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Honeywell W7750A User's Manual

1. 59 Staged Cooling Control 60 Staged Heating Control e 60 Cascade Control of Modulating Cooling Heating 61 Series 60 Modulating Control 61 Pulse Width Modulating PWM Control sss 61 Outdoor Air Lockout of Heating Cooling 61 Economizer Damper Control 61 Indoor Air Quality IAQ Override 62 Ereeze Raa 62 Discharge Air Low Limit Control 62 Economizer Enable Disable 62 Appendix C Complete List of Excel 10 W7750 Controller User Addresses 62 User Address Indexes all in alphabetical order 63 Mappable User Addresses and Table Number 64 Failure Detect User Addresses and Table Number 65 Appendix D Q7750A Excel 10 Zone Manager Point Estimating Guide 109 Approximate Memory Size Estimating Procedure 109 Appendix E Sensor Data for Calibration see 110 Resistance Sensors ccn arenam ae cda ice esce t Ed 110 Voltage Current Sensors 112 72 2958 1 2 EXCEL 10 W7750A B C CONSTANT VOLUME AHU C
2. and periodically writes the sarre value to indicate that the rranagerrert node is still logged on If there are no writes rrade to rMinUse for approximately 60 seconds then the Excel 10 resets nvilnUse to zero to autorratically log off the rranagerrent node Before interacting with any network variables the management node verifies that the rMinUse has not changed The management node logs off by writing to rMinUse During power up an application restart return to on line from off line the Excel 10 sets InUse to 65535 to indicate to the management node that it has returned to ordine E Vision Legend Monitor P Parameter S Schematic jenuey 159190 10 ees jeufa SS929y 1290 When there is an alarmreported by Alarrr amp tatus then in alarmis set to 1 TRUE else in alarrnis set to FALSE If alams reporting is suppressed via ManualMode then in alarmis set to r o 93015 NIE object id Eee 1 65535 object idis set to the current value of nviRequestobject_id UE request nvoStatus invelid FALSE If Request Object id is not a valid object invalid id is set to 1 TRUE SNVT obj request otherwise it is set to FALSE nvoStatus a 1 i FALSE If Request objectt_request is not a valid request for the object addressed SNVT obj i pee invalid request is set to 1 TRUE otherwise it is set to FALSE rvoStatus disabled The d
3. 5 au m ee Lcd et ee a ee pass 9 Table 2 List of Differences W7750A and W7750B C Controllers L 11 Table 3 Common Configuration Options Summary For W7750A B C 22 Table 4 Configuration Options Summary For W7750A B C Controllers a 23 Table 5 Modes Of Operation For The Excel 10 W7750 Controller a 27 Table 6 Application Steps o decere rte cem pete e e qoe Fecit cur yeu rere e dece egeta qu ea Peavey 29 Table 7 LONWORKS Bus Configuration Rules And Device Node 30 Table 8 VA Ratings For Transformer Sizing u u gu un manus 33 Table 9 Field Wiring Reference Table Honeywell listed as AK or 36 Table 10 W7750A Version I O Description 37 Table 11 Excel 10 W7750 Controller Ordering Information 46 Table 12 Excel AIarms iei E Een dimittit ns 49 Table 14 Common Configuration Options Summary For W7750A B C 53 Table 15 Configuration Options Summary For W7750A B C Controllers 54 Table 16 Bypass Pushbutton Operation 55 Table 17 Interstage Minimum Times tnnt ti oe ccr e ae cre Eee LE ene ne d e Pedo vo ino 60 Table 18 Exc
4. siVoltageOffsetCalS 12 0 volts 1to1 siVoltageOffsetCalS12 1 volts 1 01 FALSE TRUE RmenpCal siSpaceTenpZeroCalS7 Degrees 5to 5 310 3 B 1 8960 FanFail Time nciConfig ubFanF ail TimeSO 5 10 110 255 52 08 _ J j O E Vision Legend IM Monitor P Parameter S Schematic NOTE Physical O points that are configurable are in Table 20 Comments EconMtrTirre specifies how long it takes the econorrizer darrper rrotor to travel fromfully closed to fully open This time is used to calculate the reported position of the and to determine the length of over drive tirre required to assure the darrper is fully closed or open CoolMtrTirre specifies how long it takes the cooling danqper or valve motor to travel fromfully closed to fully open This tine is used to calculate the reported position of the cooling darrper or valve and to deterrrine the length of over drive tine required to assure that it is fully closed or open HeatiMtrTirre specifies how long it takes the heating or valve motor to travel fromfully closed to fully open This tine is used to calculate the reported position of the heating darrper or valve and to detemine the length of over drive tine required to assure that it is fully closed or open Each tine OUT is energized then the node waits for FanFail
5. Aa Ea a raa nennen as 112 Table 36 Sensor Current Versus Enthalpy volts nnne trennt serere 113 Table 37 Sensor Voltage Versus CO2 115 Table 38 Sensor Voltage Versus Input Voltage To 115 Table 39 Sensor Voltage Versus Pressure INW 116 5 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER INTRODUCTION Description of Devices The W7750 is the Constant Volume Air Handling Unit CVAHU Controller in the Excel 10 product line family The CVAHU is a LONMARK compliant device designed to control single zone and heat pump air handlers W7750 systems control the space temperature in a given zone by regulating the heating and cooling equipment in the air handler that delivers air to that space The W7750 air handler is typically an all in one constant air volume packaged unit located on the roof of the building In addition to standard heating and cooling control the W7750 provides many options and advanced system features that allow state of the art commercial building control The W7750 Controller is capable of stand alone operation however optimum functional benefits are achieved when the network communication capabilities are used The W7750 utilizes the Echelon Q7752A LONWORKS BUS SERIAL ADAPTER LonWorks network LONWoRKS Bus for communications and co
6. lelolololololelololololololololiol RETURN RA al ROOF Fa V CCo CEILING OCCUPANCY SENSOR DISCHARGE T7770 OR 7560 AIR M17488 AIR WINDOW CONTACT Fig 2 Typical W7750 control application Control Provided The W7750 Controller is designed to control a single air handler to maintain the units space temperature at the current setpoint Heating and cooling control is provided for either staged or modulating equipment Up to four stages of mechanical cooling and up to four stages of heating are allowed Modulating outputs can be either floating type such as a Series 60 control or Pulse Width Modulated PWM W7750B C only control The economizer dampers can be controlled directly with floating or PWM outputs or indirectly using a digital output as an enable disable signal to a packaged economizer controller The economizer enable function which decides when to allow outdoor air to be used for free cooling can be configured to one of ten strategies based on the inputs For more details see Appendix B Sequences of Operation When the economizer position is controlled from the W7750 the minimum position setting for ventilation requirements can be adjusted based on indoor air quality IAQ needs in the space IAQ monitoring is provided through either sensor or a digital input from a space mounted IAQ limit switch For heat pump configurations up to four comp
7. Table 27 Direct Access And Special Points Continued m Engineering Units English User Address Field Name Metric or States plus Range me kanpa dis r r 10 1216 jeubig T 23 33 33 33 9 lt o 5 x 2 TERE RB od i d 9 55900 12911 For HeatCoolStage2 refer to HeatCoolStace1 HER For HeatCoolStage3 refer to HeatCoolStage1 For HeatCoolStage4 refer to HeatCoolStage1 E Vision Legend IM Monitor P Parameter S Schematic During MANUAL mode HeatCoolStagel parameters tum the corresponding heat or cool stage to on 1 or off O When HeatCoolMode is O then cooling loads are controlled When HeatCoolMode is 1 and the node is controlling conventional equipment then heating loads are controlled When HeatCoolMode is 1 and the node is controlling a heat purrp then cooling loads are controlled AuxHeatCoolStage1 During MANUAL mode when the node is configured to control a heat purrp and HeatCoolMode is 1 these pararreters tum the corresponding auxiliary heat stage on 1 or off O AuxHeatCoolStage2 During MANUAL mode when the node is configured to control a heat purrp and HeatCoolMode is 1 these pararreters tum the corresponding auxiliary heat stage on 1 or off O AuxHeatCoolStage3 During MANUAL mode when the node is configured to control a heat purrp and HeatCoolMode is 1 these para
8. 2 ype O Oto 255 00 NamnrypeLog1 Alarm ypeLog2 AlanmTypeLog4 A supervisory node may poll the Alarrri og output for a short alarm history The last five alarmreports sent nvoAlarmare reported via og When ALARM_NOTIFY_DISABLED is entered into the log further alarms or return to norrrals not entered into the log until alanmreporting is again enabled If Alarmis bound and not being acknowledged the last alarmreport entered into AlarrrL og is the one that wes not acknowedged See Alarmand AlanyStatus for related subjects type n specifies the alarmthat wes issued via Alarm See Alarmfor the alarm types used AlarrrLog The newest alarmis reported in typelO and the oldest is reported in typel4 When a new entry is made to the log the oldest entry is lost O 91816 jo 9njeA BRE FieldNo nvoDatal and rvoCtIDataG1 are output network variables indicating the node status The infomation contained in these network variables are typically used to display the node status on an operator terrrinal used in a trend log or used in a control process The information contained in nvoCtlDataG1 and nvoDetal are identical nvoCtiDataG1 uses the SGPUC rrechanismto update the status or values The fields in nvoData are updated when network variables are polled by the receiver Then every six seconds the difference b
9. o2 3 22 2 E Engineering Units English e 9 User Address NvName Field Name Metric or States plus Range e i N Mi E Vision Legend Monitor Parameter S Schematic MaxClRamp is the rrexirmumcool recovery ranp rate in degrees F per hour This value is used to control the adaptive recovery rarrp rate during the COOL recovery period The setpoint is changed at a rate in degrees F per hour depending on the outdoor air terrperature and the MinClRarrp OdTenpMaxCiRamp and OdTerrpMinClRanqo pararreters If there is no outdoor air terrperature sensor available then MinClRarrp is used as the recovery rate Refer to the NOTE in the comments colum for MaxHtRarrp for the conditions that recovery rarrping applies to MinClRarrp is the rrininrumcool recovery ramp rate in degrees F per hour This value is used to control the adaptive recovery ranp rate during the COOL recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air terrperature and the MaxClRarrp OdTerrpMaxClRarrp and OdTenpMinClRamp pararreters If there is no outdoor air temperature sensor available then MinClRarrp is used as the recovery rate Refer to the NOTE in the contrents colum for MaxHtRarrp for the conditions that recovery ramping applies to OdrTerrpMaxClRarrp is the naxinum outdoor air terrperature pararreter that is u
10. 2 1 8 5 5 8 143 M10098B Fig 4 W7750A construction in in mm PERFORMANCE SPECIFICATIONS Power 24 Vac with a minimum of 20 Vac and a maximum of 30 Vac at either 50 or 60 Hz The W7750A power consumption is 6 VA maximum at 50 or 60 Hz The W7750B C power consumption is 12 VA maximum at 50 60 Hz The W7750A B C is a Class 2 rated device This listing imposes limits on the amount of power the product can consume or directly control to a total of 100 VA 13 Special Note for the W7750B C Unit The individual Triac outputs incorporate an internal common connection with the input power transformer The Triacs provide a switched path from the hot side R of the transformer through the load to the common of the transformer The W7750B C Controller design must use the same power transformer for any loads connected to that controller see Fig 30 Each individual Triac is rated 1 at 30 maximum Under all operating conditions the maximum load source power budget for the W7750B C Controller is 100 VA Actual allowable Triac current is 500 mA MAX 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Al 4 20yi OUT 12 13 6854 Fig 5 Excel 10 W7750B Constant Volume AHU Controller CPU Motorola or Toshiba 3150 Neuron processor containing three eight bit CPUs Each Neuron has a unique 48 bit network identification number Memo
11. 25 M 38 28 Typical W7750A Controller with separate transformer application wiring diagram For more information on note 2 refer to Fig 25 eee nennen nnne ns 38 29 W7750A Controller floating economizer damper wiring diagram For more information on note 2 refer to Fig 25 39 30 Typical W7750B Controller with staged heating and cooling wiring diagram For more information on note 2 refer to Fig DD ALI uu nt O katu E A m qk asna asi 40 31 W7750B Controller with floating heating cooling and economizer wiring diagram For more information on note 2 refer KO mO PRA Apc 40 32 W7750B C Controller PWM damper actuator wiring diagram For more information on note 2 refer to 25 e HR E 41 33 W7750B C wiring diagram with 4 to 20 mA enthalpy sensors and digital inputs For more information on note 2 refer to zu EE 41 34 W7750B C wiring diagram with C7600C 4 to 20 mA solid state humidity sensor For more information on note 2 refer to Esel et itin esee esp Ere ee aap nba 42 35 W7750C Controller with 4 to 20 mA heating cooling and economizer wiring diagram AOs must use terminals 16 17 or 18 The AOs can be set to be reverse acting For more information on note 2 refer to Fig 25 42 36 Pneumatic transduce
12. 91215 JO Jo 91215 z ST NUL 5 ST NUL 5 SI INVALID SI INVALID E Vision Legend M Monitor P Parameter S Schematic NetManOcc NetManOcc reports the network manual occupancy state from The valid enurrerated states OCCUPIED indicates occupied OC_UNOCCUPIED indicates not occupied OC_BYPASS indicates that the space is bypass occupied for ndAW2SetPt uiBypass Time seconds after nviManOcc is first set to OC BYPASS OC STANDBY indicates that the space is standby OC_NUL means that no manual override is active SenOcc SenOcc indicates the current state of the sensed occupancy and is calculated frommuviSensorOcc and the local occupancy sensor nvolO OccupancySensor The local sensor and are ORed together If either the local sensor riSensorOcc shows occupancy then SenOcc shows occupancy The enurrerated values are OC OCCUPIED means that occupancy is sensed by one or more sensor OC_UNOCCUPIED rreans that no occupancy is sensed by any sensors OC_NUL means no local sensor is configured and miSensorOcc has failed to be received periodically bound or not bound EconEnable EconEnable indicates the current suitability of outdoor air for use in cooling used by the control process EconEnable is periodically calculated either fromthe sensor s specified by nciConfig EconEnable or fromrMEcon Whe
13. 91615 10 enjeA Jo 94215 gt NORMAL EMERG NORMAL M gt PRESSURIZE gt DEPRESSURIZE gt PURGE SHUTDOWN NUL alarm bit O Byte Offset O Bit Offset O InputNVFailAlm alarm bit O Byte Offset O Bit Offset 1 NodeDisableAlmn EMERG EMERG EMERG EMERG EMERG EMERG The NodeType is nurreric identifier that is stored in EPROM that identifies O the Excel 10 node type Whenever a new software version or upgrade is M issued this is reflected in nroPgnWVer which typically is read by a network rranagerrert node to identify the node type The contents of nroPgnver contain corrpatible mode type information and is fixed at the time when the node softwere is compiled Errerg is an errergency output reflecting the state of the locally wired smoke detector If Energ is EMERG NORMAL then no smoke is being detected by the local sensor or that the smoke detector input not configured If Energ is EMERG PURGE the locally wired smoke sensor is indicating smoke condition EMERG PRESSURIZE EMERG DEPRESSURIZE and EMERG SHUTDOWN are not supported by Errerg If Energ is not configured then it is set to EMERG NUL subnet is the LONWORKS subnet number in domain entry 1 of the nodes domain table to which the node is assigned so Oto 255 type is the alarmtype being issued When an alarmcondition is no longer TRUE type is set to the sumof the alarmcorxitiors nurreric value and the RE
14. E Vision Legend Monitor P Parameter S Schematic 9101540 n A 10 ees The electrical fault field is not supported and is set to O FALSE The unable to rreasure field is not supported and is setto O FALSE The conm failure field is not supported and is set to FALSE D 5 5 5 e fail self test FALSE The fail self test field is not supported and is setto O FALSE CT _ obj request self test in progress FALSE The self test in progress field is not supported and is setto O FALSE END _ obj request nvoStatus locked out FALSE The locked out field is not supported and is set to FALSE hm obj request Ev c l control rranual control field is not supported and is setto O FALSE LE wae Be in alarm He there are currently any active alarrrs reported by SrcUnitStatus in alam obj request 1 or SrcUnitStatus in alarmis set to ALARM NOTIFY DISABLED n alarm is setto 1 TRUE otherwise in_alarmis set to FALSE When Request object_request is RO REPORT then disabled and alarmare set to 1 TRUE to indicate that these functions are supported while all other fields are set to FALSE ERN IG override FALSE override field is not supported and is set to FALSE ns DestOccSensor rMiSensorOcc OC OCCUPIED OC NUL MIX x x X allows an occupanc
15. 8960 L Table 20 Input Output Points Continued Engineering Units English User Address Field Name Metric or States plus Range rciloSelect COOL STAGE 1 NETWORK DO FREE1 x COOL STAGE 2 Value cf State is 25 COOL STAGE 3 COOL STAGE 4 HEAT STAGE 1 HEAT STAGE 2 HEAT STAGE 3 HEAT STAGE 4 CHANGE OVER RELAY FAN OUT AUX OCCUPANCY STATUS ECON OPEN ECON CLOSE COOL OPEN COOL CLOSE HEAT OPEN HEAT CLOSE HEAT COOL STAGE 1 HEAT COOL STAGE 2 HEAT COOL STAGE 3 HEAT COOL STAGE 4 FREE1 FREE2 FREE1 PULSE ON FREE1 PULSE OFF ECON PWM HEAT PWM COOL PWM UNUSED DigitalOut 1 See DigitalOut O enurrerated 1 31 FAN OUT x See DigitalOut O for erurrerated nanes The VV7750 Controllers are values 255 value of State is 10 configured at the factory with the enumerated value in the Default colurm DigitalOut 2 See DigitalOut O enurrerated 1 31 COOL STAGE 2 See DigitalOut O for enurrerated nanes The VV7750 Controllers are values 255 Value of State is 2 configured at the factory with the enumerated value in the Default colurm DigitalOut 3 See DigitalOut O enurrerated 1 31 HEAT STAGE 1 See DigitalOut O for enurrerated nanes The VV7750 Controllers are values 255 Value of State is 1 configured at the factory with the enumerated value in the Default colurm DigitalOut 4 p VLA enurrerated 1 31 HEAT ST
16. Fig 59 shows the graph of these points SENSOR CURRENT VERSUS ENTHALPY VOLTS Table 36 Sensor Current Versus Enthalpy volts EEE 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 00 11607 Fig 59 Graph of Sensor Current versus Enthalpy volts See Fig 60 for partial psychometric chart for a C7400A Solid State Enthalpy Sensor 113 74 2958 1 M11605 C EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER M11160 C7400A OUTPUT CURRENT Sara ATQ MD 7 E e SLE A SS PNT G 8 X N X F 55 60 13 APPROXIMATE BULB HIGH LIMIT CURVE FOR W6210D W7210D l z Q URVE CONTROL P A Fig 60 Partial psychometric chart for a C7400A Solid State Enthalpy Sensor See Fig 61 for a C7400A Solid State Enthalpy Sensor output current vs relative humidity TEMPERATURE F Fig 61 C7400A Solid State Enthalpy Sensor output current vs relative humidity T7242 or equivalent 114 Sensor Type 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Sensor Use CO concentration Table 37 lists the points for Sensor Voltage versus CO concentration Fig 62 shows the graph of these points Table 37 Sensor Voltage Versus CO Concentration CO
17. control is available on the W7750B C only A discharge air temperature sensor is required for modulating economizer damper control Enable disable control is provided to emulate the Honeywell T7300 thermostat economizer operation where a DO tracks the occupancy status of the controller An external packaged economizer control then modulates the dampers For modulating control the economizer is enabled or disabled based on one of ten available strategies see Appendix B Sequences Operation Economizer Enable Disable Control section for further details Fig 16 illustrates a system with modulating economizer dampers see Fig 29 31 32 and 35 in Step 4 Prepare Wiring Diagrams section for wiring details COOL HEAT COIL COIL DISCHARGE AIR TEMPERATURE SENSOR REQUIRED FOR ECONOMIZER CONTROL T7560A B OR T7770 n lolololo M17494 Fig 16 Economizer control PNEUMATIC ACTUATOR CONTROL The W7750B C Controller can control pneumatic actuators for any or all of the three modulating outputs provided by the control algorithm heat cool and economizer Control of pneumatic water steam valves and damper actuators is provided through a transducer device using either Series 60 Floating Control or PWM DOs A floating to pneumatic or a PWM to pneumatic transducer is required for each output signal The W7750A Controller can drive Series 60 Floating 25 Control to modulate cooling valves heat
18. 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER EATER HEAT TWO THREE WAY TWO OR THREE WAY 2 COOL COOL COOL COOL STAGE STAGE CHILLER WATER VALVE HOT WATER STEAM VALVE DAMPER FAN 4 STAGE3 STAGE2 STAGE 1 Ba if IS SERIES 60 SERIES 60 VALVE ACTUATOR VALVE ACTUATOR STEM SON STEM Md SERIES 60 UP ACTUATOR f T e o lt gt x A TRIAC EQUIVALENT CIRCUIT W7750B CONSTANT VOLUME AHU CONTROLLER TRIAC EQUIVALENT CIRCUIT W7750B CONSTANT VOLUME AHU CONTROLLER WALL MODULE WALL MODULE LONWORKS 0 VDC OUT BUS lt Ls lt lt gt N Ls AI 3 IF GROUND Al 4 V mA LONWORKS A 8 5 m 9 A L ILA DISCHARGE gt 31211 AIR 5 EIBEEEBSBH FOR ERES 819 olo LONWORKS BUS E E EEE NETWORK ACCESS 11111 A 7 6 5 4 3 2 1 7770 JACK FOR 9 a LoNWonks BUS WALL NETWORK 5 MODULE ACCESS A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM T7770C USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 O 2 WITH A MINIMUM OF 18 AWG 1 O 2 FOR EARTH GROUND WIRE WALL A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED MODULE TOGETHER BEFORE INSERTI
19. 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER HEAT PUMP SETPOINT FOR COMPRESSORS OCC setpoint AUX HEAT SETPOINT UN OCC setpoint OR STANDBY setpoint 4 RECOVERY TIME OCCUPIED TIME M10110 Fig 47 Setpoint ramping parameters with setpoint calculation During the COOL recovery period the setpoint changes at a rate in degrees per hour relative to the outdoor air temperature If there is no outdoor air temperature sensor available the MinClRamp is used as the recovery rate See Fig 48 for the various setpoints COOL RECOVERY RAMP RATE DEGREES HOUR MinCIRam OUTDOOR AIR TEMPERATURE OaTempMinCIRa OaTempMaxCIRam M10111 Fig 48 Setpoint ramping parameters with ramp rate calculation NOTES The setpoint used during the COOL recovery period is similar to the heat mode in Fig 46 except the slope of the line reverses for cooling Recovery ramping applies between scheduled heat ing or cooling setpoint changes from UNOCCUPIED to STANDBY UNOCCUPIED to OCCUPIED and STANDBY to OCCUPIED Scheduled setpoint changes from OCCUPIED to UNOCCUPIED or OCCUPIED to STANDBY do not use a ramped set point but instead use a step change in setpoint Recovery ramps begin before the next scheduled occupancy time and are ramped from the setpoint for the existing scheduled occupancy state to the set point for the next occupancy state FAN OPERATION The W7750 s
20. Also when a wall rrodule setpoint pot is configured this value serves as the upper lirrit on the user adjustable rerrote setpoint pot wall module Degrees F 5010 95 Degrees C 10 to 35 When the controller is in the Unoccupied mode the unit responds to a call for cooling based on the Cooling Unoccupied Setpoint When the controller is in the Occupied mode if the space terrperatu re drops below the Heating Occupied Setpoint the unit switches to the Heating mode This Setpoint is used only when there is no wall module setpoint pot configured Overridden nviSetPt Used to corrp te ZEB 19 gt IE LN HE LM When the controller is in the Standby mode typically an occupancy sensor the base Heating Setpoint is deterrrined by the Heating Standby Setpoint value Also when wall rrodule setpoint pot is configured this value serves as the lower limit on the user adjustable remote setpoint pot wall module m o Degrees F 50to 95 Degrees C 1010 35 When the controller is in the Unoccupied mode the unit responds to a call for heating based on the Heating Unoccupied Setpoint Request provides the nrechanismto request a particular status report Status for a particular object within this node Object id selects the object being referenced by miRequest The only valid value of object id is 1 for the object all ot
21. Concentration PPM Sensor Voltage 300 1 50 400 sss 127 SSH VOLTS 0 os Mor 4 1200 1400 1600 1800 2000 ne M11611 1300 1500 1700 1900 Fig 62 Graph of Sensor Voltage versus CO concentration Sensor Type Third party 2 to 10V Sensor Use Monitor voltage 115 Table 38 lists the points for Sensor Voltage versus input Voltage to A D Fig 63 shows the graph of these points Table 38 Sensor Voltage Versus Input Voltage To A D 99 2 00 1 00 0 0 100 200 300 400 500 600 700 800 900 1000 VOLTS M11612 Fig 63 Graph of Sensor Voltage versus input Voltage to A D Sensor Type Third party Sensor Use Sensor Voltage Vdc Pressure Inw 2 to 10V 0 to 5 inw 1 25 kPa Table 39 lists the points for Sensor Voltage Vdc versus Pressure Inw Fig 64 shows the graph of these points 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 39 Sensor Voltage Vdc Versus Pressure Inw 150 037 5 00 1 25 10 00 Home and Building Control Honeywell Inc Home and Building Control 155 Gordon Baker Road North York Ontario M2H 3N7 Honeywell Plaza P O Box 524 Minneapolis MN 55408 0524 Printed in 74 2958 1 J D Rev 3 00 Honeywell Limited Honeywell Limit e paper containing at least 1096 post consumer paper fibers
22. OC UNOCCUPIED and O rrears off OC UNOCCUPIED SaFan rvoDatal MN FALSE FanOn FanOn indicates the state of the FAN OUT digital output 1 means rvoCtiDataG1 on and O nears off StatusEconOut mvoDatal AuxtconOut AuxEconOut AuxEconOut indicates the state of the AUX ECON nvoCtDataG1 digital output 1 means that the packaged economizer is enabled and means the economizer is disabled A packaged economizer is always treated as the first stage of cooling when an economizer is configured by nciloSelect nvoDatal EconFloatSynch ALSE EconFloatSynch EconFloatSynch indicates that the econorrizer darrper nvoCtDataG1 age notor is being synchronized with the reported economizer position by driving the darrper for a period longer than it takes to fully dase the damper The reported econorrizer position is synchronized whenever an endpoint is reached full open or full dose and when the elapsed time since the last synchronization is 24 hours DicShed mvoDatal DicShed FALSE DicShed DicShed indicates the state of nviDIcShed When DicShed is 1 rwoCtiDataG1 TRUE demand limit control set by an energy management node is active If the effective occupancy is OCCUPIED or OC STANDBY when derrand lirrit control is active then the setpoint is shifted by ncAuxlSetPtsiDlcBurrpTerrpS7 in the energy saving direction When DicShed is demand limit control is inactive If nviDIcShed fails to be received periodically or becorres
23. OUT 5 DO5 HEAT_STAGE_2 Ifthe W7750A controller is configured by E Vision the outputs may be assigned in different order than the factory defaults Use the Custom Wiring function OUT 6 DO6 HEAT_STAGE_1 DO7 UNUSED DO8 UNUSED of E Vision to re assign the outputs to the desired terminals The Wall Module terminals are identical for the W7750A B C Models The W7750B C Versions are preconfigured with the same factory default setup as the W7750A Model however some terminals for wiring connections differ on the W7750B C Models See Fig 30 for the terminal names on the W7750B Model and Fig 35 for the terminal names on the W7750C Model The factory default configuration of the digital output points on the W7750B C Models follow terminal names are from the 7750 FACTORY DEFAULT DIGITAL OUTPUTS FREE 1 OUT 1 DO1 NETWORK DO OUT 2 DO2 SUPPLY FAN START STOP OUT 3 DO3 COOL STAGE 2 OUT 4 DO4 COOL STAGE 1 37 The W7750B C Models offers two voltage current sensor input terminals When current type sensors 4 to 20 mA are configured the W7750B C automatically switches a 249 ohm resistor into the sensing circuit so no external resistor is required The W7750A Model does not support voltage or current inputs NOTE If using factory defaults DI 2 input is configured for ScheduleMaster nvolO SchedMaster For a stand alone unit either connect an external time clock to terminals 9 and 10 or put a jumper
24. Space temperature has fallen below the current heating setpoint or the mode network input DestHvacMode is HEAT EMERGENCY Compressors are disabled and only The network input DestManHvacMode is EMERG HEAT HEAT Auxiliary Heat stages are allowed to operate OFF MODE The heat cool control is turned off Network input DestManMode containing AHU operational mode immediately The node is not running its information from C Bus has value of MORNING WARM UP normal temperature control DISABLED The heat cool control and frost MODE protection are turned off immediately The node is not running its normal temperature control SMOKE The node has entered a smoke Network input DestEmergCmd containing smoke control signal from EMERGENCY The fan and dampers another LONWORKS Bus device has value of SMOKE EMERG then set to the conditions configured by SmkCtlMode The control remains in SMOKE EMERGENCY until power is cycled or the node receives DestEmergCmd set to EMERG NORMAL FREEZE The temperature control is set to HEAT The Window digital input detects an open window PROTECT with the setpoint set to the frost limit setpoint 46 4 F 8 C MANUAL The physical outputs are being Typically this is done by the user through E Vision or XBS by setting POSITION controlled manually The temperature the point DestManMode to MANUAL mode control loop is turned off FAN ONLY Control algorithm is disabled except The space temper
25. models are summarized in Table 2 The I O points in Table 2 are the free points that are not reserved for Wall Module use Table 2 List of Differences in W7750A and W7750B C Controllers W7750A Model W7750B C Models Digital Outputs Six Relay Outputs Eight Triac Outputs Digital Inputs Two Four Wall Module One One Analog Outputs None Three 4 to 20 mA Outputs W7750C only Analog Inputs One Resistive Input Only Four Two Resistive and two Voltage Current Inputs DC Power None 20 Vdc available to power optional sensors Floating Series 60 Control Economizer Only Heating Cooling and or Economizer PWM Control None Heating Cooling and or Economizer The T7770 or the T7560 Wall Modules includes I O points for two analog inputs for the space temperature and the setpoint knob a digital input for the Bypass pushbutton and a digital output for the LED Bypass Indicator These W7750 I O points are configurable but are normally used for the Wall Module 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER W7750A 23 22 21 20 5 Rh VA C NOT NOT NO com USED Use usep UNS USED Li J H L Fig 3 Excel 10 W7750A Constant Volume AHU Controller 74 2958 1 12 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER j blll
26. sensor value received via the LONWORKS Bus Wall Module Type Sensor only All wall modules have a LONWORKS Bus access jack except T7560A B Sensor and Setpoint adjust Sensor Setpoint adjust and Bypass Sensor and Bypass Smoke Emergency Initiation None Physically Connected Contacts closed equals smoke detected Nj 5 WIN POT A Nj AH Network Emergency Normal signal received via the LONWORKS Bus 74 2958 1 22 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 4 Configuration Options Summary For W7750A B C Controllers Possible Configurations for the Option W7750A Model Possible Configurations for the W7750B C Models Type of 1 One stage 1 One stage Heating 2 Two stages 2 Two stages 3 Three stages 3 Three stages 4 Four stages 4 Four stages 5 None 5 Series 60 Modulating electric valve or pneumatic via transducer 6 Pulse Width Modulating electric valve or pneumatic via transducer 7 None Type of 1 One stage 1 One stage Cooling 2 Two stages 2 Two stages 3 Three stages 3 Three stages 4 Four stages 4 Four stages 5 None 5 Series 60 Modulating electric valve or pneumatic via transducer 6 Pulse Width Modulating electric valve or pneumatic via transducer 7 None Type of 1 Digital Output
27. 10 FTT Termination module placement and wiring options see Fig 39 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER W7750B W7750B W7750B PART NO 209541B TERMINATION MODULE TERMINATION MODULE M10519A Fig 38 Typical doubly terminated daisy chain LONWoRKS Bus segment termination module wiring diagram 74 2958 1 44 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER SINGLY TERMINATED SEGMENT TERMINAL BLOCK FOR Q7750A ZONE MANAGER FIELD INSTALLED INTERNAL JUMPER wonk 1 Ts USE FOR DOUBLY L TERMINATED EE DAISY CHAIN INTERNAL 7p SEGMENT TERMINATION E NETWORK FIELD INSTALLED JUMPER A Enabling Internal Termination Network using jumpers in the Q7750A Zone Manager LONWORKS BUS TERMINATION MODULE INSERT INTO TERMINALS 1 AND 2 WITH THE LonWorks BUS WIRE TERMINATION MODULE IS PHYSICALLY LOCATED BEHIND THE T7770 INSIDE THE 2 X 4 OR 60 MM BOX LonWorks Bus Termination Module installed at 2 x 4 or 60 mm box mounted T7770 PART NO 209541B TERMINATION MODULE LONWORKS BUS E Installing LonWorks Bus Termination Module at W7751H terminals 11 and 12 PART NO 209541B TERMINATION MODULE LONWORKS BUS B Installing LonWorks Bus Termination Module at W7750 SEGMENTS SWITCHES ON SIDE UNDER Q7740
28. 15 Configuration Options Summary For W7750A B C Controllers Possible Configurations for the Option W7750A Model Possible Configurations for the W7750B C Models Type of 1 One stage 1 One stage Heating 2 Two stages 2 Two stages 3 Three stages 3 Three stages 4 Four stages 4 Four stages 5 None 5 Series 60 Modulating electric valve or pneumatic via transducer 6 Pulse Width Modulating electric valve or pneumatic via transducer 7 None Type of 1 One stage 1 One stage Cooling 2 Two stages 2 Two stages 3 Three stages 3 Three stages 4 Four stages 4 Four stages 5 None 5 Series 60 Modulating electric valve or pneumatic via transducer 6 Pulse Width Modulating electric valve or pneumatic via transducer 7 None Type of 1 Digital Output Enable Disable 1 Digital Output Enable Disable signal for controlling an external Economizer signal for controlling an external economizer package economizer package 2 Series 60 Modulating electric 2 Series 60 Modulating electric damper motor or pneumatic via damper motor or pneumatic via transducer transducer 3 None 3 Pulse Width Modulating electric damper motor or pneumatic via transducer 4 None IAQ Option 1 None 1 None 2 Local IAQ Digital Input directly 2 Local IAQ Digital Input directly wired to the controller Contacts wired to the controller Contacts closed means poor IA
29. AHU CONTROLLER LONWORKS BUS SEGMENT NUMBER 1 T7770 EXCEL 10 EXCEL 10 EXCEL 10 VAV o B CVAHU CVAHU LONWORKS BUS d 2095418 2095418 ACCESS TERMINATION TERMINATION MODULE MODULE LONWORKS BUS SEGMENT NUMBER 2 EX o Vex O Q7751A LONWORKS BUS ROUTER EXCEL 10 L Q7750A ZONE MANAGER TO C BUS SEE FIG 1 LONWORKS BUS SEGMENT NUMBER 2 7560 CVAHU M17497 Fig 20 Wiring layout for two singly terminated LoNWonks Bus segments NOTE See the LonWorks Bus Termination Module section for wiring details IMPORTANT Notes on communications wiring All field wiring must conform to local codes and ordi nances or as specified on installation wiring dia grams Approved cable types for LONWoRks Bus communi cations wiring is Level IV 22 AWG 0 34 ple num or non plenum rated unshielded twisted pair solid conductor wire For nonplenum areas use Level IV 22 AWG 0 34 mm such as U S part AK3781 one pair or U S part AK3782 two pair In plenum areas use plenum rated Level IV 22 AWG 0 34 mn such as U S part AK3791 one pair or U S part AK3792 two pair See Tables 9 and 11 for part numbers Contact Echelon Corp Technical Sup port for the recommended vendors of Echelon approved cables Unswitched 24 Vac power wiring can be run in the same conduit as the LONWoRks Bus cable 74 2958 1 32 Do not u
30. Bus termination refer to the LONWORKS Bus Wiring Guidelines form 74 2865 or see Application Step 3 Lay Out Communications and Power Wiring and the LONWORKS Bus Termination Module subsection in Application Step 4 Step 3 Lay Out Communications and Power Wiring LonWorks Bus Layout The communications bus LONWoRKS Bus is a 78 kilobits per second kbps serial link that uses transformer isolation and differential Manchester encoding Approved cable types for LONWoRKS Bus communications wiring is Level 22 AWG 0 34 mm plenum or non plenum rated unshielded twisted 74 2958 1 30 pair solid conductor wire For nonplenum areas use Level IV 22 AWG 0 325 mm such as U S part AK3781 one pair or U S part AK3782 two pair In plenum areas use plenum rated Level IV 22 AWG 0 325 mm such as U S part AK3791 one pair or U S part AK3792 two pair See Tables 9 and 11 for part numbers Contact Echelon Corp Technical Support for the recommended vendors of Echelon approved cables The FTT communications bus LONWORKS Bus supports a polarity insensitive free topology wiring scheme that supports T tap star loop and mixed bus wiring LONWORKS Bus networks can be configured in a variety of ways so refer to the LONWORKS Bus Wiring Guidelines form 74 2865 for complete description of network topology rules and Table 7 Fig 19 and 20 depict two typical LONWORKS Bus network topologies One has only one doubly terminated
31. DestManMode No more alarms are reported until DestManMode turns on alarm reporting or on application restart NO ALARM 0 No alarms presently detected INPUT NV FAILURE 1 One or more NV inputs have failed in receiving an update within their specified FAILURE DETECT TIME NODE DISABLED 2 The control algorithm has stopped because the controller is in DISABLED MODE MANUAL or FACTORY TEST mode No more alarms are reported when the controller is in the DISABLED MODE Alarms continue to be reported if the controller is in the MANUAL or FACTORY TEST mode SENSOR FAILURE 3 One or more sensors have failed FROST PROTECTION ALARM 4 The space temperature is below the frost alarm limit 42 8 F 6 C when the mode is FREEZE PROTECT The alarm condition remains until the temperature exceeds the alarm limit plus hysterisis INVALID SET POINT 5 One of the setpoints is not in the valid range 49 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 12 Excel 10 Alarms Continued Alarm type Name of alarm or error bit number LOSS OF AIR FLOW 6 Meaning of alarm code or error bit The Fan Status DI indicates that there is no air flow when the node is commanding the fan to run The control is shut down and disabled until power is cycled or the node is reset See NOTE below The alarm is not issued until FanFailTime seconds have elapsed since the loss of flow condition was first reported DIRTY FIL
32. EffectOcc OC OCCUPIED EffectOcc Result of controller supervising the various Occupied controlling rwoCtiDataG1 OC UNOCCUPIED inputs and deciding which one to use See StatusinOcy DestSchedOcc OC BYPASS ManualOcc and StatusOwd OC STANDBY OC NUL StatusoOwd mvoDetal Ovenide OC_OCCUPIE Overridk Is the effective manual override state arbitrated fromNetManOcc rwoCtiDataG1 DOC UNOCCUPIED the wall module override button and the Bypass Timer OC BYPASS S OC STANDBY OC NUL 1 SchedOcc StatusSched nvoData OC_OCCUPIED DestSchedOcc DestSchedOcc is calculated frormOccTirreClock and nwoCtiDataG1 OC UNOCCUPIED rM vent CurrertState using the following logic If OC BYPASS nvi TodEvent CurrertState is OCCUPIED and OccTirreClock is OC STANDBY ST NUL then DestSchedOcc is OCCUPIED If OC NUL nv TodEvent CurrertState is UNOCCUPIED and OccTirreClock is ST then DestSchedOcc is UNOCCUPIED If rM TodEvert CurentState is STANDBY and OccTineClock is ST then DestSchedOcc is STANDBY If nv TodEvent CurrertState is don t care and is ST then DestSchedOcc is OCCUPIED If nviTodEvent CurrentState is don t care and OccTirreClock is ST OFF then DestSchedOcc is OC UNOCCUPIED OC OCCUPIED rreans the space is scheduled to be occupied UNOCCUPIED rreans the space is scheduled to be unoccupied STANDBY rreans the space is scheduled to be ina Standby state some
33. For outdoor and return air humidity C7600C1008 Solid State Humidity Sensor 4 to 20 mA For outdoor and return air humidity C7600C1018 Solid State Humidity Sensor 2 to 10 V For outdoor and return air humidity MMC325 010 MMC325 020 Accessories Pneumatic Retrofit Transducers Select pressure range 010 0 to 10 psi 68 97 kPa or 020 0 to 20 psi 137 93 kPa Use to control Pneumatic reheat valves MMCA530 DIN rail adapter for MMC325 Transducers MMCA540 Metal enclosure for MMC325 Transducers mE ML7984B3000 Valve Actuator Pulse Width Modulation PWM Use with V5011 or V5013 F and G Valves ML6161B1000 Damper Actuator Series 60 M6410A Valve Actuator Series 60 Use with V5852 V5853 V5862 V5863 Valves ML684A1025 Versadrive Valve Actuator with linkage Series Use with V5011 and V5013 Valves 60 47 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 11 Excel 10 W7750 Controller Ordering Information Continued Part Number Product Description Comments ML6464A1009 Direct Coupled Actuator 66 Ib in torque Series 60 ML6474A1008 Direct Coupled Actuator 132 Ib in torque Series 60 ML6185A1000 Direct Coupled Actuator 50 Ib in spring return Series 60 V5852A V5862A Two way terminal unit water valve 0 19 0 29 Use with M6410 Valve Actuator Close off rating 0 47 0 74 1 2 and 1 9 1 2 npt 13 mm for 0 19 to 1 9 is
34. LONWORKS Bus segment that has 60 nodes or less and one showing two singly terminated LONWORKS Bus segments that has 120 nodes or less 60 MAX per each segment The bus configuration is set up using the Network Manager tool from within CARE see the CARE Excel 10 Zone Manager User s Guide form 74 1392 NOTE For wiring details see the LONWORKS Bus Termination Module subsection in Step 4 For wall module wiring U S part AK3782 non plenum or U S part AK3792 plenum can be used For a LONWORKS Bus that is doubly terminated daisy chain these cables contain two twisted pairs one for the run down to the wall module and one for the run back up to the controller for ease of installation EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER EXCEL 10 CVAHU T7770 209541B TERMINATION MODULES AT ENDS OF LONWORKS BUS LONWORKS BUS 5 DAISY CHAIN EXCEL 10 CVAHU 5 EXCEL 10 m EI EXCEL 10 EXCEL 10 Q7750A ZONE CVAHU MANAGER T7770s WITH UP TO 60 NO TOTAL NODES LONWORKS BUS TO C BUS LONWORKS BUS ACCESS SEEFIG 1 ___ E EXCEL 10 mE CVAHU 17770 T7770 Xe JACK FOR OPERATOR TERMINAL LONWORKS BUS CONNECTIONS M17496 T7770 OR 7560 Fig 19 Wiring layout for doubly terminated daisy chain LONWoRKS Bus segment 31 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME
35. O alarm bit O Byte Offset O Bit Offset 4 InvelidSe PtAlny alarm bit O Byte Offset O Bit Offset 6 DirtyFilterAlm H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8 8960 L Table 23 Status Points Continued m Engineering Units English E User Address Field Name Metric or States plus Range NO ALARM INPUT NV FAILURE NODE DISABLED SENSOR FAILURE FROST PROTECTION INVALID SET POINT LOSS OF AIR FLOW DIRTY FILTER SMOKE ALARM IAQ OVERRIDE LOW LIM ECON CLOSE NV FAILURE rNODE DISABLED ISENSOR FAILURE rFROST PROTECTION HNVALID SET POINT rLOSS OF AIR FLOW rDIRTY FILTER rSMOKE ALARM OVERRIDE rLOW ECON CLOSE ALARM NOTIFY DISABLED rwoDatal FieldNo UPDATE ALL FIELDS UPDATE ALL FIELDS nvoCtiDataG1 MODE FIELD EFFECT OCC FIELD OVERRIDE FIELD SCHED OCC FIELD OCC TIME CLOCK FIELD NET MAN OCC FIELD SEN OCC FIELD ECON ENABLE FIELD PROOF AIR FLOW FIELD CALC OD ENTHALPY FIELD CALC RA ENTHALPY FIELD HEAT STAGES ON FIELD COOL STAGES ON FIELD FREE1 OUT FIELD FREE2 OUT FIELD OCC STATUS OUT FIELD FAN ON FIELD AUX ECON OUT FIELD ECON FLOAT SYNCH FIELD DLC SHED FIELD IAQ FIELD SMOKE MONITOR FIELD WNDOW OPEN FIELD DIRTY FILTER FIELD SHUTDOWN FIELD MON SWTCH FIELD WSHP ENABLE FIELD UPDATE NO FIELDS E Vision Legend M Monitor P Parameter S Schematic Jo 9jejs
36. OCCUPIED OC UNOCCUPIED OC BYPASS OC STANDBY OC NUL SW OFF SW ON SW NUL Oto 100 SW OFF SW ON SW NUL b v OC OCCUPIED M X X X CurrentState indicates the current scheduled occupancy state to the node CurrentState is used along with other occupancy inputs to calculate the effective occupancy of the node The valid states and meaning are as follows OCCUPIED rreans the energy rranagerrert systemis specifying occupied UNOCCUPIED means the energy rranagerrent Systemis specifying that the space is presently unoccupied BYPASS States that the energy rranagerrert systemis in bypass STANDBY states that the energy managerrert system has the space presently is between occupied and unoccupied states that no occupancy State has been specified OC OCCUPIED NextState indicates the next scheduled occupancy state to the node This information is required by the Excel 10 to performthe optimumstart strategy The space expected effective occupancy will be NextState in UTineToNextState minutes The valid states and meaning are the sarre as for CurrentState p is the in minutes until the next change of scheduled Wa Bypass value The bypass state of one node may be shared with the bypass State of another node using nviBypass and nvoBypass This allows a wall module at one node to be used to over ride the scheduled occupancy of another node The node with Bypass bound norrrally does not have a wall nodu
37. OccStatOut 86 RaEnth 89 RaEnthCalc 85 89 RaTemp 89 RmTemp 88 RmTempActSpt 88 86 SaFanStatus 85 ShutDown 87 SrcEmerg 81 SrcTimeCIk 80 StatFreezeStat 87 StatusAImTyp 81 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER StatusEconEn 85 StatusEconOut 86 StatusError 90 StatusFilter 87 StatuslaqOvr 87 StatusManOcc 85 StatusMode 84 StatusOcc 84 StatusOcySen 85 StatusOvrd 84 StatusSched 84 StatusSmoke 87 StatusWndw 87 TimeClckOcc 84 WSHPEnable 88 Table 24 Calibration Points Page 93 Table 25 Configuration Parameters Address Page 96 CoolCycHr 94 CoolMtrSpd 95 DisMinClTime 96 DisMinHtTime 96 EconMode 94 EconMtrSpd 95 FanFailTime 95 FanMode 94 FanOnHtMode 95 FanRunOnCool 94 FanRunOnHeat 94 HeatCycHr 94 HeatMtrSpd 95 laqUseHeat 96 OvrdPriority 97 OvrdType 97 RmTempCal 95 SetPtKnob 97 SmkCtlMode 94 TempOffstCal1 95 TempOffstCal2 95 UseRaTempCtl 96 UseWallModStpt 97 VoltOffstCal1 95 VoltOffstCal2 95 Table 26 LoNMARK Open System Points Address Page CoolOccSpt 98 CoolUnoccSpt 98 CoolStbySpt 98 DestEconEnable 104 DestEmergCmd 101 DestHvacMode 99 DestManOcc 99 DestOaHum 100 DestOaTemp 100 DestOccSensor 103 DestRmTemp 100 DestRmTempSpt 99 DestSptOffset 99 DestWndw 104 HeatOccSpt 98 HeatStbySpt 98 74 2958 1 64 HeatUnoccSpt 98 SrcEconEnable 105 SrcEconEnCt 105 SrcOaHum 100 SrcOaTemp 100 SrcOccSensor 103 SrcRmTemp 100 SrcRmTem
38. Qs os 1 2 B 4 5 6 7 8 9 255 1 2 255 AUTO OC NUL SI INVALID SI INVALID x OX HOME is an input that coordinates the roof top unit controller operation with other controllers HVAC NIGHT PURGE HVAC PRE COOL MRNG WRMUP TEST not supported and will default to the HVAC AUTO setting if received ManOcc is an input froma network connected operator interface or other node that indicates the state of a manual occupancy control thus over riding the scheduled occupancy state ManOcc is used along with other occupancy inputs to calculate the effective occupancy of the node See the Data EffectOcc and Data1 NetiVianOcc for more details The valid enurrerated values have the following meanings OC OCCUPIED indicates occupied UNOCCUPIED indicates not occupied OC BYPASS indicates thatthe space is occupied for Aw2SetPt Bypass Tire seconds after ManOcc is first set to BYPASS The timing is done by the bypass tirrer in this node If ManOcc changes to another value the tirrer is stopped OC STANDBY indicates that the space is in standby mode OC_NUL and all unspecified values means that no manual occupancy control is requested Vhen ManOcc changes from OC OCCUPIED OC UNOCCUPIED OC BYPASS or OC STANDBY to OC any bypass condition is canceled SetPoint is an input network variable used to detemine the terrperature control point o
39. Temperature Sensor Type T7770A B C D the T7560A B and C7770A Sensor Use Space Temperature and Discharge Return Air Temperature Table 31 lists the points for Sensor Resistance versus Temperature Fig 54 shows the graph these points EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 31 Sensor Resistance Versus Temperature 89 5 78 ams 39 9 7619 42 7359 24 7099 06 EN 9 20 OHM 77 F 25 30 40 50 60 70 80 90 100 110 F 0 10 20 30 40 C TEMPERATURE DEGREES M5874A Fig 54 Graph of Sensor Resistance versus Temperature Sensor Type T7770B C 10K ohm setpoint potentiometer Relative Sensor Use Offset Setpoint Temperature Table 32 lists the points for Sensor Resistance versus Temperature Fig 55 shows the graph of these points Table 32 Sensor Resistance Versus Temperature F Above and Below Setpoint Resistance Ohms BB 8 883244 878637 x G 869633 111 F Above and Below Setpoint een 8605 79 8560 52 8515 25 8469 98 8424 71 8379 45 8334 18 NTT TT UEBER Fd 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 DEGREES F M11609 Fig 55 Graph of Sensor Resistance versus Temperature Sensor Type T7770B C 10 K ohm setpoint potentiometer Absolute Sensor Use Direct Setpoint Temperature Table 33 lists the poi
40. Tire seconds to sample the ProofAirFlow input If ProofAirFlow shows that the fan is not running for consecutive seconds then the control is shut down for the minimum off time Then the control including the fan is restarted and ProofAirF low is again tested If ProofAirFlow shows air flow then the control continues to operate but if ProofAirFlow fails to show air flow then the control is again shut down for the rrinirnumoff time After three unsuccessful restarts a LOSS AIR FLOW alarmis issued and the control stays in the DISABLED rrode with the OUT off SpaceTerrpZeroCal provides offset calibration for the space analog sensor input and is added to the sensed value The range of is between 5 and 5 degrees F ResistiveOffsetCal O provides offset calibration for the resistive analog sensor input and is added to the sensed value The range of ResistiveOffsetCal O is between 15 and 15 degrees F ResistiveOffsetCal 1 provides offset calibration for the resistive analog sensor input and is added to the sensed value The range of ResistiveOffsetCal 1 is between 15 and 15 degrees F VoltageOffsetCal O provides offset calibration for the voltage current analog sensor input and is added to the sensed value The current analog Sensor is converted to a voltage by a 249 ohmresister wired across the input terminals The range of VoltageOffsetCal O is between 1 and 1 volt Vo
41. VA or less capacity Formultiple controllers operating from a single trans former the same side of the transformer secondary must be connected to the same input terminal in each controller 21 on the W7750A and 24 on the W7750B C and the ground terminals must be con nected to a verified earth ground for each controller in the group See Fig 23 Controller configurations are not necessarily limited to three devices per trans former Forthe W7750B C Controller which has Triac out puts all output devices must be powered from the same transformer as the one powering the Excel 10 W7750 Controller e Use the heaviest gauge wire available up to 14 AWG 2 0 with a minimum of 18 AWG 1 0 for all power and earth ground connections 35 Tominimize EMI noise do not run Triac output wires in the same conduit as the input wires or the LON Works Bus communications wiring e Unswitched 24 Vac power wiring can be run in the same conduit as the LONWOoRks Bus cable Make earth ground connections with the shortest possible wire run using 14 AWG 2 0 wire good earth ground is essential for W7750 operation Ideally connect the earth ground to the ground bus at a motor control center or circuit breaker panel However if the nearest ideal earth ground is inac cessible consider an alternate source for earth ground Metal water pipe is generally a good ground but do not use sprinkler pipe if prohibited by lo
42. air temperature falls below the user settable discharge air low limit setpoint DaTempLoLim an alarm is issued and the outdoor air damper is driven below the minimum position setting until the discharge temperature is up to the low limit If necessary the damper can go completely closed even during Occupied mode operation As the discharge temperature warms up the economizer modulates open until the minimum position setting is reached At this point the low limit alarm is cleared ECONOMIZER ENABLE DISABLE CONTROL The W7750 Controller has inputs to determine if the outdoor air is suitable to augment cooling The economizer dampers can be enabled disabled for using outdoor air as the first stage of cooling based on one of ten allowable strategies 1 Digital Input Enable Disable contact closure enables economizer 2 Outdoor Temperature when the outdoor temperature is less than OaEconEnTemp then the outdoor air is suitable to augment cooling 3 Outdoor Enthalpy Type A when the outdoor enthalpy meets the H205 type A requirements the outdoor air is suitable to augment cooling 4 Outdoor Enthalpy Type B when the outdoor enthalpy meets the H205 type B requirements the outdoor air is suitable to augment cooling 5 Outdoor Enthalpy Type C when the outdoor enthalpy meets the H205 type C requirements the outdoor air is suitable to augment cooling 74 2958 1 62 6 Outdoor Enthalpy Type D when the outdoor enthalpy
43. alarrrs If alams are suppressed UNSUPPRESS ALARMS causes Alarmtype and Alarrri og to be retumed to reporting alams See Alarmfor more details All unspecified values are the sarre as MODE ENABLE 1 8S86c v 10 ejes 558005 10910 901 OutDrive is used for Factory Testing only TestHCPos rMiMarivalue sbManHeatCoolPosSO percentage During MANUAL mode ManHeatCoolPos sets the modulating position of the 127 to 127 heating or cooling motor if configured to the specified position If ManHeatCoolPos is less than O or greater than 100 the motor is overdriven for a period longer than the notor tirre to ensure that itis at the end of travel The heat motor is driven when HeatCoolMode is 1 and the cool motor is driven when HeatCoolMode is At the rrorrert when the node transfers to MANUAL MODE or HeatCoolMode is changed ManHeatCoolPos is set the current motor position TestEconPos rMiMarivalue sbManEconPosSO Percentage During MANUAL mode ManEconPos sets the modulating position of the 127 to 127 economizer motor if configured to the specified position If ManEconPos is less than or greater than 100 the notor is overdriven for a period longer than the motor tire to ensure that itis at the end of travel At the moment when the node transfers to MANUAL MODE ManEconPos is set the current motor position H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 201 8960
44. mechanism Excel 10 types number of different Excel 10 types currently three Map complexity 20 using One to Many and not using points with read write 30 average 45 many points with read write ability 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Appendix E Sensor Data for Calibration Resistance Sensors Sensor Type C7100A and C7170A Sensor Use Discharge air Outdoor air Table 29 lists the points for Sensor Resistance versus Temperature Fig 52 shows the graph of these points Table 29 Sensor Resistance Versus Temperature 8 3898 309 O 39 3 9 SENSOR RESISTANCE VERSUS TEMPERATURE SR EE 40 30 20 10 0 10 20 30 40 50 60 70 80 90100 110 120 DEGREES F M11615 Fig 52 Graph of Sensor Resistance versus Temperature Sensor Type C7031B1033 C7031C1031 C7031D1062 C7031F1018 W7750B C only C7031J1050 C7031K1017 74 2958 1 110 Sensor Use Return Air Discharge Air Temperature Table 30 lists the points for Sensor Resistance versus Temperature Fig 53 shows the graph of these points Table 30 Sensor Resistance Versus Temperature 8 189 180979 8 3948 1704 78 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105110 115120 DEGREES F M11614 Fig 53 Graph of Sensor Resistance versus
45. meets the H205 type D requirements the outdoor air is suitable to augment cooling 7T Differential Temperature the difference between outdoor temperature and return air temperature is compared to DiffEconEnTemp to determine whether outdoor air or return air is more suitable for use to augment mechanical cooling 8 Single Calculated Enthalpy the calculated outdoor enthalpy in btu Ib is compared to the enthalpy setpoint OaEnthEn in btu Ib and the outdoor temperature is compared to the outdoor temperature limit setpoint OaEconEnTemp for a high limit The compared difference determines whether outdoor air is suitable for use to augment mechanical cooling 9 Differential Enthalpy Either Sensed or Calculated the difference between outdoor enthalpy and return air enthalpy determines whether outdoor air or return air is more suitable to augment mechanical cooling When enthalpy sensors are configured they are used for comparing enthalpy If no enthalpy sensors are available then enthalpy is calculated using outdoor and return air humidity and temperature sensors The switching differential is fixed at 1 0 mA for enthalpy sensors and 0 25 btu lb for calculated enthalpy NOTE f no return temperature sensor is configured space temperature is used to calculate return air enthalpy 10 Network Enabled the network input DestEconEnable controls the enabling and disabling of the economizer When using the network input select E
46. on terminals 9 and 10 using a jumper puts the controller in continuous occupied mode 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER 1 2 2 LOAD AND CONTROLLER POWER gt 24 W7750A CONSTANT VOLUME AHU CONTROLLER WALL MODULE GROUND LONWORKS BUS DISCHARGE AIR TEMP JACK FOR LONWORKS BUS NETWORK ACCESS A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 O MM2 WITH MINIMUM OF 18 AWG 1 O 2 FOR EARTH GROUND WIRE A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 22 M10085C Fig 27 Typical W7750A Controller AHU application wiring diagram For more information on note 2 refer to Fig 25 74 2958 1 38 HEAT 1 HEAT 2 COMP 1 COMP2 anag LOAD POWER LINE H CONTROLLER POWER lt 24 eo To Te To To TA Te Te To ETT e l 9 8 NOT USED W7750A CONSTANT VOLUME AHU CONTROLLER WALL MODULE DISCHARGE AIR TEMP LONWORKS BUS A 2 5 5 8 9 LONWORKS BUS a 8 2 m NETWORK gii ACCESS T7770C WALL A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG
47. operation is switched to the HEAT mode When in the HEAT mode all cooling outputs are driven closed or off and the staged heating outputs are enabled for use When in the HEAT mode the PID EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER cooling control algorithm compares the current space temperature to the EffectiveHeatSetPt and calculates a PID error signal This error signal causes the heating stage outputs to be cycled as required to drive the space temperature back to the Setpoint Fig 50 illustrates the relationship between PID error and staged output activity As the error signal increases the space temperature gets further away from the setpoint or is remaining below the setpoint as time elapses additional stages of heating are energized until if PID error reaches 100 percent all configured stages are on The PID control algorithm used to control staged heating is anticipator driven and is similar to the algorithm used in the T7300 commercial thermostat All staging events are subject to a minimum interstage time delay that is based on the cycles per hour user setting HeatCycHr The minimum interstage time delay ranges from 90 seconds at 12 cycles per hour to eight minutes at two cycles per hour See Table 17 The user has the option to disable the minimum run timer for heating DisMinHtTimer If the minimum run timer is disabled the interstage time delay is fixed at 20 seconds The cycling rate is separat
48. or door in the room When a window is detected to be Open digital input contacts Open equals window open the normal temperature control is disabled and the W7750 Controller enters the Freeze Protect mode Freeze Protect mode sets the space setpoint to 46 4 F 8 C and brings on the fan and heat if the space temperature falls below this setpoint Normal temperature control resumes on window closure The Window sensor signal can also be a network input from another LONWoRKS Bus device so that no physical sensor is required at the receiving W7750 Controller SMOKE CONTROL The Excel 10 W7750 Controller supports three smoke related control strategies 1 Emergency Shutdown all outputs off 2 Depressurize fan on outdoor air damper closed 3 Pressurize fan on outdoor air damper open The controller is placed in one of these three control states whenever the W7750 mode becomes SMOKE EMERGENCY which can be initiated via a network command DestEmergCmd or from a local physically connected smoke detector digital input When in SMOKE EMERGENCY mode the W7750 Controller uses the control strategy found SmkCtlMode one of the three listed above and the normal temperature control function is disabled If a W7750 local smoke detector trips the SrcEmerg network variable for other LONWORKS Bus devices to receive is set to the Emergency state DEMAND LIMIT CONTROL DLC When LONWORKS Bus network receives a high elec
49. recovery operation the setpoint changes at a rate in degrees per hour depending on the outdoor air temperature If there is no outdoor air temperature sensor available then MinHtRamp is used as the recovery rate HEAT RECOVERY RAMP RATE DEGREES HOUR MaxHtRam MinHtRam OUTDOOR AIR TEMPERATURE OaTempMinHtRa OaTempMaxHtRam M10109 Fig 46 Setpoint ramping parameters with ramp rate calculation NOTE Recovery ramping applies between scheduled heating or cooling setpoint changes from UNOCCUPIED to STANDBY UNOCCUPIED to OCCUPIED and STANDBY to OCCUPIED Scheduled setpoint changes from OCCUPIED to UNOCCUPIED or OCCUPIED to STANDBY do not use a ramped setpoint but instead use a step change in setpoint Recovery ramps begin before the next scheduled occupancy time and are ramped from the setpoint for the existing scheduled occupancy state to the setpoint for the next occupancy state RECOVERY RAMPING FOR HEAT PUMP SYSTEMS When the node is controlling heat pump equipment during the recovery ramps the heating setpoint is split into a heat pump setpoint for compressors and an auxiliary heat setpoint for auxiliary heat stages The heat pump setpoint is a step change at the recovery time prior to the OCCUPIED time Recovery time is computed from the configured heat recovery ramp rate The recovery time is calculated Recovery time OCC setpoint current setpoint ramp rate See Fig 47 for the various setpoints
50. terrperature goes below the low lirrit Energy has priority Over ventilation When the effective occupancy is OCCUPIED and laqUseHeat is 1 TRUE then the heating stages or modulating heating are tumed on to prevent the discharge air terrperature fromgoing below the discharge air terrperature low lirrit Ventilation has priority over energy gt o H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 46 8960 Table 25 Configuration Parameters Continued E Vision Legend IM Monitor P Parameter S Schematic NOTE Physical I O points that are configurable are in Table 20 Engineering Units English Metric or States plus Range Comments OverridePriority configures the override arbitration between ManOcc Bypass state and the wall module override button If OverridePriority is LAST then the last command received fromeither the wall module iManOcc deterrrines the effective override state If OverridePriority is 1 NET this specifies that when ManOcc is not OC_NUL that the effective occupancy is ManOcc regardless of the wall module override state UseW a llModStpt specifies the OC_OCCUPIED terrperature setpoint source If UseVWallModStpt is FALSE then the occupied TenpSetPts are used when the effective occupancy is OC_OCCUPIED If UseV a llModStpt is 1 TRUE then the well modules setpoint knob is used when the eff
51. the value is O the result is Window Sensor Not Configured NOTE rvoWndowis called rviEnergyHoldOff in the LonMark compliance profile rMEcon rMEcon allows one controller to detemine the suitability of outdoor air for SNVT switch free cooling and share this with many other nodes When Econ state is not SW then the local sensor selected by Config EconEnable is ignored and Econ is used instead The inputs states have the following meanings If the state is SVV OFF or other and the value is don t care then the outdoor air is not suitable for free cooling If the state is SV ON and the value is then the outdoor air is not suitable for free cooling If the node receives this corrbination of state and value then state is set to OFF If the state is SW ON and the value is not zero then outdoor is suitable for free cooling If the state is 5 then the network variable is not bound the communications path fromthe sending node has failed or the sending node has failed Outdoor air is not suitable for free cooling DestEconEnable rwiEcon SW NUL MIX x X ForrwEcon state refer to nviEcon value SNVT switch 1 255 H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 901 8960 Table 26 LoNMARK Open System Points Continued Engineering Units English Metric or States plus Range 91215 enjeA JO eje1s 55900 12910 BiJu
52. 0 Floating Control to modulate cooling valves heating valves and econorrizers No PVM outputs are allowed in the W7750A model The controller is configured at the factory with the enurrerated value in the Default column The eight outputs on the VV7750B are all digital outputs The eight outputs on the VV7750C consist of five digital and three analog Outputs O U U N p 115 jo 5 Em DigitalOut O specifies which logical digital output function is assigned to the digital physical output according to the enumerated list that is shown in the Engineering Units States colurm The W7750 Controllers are configured at the factory with the enumerated value in the Default colunmn Only H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 20 Input Output Points Continued Engineering Units English Metric or States plus Range 1819 10 ONEA 10 91216 Degrees C 1 to 50 Degrees F Degrees C SI INVALID 3010 122 1 to 50 Percentage SI INVALID 10to 90 ma SI INVALID 410 20 Degrees F Degrees C SI INVALID 40 to 122 40 to 50 Percentage SI INVALID 10to 90 SI INVALID FltrPressSensr siFilterPressureS10 inw kPa SI INVALID Oto 5 Oto 1 25 E Vision Legend M Monitor P Parameter S Schematic FiftySixtyHz specifies the frequency of the main power input for the controller Correctly selecting the FiftySixtyHz decreas
53. 010 50 SI INVALID Percentage SI INVALID 10 to 90 Percentage SI INVALID 10 to 90 Degrees F 14 to 122 Degrees C 10 to 50 Oooo o x o x x x E Vision Legend M Monitor P Parameter S Schematic SpaceTemp is the space terrperature sensed by another node and is typically bound to SpaceTerrp of another node having a space terrperature sensor If SpaceTerrp has a value other than SI INVALID it is used as the sensed space terrperature by the node rather than using any local hard wired sensor If the value is outside the allowed range of 10 to 50 degrees C 18 to 90 degrees F then the node uses the value of the nearest range limit When SpaceTerrp is not bound to another node may be Used to fix the sensed terrperature A management node may write a value other than SI INVALID causing the node to use SpaceTerrp instead of the hardwired sensor An application restart or power failure causes the fixed sensor value to be forgotten and SpaceTerrp to be retumed to SI INVALID SpaceTemp is the sensed space terrperature fromthe locally wired sensor SpaceTemp is typically bound to SpaceTerrp of another node which nay not have its own space ten perature sensor but control the sarre space The reported space terrperature includes the offset correction Config SpaceTenpZeroCal If the space terrperature sensor is not connected or is shorted or if SpaceTerrp is bound to another node then SpaceTemp is set to SI INV
54. 030 nviSpaceTemp nvoSpaceTemp SNVT_temp_p SNVT temp p nviSetPoint nvoUnitStatus SNVT temp p SNVT hvac status nviApplicMode nvoEffectSetPt SNVT hvac mode SNVT temp p nviOccCmd nvoOutsideTemp SNVT_occupancy SNVT temp p Optional nviSetPtOftset Network nvoOutsideRH SNVT temp p Variables SNVT lev percent nviOutsideTemp nvoCOo SNVT temp p SNVT ppm nviOutsideRH SNVT lev percent nviSpaceRH SNVT lev percent SNVT_ppm nviEmergCmd SNVT_hvac_emerg Configuration Properties nc49 Send Heartbeat mandatory nc60 Occupancy Temperature Setpoints mandatory nc48 Maximum Receive Time optional Location optional CO2Limit mandatory Mandatory Network Variables Manufacturer Defined Section Hardware Input M11580 Fig 9 Functional profile LONMARK RTU object details variables not implemented in Excel 10 CVAHU are greyed Environmental Operating Temperature 40 to 150 40 to 65 5 C Shipping Temperature 40 to 150 F 40 to 65 5 C Relative Humidity 5 to 95 noncondensing Vibration Rated V2 level compliant 74 2958 1 18 Inputs Outputs The W7750A Unit supports the following hardware features Three 20 Kohm NTC 1000 through 150 000 ohm or PT3000 250 through 12 000 ohm resistive analog inputs one reserved for space temperature and one reserved for the setpoint knob Three dry contact digital input
55. 2 WITH MINIMUM OF 18 AWG 1 FOR EARTH GROUND WIRE ASSURE PROPER ELECTRICAL CONTACT WIRES MUST TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK ib Fig 28 Typical W7750A Controller with separate transformer application wiring diagram For more information on note 2 refer to Fig 25 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER ML6161 FLOATING ACTUATOR cw LOAD AND CONTROLLER POWER W7750A CONSTANT VOLUME AHU CONTROLLER WALL MODULE EARTH GROUND LONWORKS BUS DISCHARGE AIR TEMP iR JACK FOR LONWORKS BUS NETWORK ACCESS A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 WITH A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A LOAD POWER WIRE CAN BE CONNECTED TO TERMINAL 22 M10083C Fig 29 W7750A Controller floating economizer damper wiring diagram For more information on note 2 refer to Fig 25 39 NOTE Digital outputs are configurable The terminal locations for each function are user selectable The Network DO is configured to be economizer float close in this figure and W2 is configured to be economizer float open Physical output terminal features are done in E Vision by the custom wiring function 74 2958
56. 29 32 23 STANDARD UTILITY CONDUIT BOX 2 X 4 MOUNTING HOLES 5 1 16 128 size see Product Names section for differences models T7560A1016 and T7560B1018 are shown in Fig 11 The 7560 are the same physical size Duct Sensor The dimensions of the C7770A duct mounted sensor are shown in Fig 12 KNOCKOUTS FOR EUROPEAN APPLICATIONS p 3 5 32 80 ___ 32 4 2 3 8 60 gt s lt 999909090 23 8 60 t s 917812 STANDARD amp e UTILITY 5 5 Sti al Zlol22 CONDUIT 3 za SHEE E EE BOX 2 X 4 1 MOUNTING HOLES 5 31812 z 2 2 2 8 S8 S iB 3 Jaxta 2 EI 15119 Fig 10 T7770A B C D construction in mm 74 2958 1 20 1 1 4 5 1 16 128 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER 12345678 0 Co 2 11 16 68 3 7 8 27 7 Honeywell lt 3 15 16 99 y vs 1 3 16 30 me M17479 11 T7560A B construction mm 216 k 1 2 13 id 1 2 13 3 8 10 DIAMETER DIAMETER 1 1 2 38 3 1 2 89 1 2 13 _ 6
57. 5 80 18478 70 24028 60 31525 42 52675 The T7770 Wall Module setpoint potentiometers have the following calibration points Temperature F Resistance Value ohms 85 1290 70 5500 55 9846 RESISTANCE OHMS 20K OHM AT 77 F 25 30 40 50 60 70 80 90 100 110 F 0 10 20 30 40 C TEMPERATURE DEGREES TEMPERATURE SENSOR m 10K OHM SETPOINT RESISTANCE VALUES M11620 Fig 40 Temperature sensor resistance plots Alarms When an Excel 10 has an alarm condition it reports it to the central node on the LONWORKS Bus typically the Excel 10 Zone Manager See Table 12 Information contained in an alarm message is Subnet Number LONWoRKS Bus subnet that contains the Excel 10 node that has the alarm condition Subnet 1 is on the Zone Manager side of the router Subnet 2 is on the other side Node Number Excel 10 node that has the alarm condition see Network Alarm Alarm Type Specific alarm being issued An Excel 10 can provide the alarm types listed in Table 12 Table 12 Excel 10 Alarms Alarm type Name of alarm or error bit number Meaning of alarm code or error bit RETURN TO NORMAL 128U Return to no alarm after being in an alarm condition This code is added numerically to another alarm code to indicate that the alarm condition has returned to normal ALARM NOTIFY DISABLED 255U The alarm reporting was turned off by
58. 5 32 156 1 4 6 2 HOLES 7724 Fig 12 C7770A construction mm 21 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Configurations General Tables 3 and 4 provide an overview of the Excel 10 W7750 configuration options All W7750s are assumed to have a supply fan digital output Additionally Tables 3 and 4 list the general mechanical equipment options available with the W7750 Controller See Application Step 6 Configure Controllers for further information on configurations N CAUTION For floating control the Excel 10 W7750 Controller is designed to work only with Series 60 valve and damper actuators Full stroke actuator drive time must be between 20 and 240 seconds 0 25 to 4 0 minutes Table 3 Common Configuration Options Summary For W7750A B C Controllers Option Possible Configurations Common W7750 Models Supply Fan Ti Mandatory Digital Outpt Type of Air Handler Conventional Heat Pump Occupancy Sensor None Connected Contacts closed equals Occupied Network Occ Unocc signal received via the LONWORKS Bus network Window Sensor None Physically Connected Contacts closed equals window closed Network Window Open Closed signal received via the LONWORKS Bus Wall Module Option The T77560A B has no LONWoRKS Bus access Local direct wired to the controller Network
59. 5 Averaging Discharge Return Air Temperature 13 in 330mm insertion length Sensor PT3000 C7170A1002 Outdoor Air Temperature Sensor PT3000 Echelon Based Components and Parts Q7750A2003 Excel 10 Zone Manager Free Topology Tranceiver FTT Q7751A2002 Router FTT Q7751B2000 Router Twisted Pair Tranceiver 78 kbps to FTT Q7752A2001 Serial Interface FTT Q7752A2009 Serial Interface PCMCIA card FTT Q7740A1008 Excel 10 2 Way Repeater Used to extend the length of the LONWORKS Bus Contains built in termination modules Q7740B1006 Excel 10 4 Way Repeater Used to extend the length of the LONWORKS Bus Contains built in termination modules XD 505A Standard C Bus Communications Submodule XD 508 C Bus Communications Submodule 1 megabit baud rate 209541B Termination Module One two required per LONWORKS Bus segment 205979 Operator Terminal Cable for LONWORKS Bus Serial interface to wall module or controller Accessories Sensors EL7680A1008 Wall Mounted Wide View Infrared Occupancy Sensor EL7628A1007 Ceiling Mounted Infrared Occupancy Sensor EL7611A1003 EL7612A1001 Ultrasonic Occupancy Sensors EL7630A1003 Power Supply Control Units for Occupancy EL7621A1002 sensors EL7621A1010 C7242A1006 Sensor Monitor Use to measure the levels of carbon dioxide C7400A1004 Solid State Enthalpy Sensor 4 to 20 mA For outdoor and return air enthalpy C7600B1000 Solid State Humidity Sensor 2 to 10 V
60. 59005 12900 109390 one of these DO selections controller is allowed The states have the following rreaning If the state is SVV OFF the corresponding free logical Output and therefore the physical output if configured is off If the state is SW ON and the value is O then the corresponding free logical output and therefore the physical output if configured is off If the node receives this corrbination of state and value then state is setto SVV OFF If the state is SW ON and the value is not zero then the corresponding free logical Output and therefore the physical output if configured is on If the state is SW other then the network variable is not bound the corrrrunicatiors path fromthe sending node has failed or the sending node has failed The corresponding free logical output does not change if the network variable input fails DestFreel rwiFreel SW OFF X Refer to 1 value SW ON SW NUL eee qae je E IIT DestFree2 rMFree2 state SW OFF x X Referto Free2 value SW ON SW NUL rMVVSHPEnable Oto 100 WSHPEnable value is used to enable the compressor stages in heat purrp applications Typically nviVVSHP Enable is bound to water flow sensor that detects heating cooling water supplied to the heat pump If there is no water flowing the compressor is disabled If the state is SVV OFF the compressor is disabled in heat purrp applications If the state is SVV ON and the val
61. 65 psi for 2 9 and 4 9 is or 2 9 and 4 9 G 3 4 in npt 19 mm 45 psi Coefficient of volume or capacity index C gallons per minute divided by the square root of the pressure drop across the valve V5853A V5863A Three way mixing terminal unit hot water valve Use with M6410 Valve Actuator Close off rating 0 19 0 29 0 47 0 74 1 2 and 1 9 C 1 2 for 0 19 to 0 74 is 55 psi 1 2 and 1 9 C is 22 13 mm or 2 9 and 4 9 C 3 4 19 psi 2 9 and 4 9 C is 26 psi mm R8242A Contactor 24 Vac coil DPDT AT72D AT88A AK3310 etc Transformers EN 50 022 DIN rail 35 mm by 7 5 mm 1 3 8 in by 5 16 in Obtain locally Each controller requires 5 in Two DIN rail adapters Cabling Serial Interface Cable male DB 9 to female DB 9 or female DB 25 Obtain locally Part number TKAD from Thomas and Betts two for each controller Obtain locally from any computer hardware vendor Honeywell AK3791 one twisted pair AK3792 two twisted pairs LONWORKS Bus plenum 22 AWG 0 34 mm twisted pair solid conductor nonshielded or Echelon approved cable Level IV 140 F 60 rating Honeywell AK3781 one twisted pair AK3782 two twisted pairs LONWORKS Bus nonplenum 22 AWG 0 34 mm twisted pair solid conductor nonshielded or Echelon approved cable Level IV 140 F 60 rating Honeywell AK3725 Inputs 18 AWG 1 0 mm five wire cable bundle
62. 70A B C D E F G Wall Module Specification Data T7560A B Digital Wall Module Specification Data Excel 10 Q7750A Zone Manager Specification Data Excel 10 Q7751A B Router Specification Data Excel 10 Q7752A Serial Interface Specification Data Q7752B PCMCIA LONWORKS 10 Card Specification Data Excel 10 Q7740A B FTT Repeaters Specification Data Excel 10 Q7750A Zone Manager Checkout and Test Manual Excel 10 W7750A B C Controller Installation Instructions Excel 10 T7770A B C D E F G Wall Module Installation Instructions T7560A B Digital Wall Module Installation Instructions Excel 10 Q7750A Zone Manager Installation Instructions Excel 10 Q7751A B Router Installation Instructions Excel 10 Q7752A Serial Interface Installation Instructions Q7752B PCMCIA LONWoRKS PCC 10 Card Installation Instructions Excel 10 Q7740A B FTT Repeaters Installation Instructions Excel 10 209541B Termination Module Installation Instructions Excel E Vision User s Guide CARE User s Manual CARE Excel 10 Zone Manager User s Guide CARE Icon Guide XBS User s Manual XBS Application Guide EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Product Names The W7750 Controller is available in three models W7750A Constant Volume AHU Controller W7750A Version W7750B Constant Volume AHU Controller W7750B Version W7750C Constant Volume AHU Controller W7750C Version The T7770 Wall Module is available in
63. A B CIRCUIT BOARD USE SMALL FLAT OBJECT TO MOVE THE SWITCHES AS NEEDED FROM POSITION O NO TERMINATION POSITION I SINGLY TERMINATED POSITION DOUBLY TERMINATED LABEL ON Q7740B 4 WAY REPEATER NOTE Q7740B 4 WAY REPEATER SHOWN Q7740A 2 WAY REPEATER HAS TWO SWITCHES D LonWorks Bus Termination network switches in the Q7740A B Repeaters Q7751A LONWORKS BUS PART NO ROUTER 2095418 pe TERMINATION lt MODULE RJ 45 LONWORKS PLUG BUS WIRE NUTS F Twist wires and attach wire nuts to RJ 45 Adapter cables LonWorks Bus segment wires and Termination Module to connect to a Q7751A B Router M11618A Fig 39 LoNWoRksO Bus termination wiring options Step 5 Order Equipment After compiling a bill of materials through completion of the previous application steps refer to Table 11 for ordering information Contact Honeywell for information about Controllers and Wall Modules with no logo See Table 11 Excel 10 W7750 Controller Ordering Information 45 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 11 Excel 10 W7750 Controller Ordering Information Part Number Product Description Excel 10 W7750 Controllers Comments Sensor 20 Kohm NTC W7750A2005 Constant Volume AHU Controller W7750A Three Analog Inputs Three Digital Inputs and Six 24 Vac Relay Outputs W7750B2011 Constant Volume
64. A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 WITH MINIMUM OF 18 AWG 1 O 2 FOR EARTH GROUND WIRE A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED BEFORE INSERTION INTO THE TERMINAL BLOCK A WIRING DIAGRAM SHOWS JUMPER FOR 2 IN FACTORY DEFAULT HIGH SIDE POSITION A FOR WIRING DETAILS FOR PWM DEVICES REFER TO DOCUMENTATION INCLUDED WITH PWM DEVICES 10080 Fig 32 W7750B C Controller damper actuator wiring diagram For more information on note 2 refer to Fig 25 41 WINDOWS CONTACTS CONTACTS CLOSED EQUALS WINDOW CLOSED OCCUPANCY SENSOR CONTACTS CLOSED EQUALS OCCUPIED lt 24 VAC o TRIAC EQUIVALENT CIRCUIT W7750B CONSTANT VOLUME AHU CONTROLLER WALL MODULE LON JACK EARTH GROUND E Q P LONWORKS BUS DISCHARGE OUTDOOR AIR TEMP ENTHALPY RETURN ENTHALPY L A REEERE IA 812118 g LONWoRKS BUS amp s 8 8 NETWORK xxle dpil gl ACCESS T7770C WALL A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 O MM2 WITH A OF 18 AWG 1 O 2 FOR EARTH GROUND WIRE VAN TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A WIRING DIAGRAM SHOWS JUMPER FOR 2 INFACTORY DEFAULT HIGH SIDE POSITION 10079 Fig 33 W7750B C wi
65. ABLE AIR VOLUME CONTROLLER N tima s LONWORKS BUS 5 Hunneg ROUTER EXCEL 10 T7770 EXCEL 10 T7560A B WALL MODULE WALL MODULE Honeywell Fig 1 Typical system overview 74 2958 1 M17487 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Control Application W7750 systems in commercial buildings typically incorporate a packaged air handler system that delivers a constant volume air at preconditioned temperatures to the zone being served Each zone is usually serviced by a separate however sometimes two or more AHUS service the same zone Note that the W7750 is not designed to control Variable Air Volume VAV air handlers or Multi Zone air handlers where one air handler simultaneously controls the space temperature in many zones j The W7750 can control staged modulating heating cooling coils mixed air economizer dampers and the system fan Control of heat pump units where the compressor s is used for both cooling and heating is also provided The zone the W7750 services can use a T7770 or T7650 for space temperature sensing and an LONWORKS Bus network access for users Fig 2 shows a typical W7750 control application FILTER OUTDOOR AIR olblolololololololololololololol EXCEL 10 W7750 CVAHU Honeywell
66. AGE 2 See DigitalOut O for enurrerated nanes The VV7750 Controllers are 255 Value of State is configured at the factory with the enumerated value in the Default colurm DigitalOud5 enurrerated 1 31 HEAT STAGE 1 See DigitalOut O for enurrerated nanes The VV7750 Controllers are 255 Value of State is 5 configured at the factory with the enumerated value in the Default colurm DigitalOut 6 Pa Qu REC enurrerated 1 31 UNUSED See DigitalOut O for enurrerated nanes The VV7750 Controllers are 255 Value of State is 255 configured at the factory with the enumerated value in the Default colurm DigitalOud 7 See DigitalOut O enurrerated 1 31 UNUSED See DigitalOut O for enurrerated nanes The VV7750 Controllers are values 255 Value of State is 255 configured at the factory with the enumerated value in the Default colurm ndciloSelect CONV HtPunp specifies the type of equipment being controlled When HtPurrp is O CONV the node is controlling conventional gas or electric heat When HtPurrpis 1 HP the node is controlling a heat purrp E Vision Legend M Monitor P Parameter S Schematic D 5 Jo ee S d W uoISIA 3 559005 12900 DigitalOut O through DigitalOut 5 are available in the W7750A model which can configure staged outputs The VV7750A Controller can drive Series 6
67. AHU Controller W7750B Six Analog Inputs Five Digital Inputs and Eight High side Low side switchable Triac Outputs W7750C2001 Constant Volume AHU Controller W7750C Six Analog Inputs Five Digital Inputs Five Triac Outputs and Three Analog Outputs T7770 and T7560 Wall Modules T7770A1006 Sensor with Honeywell Logo Used with Excel 5000 and Excel 10 Controllers T7770A1014 Sensor with No Logo Used with Excel 5000 and Excel 10 Controllers T7770A2004 Sensor LONWoRKS Jack and Honeywell Logo Used with Excel 5000 and Excel 10 Controllers T7770A2012 Sensor with LoNWonRks Jack and No Logo Used with Excel 5000 and Excel 10 Controllers T7770B1004 Sensor with Setpoint and LONWORKS Jack Degrees F Absolute Honeywell Logo T7770B1046 Sensor with Setpoint and LONWORKS Jack Relative Setpoint Honeywell Logo T7770B1012 Sensor with Setpoint and LONWORKS Jack No Degrees F Absolute Logo T7770B1020 Sensor with Setpoint and LONWORKS Jack Degrees C Absolute Honeywell Logo T7770B1053 Sensor with Setpoint and LONWORKS Jack No Relative Setpoint Logo T7770B1038 Sensor with Setpoint and LONWORKS Jack No Degrees C Absolute Logo T7770C1002 Sensor with Setpoint Bypass LED and Degrees F Absolute LoNWORks Jack Honeywell Logo T7770C1044 Sensor with Setpoint Bypass LED and Relative Setpoint LONWoRKS Jack Honeywell Logo T7770C1010 Sensor with Setpoint Bypass LED and Degrees F Absolute LONWORKS Jack No Logo T7770C1028 Sensor with Setpoint Bypass LED and Degrees C Abs
68. ALID OdrTerrp allows one outside air tenperature sensor at a node to be shared by many other nodes When OdTemp is not SI INVALID then any local sensor is ignored by the local control algorith mand OdTemp is used instead If the value is outside the allowed range of 40 to 50 degrees C 72 to 90 degrees F then the node uses the value of the nearest range limit OdrTerrp allows the local outdoor tenperature sensor to be shared with other nodes and is typically bound to OdTerrp on other nodes If the local sensor is configured by Select OdTerrpis periodically sent on the network If the local sensor is not configured or currently showing an error the value is SI INVALID OdHumiallows one outdoor hurridity sensor at a node to be shared by many other nodes When mviOdHumis notSI INVALID then the local sensor is ignored by the local control algorithmand OdHumis used instead If the value is outside the allowed range 10 to 90 percent then the node uses the value of the nearest range limit OdHumiallows the local outdoor hurridity sensor to be shared with other nodes and is typically bound to OdHumon other nodes If the local sensor is configured by Select OdHumis periodically sent on the network If the local sensor is not configured or currently showing an error the value is SI INVALID H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 LOL 8960 Table 26 LoNMARK Open System Points Continued Engineer
69. ALS 24 AND 25 0 50 100 150 200 OF LOAD mE NEMA class 2 transformer voltage output limits EARTH M10089B GROUND Fig 22 Power wiring details for one Excel 10 per transformer See Fig 23 for wiring more than one Excel 10 per transformer TRANSFORMER 120 240 W7750B C 1 EARTH EARTH EARTH M10090A GROUND GROUND GROUND Fig 23 Power wiring details for two or more Excel 10s per transformer IMPORTANT If the W7750 Controller is used on Heating Cooling Equipment UL 1995 U S only devices and the transformer primary power is more than 150 volts connect the transformer secondary to earth ground see Fig 24 74 2958 1 34 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER 7 LINE VOLTAGE TRANSFORMER GREATER 150 PET ais A 77 EARTH GROUND __ EARTH GROUND A IF THE W7750 CONTROLLER IS USED IN UL 1995 EQUIPMENT AND THE PRIMARY POWER IS MORE THAN 150 VOLTS GROUND 24 VAC COM SIDE OF TRANSFORMER SECONDARY MI0088A Fig 24 Transformer power wiring details for one Excel 10 used in UL 1995 equipment U S only IMPORTANT Notes on power wiring All field wiring must conform to local codes and ordi nances or as specified on installation wiring dia grams To maintain NEC Class 2 and UL ratings the instal lation must use transformers of 100
70. Digital Input directly wired to the controller Contacts closed means that the filter is dirty 3 Local Analog Input for Differential Pressure across the Filter directly wired to the controller The sensor must be a 2 to 10V device representing 0 to 5 inw 1 25 kPa 23 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Allowable Heating and Cooling Equipment Configurations Each W7750 device can control a variety of different types of mechanical cooling and heating equipment within roof top air handlers See Fig 13 through 17 for a conceptual overview of some typical configurations For specific wiring details see the Prepare Wiring Diagrams section STAGED HEATING COOLING CONTROL Staged equipment control is available for up to four stages of heating or four stages of cooling On the W7750 the stages are activated through digital outputs Triacs on the W7750B C and dry contact relays on the W7750A one for each stage wired to 24 Vac contactors see Fig 27 and 30 in Step 4 Prepare Wiring Diagrams section for wiring details Note that the number of physical Digital Outputs DOs on the controller limits the total number of stages that can be controlled For example the W7750A Model has six digital outputs and because one is used for the supply fan there are five DOs available for any combination of heating and cooling stages with a maximum ol four stages of heating and four stages for cooli
71. EL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Occasionally the PID parameters require tuning to optimize comfort and smooth equipment operation This applies to the W7750A B C Controllers CVAHU Controllers are configured by E Vision with default values of PID parameters as shown in Appendix C Table 21 If different values for these parameters are desired Table 13 lists some recommended values to use as a starting point These recommended values are based on past experience with the applications and in most cases do not require further adjustment Table 13 Recommended Values For PID Parameters Heat Heat Heat Heat Cool Cool Cool Cool Econ Prop Integ Deriv Control Prop Integ Deriv Control Control Equipment Configuration Gain Gain Gain Band Gain Gain Gain Band Band Single Stage 2 3000 0 10 2 3000 0 10 10 Two Stages 3 2000 0 10 3 2000 0 10 10 Three Stages 4 5 1500 0 10 4 5 1500 0 10 10 Four Stages 6 1000 0 10 6 1000 0 10 10 Series 60 Modulating Floating 2 750 0 10 2 750 0 10 10 PWM Modulating 2 900 0 10 2 900 0 10 10 If the PID parameters require adjustment away from these values use caution to ensure that equipment problems do not arise see CAUTION below If any change to PID control parameters is made the adjustments should be gradual After each change the system should be allowed to stabilize so the effects of the change can be accurately observed Then
72. Enable Disable 1 Digital Output Enable Disable signal for controlling an external Economizer signal for controlling an external economizer package economizer package 2 Series 60 Modulating electric 2 Series 60 Modulating electric damper motor or pneumatic via damper motor or pneumatic via transducer transducer 3 None 3 Pulse Width Modulating electric damper motor or pneumatic via transducer 4 None IAQ Option 1 None 1 None 2 Local IAQ Digital Input directly 2 Local IAQ Digital Input directly wired to the controller Contacts wired to the controller Contacts closed means poor IAQ is detected closed means poor IAQ is detected 3 Network IAQ Override signal 3 Network IAQ Override signal received via the LONWORKS Bus received via the LONWORKS Bus 4 Local CO Analog Input directly wired to the controller The sensor must be a 0 to 10V device representing 0 to 2000 PPM Coil Freeze 1 None 1 None Stat Option 2 Local Coil Freeze Stat Digital 2 Local Coil Freeze Stat Digital Input directly wired to the controller Input directly wired to the controller Contacts closed means that coil freeze condition is sensed Contacts closed means that coil freeze condition is sensed Filter Monitor Option 1 None 1 None 2 Local Dirty Filter Digital Input directly wired to the controller Contacts closed means that the filter is dirty 2 Local Dirty Filter
73. F Degrees Celsius C Relative Temperature Delta Degrees Fahrenheit DDF Degrees Kelvin K Relative Humidity Percent 96 Percent 96 Air Flow Cubic Feet per Minute CFM Meters Cubed per Hour m3h Concentration Parts Per Million PPM Parts Per Million PPM Enthalpy British Thermal Units per Pound of Air btu lb kiloJoules kilogram kj kg Differential Pressure Inches of Water Column inw kiloPascal kPa 65 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER All of the NvName values that are stored in EEPROM memory have a prefix of nci NOTE These parameters are stored in EEPROM and are limited to 10 000 writes Do NOT use them as outputs from Control Strategies Time Programs or Switching Tables If these points are changed more than 10 000 times irreversible hardware failure results Tables 20 through 28 provide point attributes as follows Engineering Units This field indicates the point valid range and displayed Engineering Unit For digital points the valid states and the corresponding enumerated values are shown Default The value or state of the point on controller start up E Vision M Monitor These points are viewable within the E Vision Controller Monitoring on line screen P Parameter These points refer to control parameters settable in the Application Selection dialog boxes in E Vision S Schematic These points appear in E Vision monitor mode graphics Shareabl
74. Honeywell Excel 10 W7750A B C CONSTANT VOLUME CONTROLLER EXCEL Introduction Application Steps U S Registered Trademark Copyright 2000 Honeywell Inc All Rights Reserved SYSTEM ENGINEERING Contents ua 6 Description of 5 6 Control Application 7 Control Provided eee epe 7 Products COV6red exe A RENE 8 Organization of Manual sss 8 Applicable Literature roten terii die eet eed 8 Product Names pb ee etre ere p EI E EE 9 Agency Listings 1 a ei He eni LA IER LIO ERR La ee laisi 9 Abbreviations and Definitions 10 Construction c 11 s m sS nm a n unn aa 11 PERFORMANCE SPECIFICATIONS 13 LONMARK Functional Profile sess 17 18 ANALOG INPUTS e uns 18 DIGITAL INPUTS In u h as ama DEDECUS 19 TRIAC OUTPUTS ON THE W7750B C MODELS ONLY 19 DIGITAL OUTPUTS irte entente Fe eene cite es 19 Wall Modul8S dens cates alrite esp Hera aia rte ae 20 Duct Sensor earth tee De uve EPIO Re E 20 Gonflguratioris fie utn sa mwa lace GR saa 22 General aR aS EE 22 Allowable Heating and C
75. KS Bus The Excel 10 Zone Manager also has the functionality of an Excel 100 Controller but has no physical I O points NOTE The Q7750A Zone Manager can be referred to as E Link in the internal software CARE E Vision User interface software used with devices that operate via the FTT LONWORKS Bus communications protocol Firmware Software stored in a nonvolatile memory medium such as an EPROM Floating Control Refers to Series 60 Modulating Control of a valve or damper Floating Control utilizes one digital output to pulse the actuator open and another digital output to pulse it closed FTT Free Topology Transceiver IAQ Indoor Air Quality Refers to the quality of the air in the conditioned space as it relates to occupant health and comfort 1 O Input Output the physical sensors and actuators connected to a controller x R times or current times resistance refers to Ohms Law V R K Degrees Kelvin Level IV Refers to a classification of digital communication wire Formerly known as UL Level IV but not equivalent to Category IV cable If there is any question about wire compatibility use Honeywell approved cables see Step 5 Order Equipment section LoNWoRks Bus Echelons LONWORKS network for communication among Excel 10 Controllers LoNWoRks Bus Segment An LONWORKS Bus section containing no more than 60 Excel 10s Two segments can be joined together using a router NEC N
76. LD HEAT POS FIELD ECON POS FIELD UPDATE NO FIELDS iM H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 Table 23 Status Points Continued m Engineering Units English User Address Field Name Metric or States plus Range E Vision Legend M Monitor P Parameter S Schematic 91215 JO enjeA JO ae 55900 12910 siDischargeTenpS7 Degrees F ecco to 122 Degrees C 1 to 50 siDischargeS Degrees F 3010 122 Degrees C 1 to 50 Degrees F EE to 122 Degrees C 1 to 50 ubRetumHumidityS1 Percentage DataG2 10 to 90 siRetumEnthalpyS7 9 di 20 siOutdoorTenpS Degrees F Cass to 122 Degrees 40 to 43 OaHum ubOutdoorHunidityS 1 siOutdoorEnthalpyS7 FilterPi siFilterPressureS1O inw kPa Oto 5 Oto 1 25 8960 L SI INVALID SI INVALID SI INVALID UB INVALID SI INVALID SI INVALID UB INVALID SI INVALID SI INVALID SI INVALID siDischargeTerrpS 7 siDischargeTerrpS7 is the discharge air terrperature used by the control process and is read fromthe local sensor nvolO siDischargeTenpS 7 If the sensor has failed is not configured siDischargeTerrpS7 is 51 INVALID siDischargeSetPtS 7 siDischargeSetPtS 7 is the calculated desired discharge air terrperature when cascade control is being used siRetumTenpS7 siRetumTen pS 7 is the return a
77. LINE Contactor for fan Catalog in rush rating D X Stages 0 0 NOTE For this example assume the cooling stage outputs are wired into a compressor control circuit and therefore have no impact on the power budget TRADELINE Catalog 0 32A at 24 Vac M6410A Steam 0 7 Heating Coil Valve TOTAL 35 9 VA The Excel 10 System example requires 35 9 VA of peak power therefore a 40 VA AT72D Transformer is able to provide ample power for this controller and its accessories Alternatively a 75 VA AT88A Transformer could be used to power two Excel 10 Systems of this type or a 100 VA AT92A Transformer could be used to power two of these Excel 10 Systems and meet NEC Class 2 restrictions no greater than 100 VA See Fig 22 and 23 for illustrations of power wiring details See Table 8 for VA ratings of various devices EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 8 VA Ratings For Transformer Sizing Device Description VA W7750A Excel 10 W7750 Controller 6 0 W7750B C 10 W7750 Controllers 12 0 ML6161A B Damper Actuator 35 Ib in 2 2 R8242A Contactor 21 0 M6410A Valve Actuator 0 7 MMC325 Pneumatic Transducer 5 0 ML684 Versadrive Valve Actuator 12 0 ML6464 Damper Actuator 66 3 0 ML6474 Damper Actuator 132 Ib in 3 0 ML6185 Damper Actuator SR 50 12 0 ML7984B PWM Valve Actuator 6 0 For contactors and similar devices the in rush powe
78. Module Override LED indicates the current bypass mode status see the T7770C D Wall Module Bypass Pushbutton and Override LED section The LCD on the T7560 Digital Wall Module indicates the current bypass mode status see the T7560A B Digital Wall Module Bypass Pushbutton and LCD Occupancy Symbols section BypassTime BypassTime is the time between the pressing of the override button at the wall module or initiating BYPASS nviManOcc and the return to the original occupancy state When the bypass state has been activated the bypass timer is set to BypassTime default of 180 minutes 55 OverrideType OverrideType specifies the behavior of the override button on the wall module There are three possible states that have the following meanings NONE disables the override button NORMAL causes the override button to set the OverRide state to OC BYPASS for BypassTime default 180 minutes when the override button has been pressed for approximately 1 to 4 seconds or to set the OverRide state to UNOCC when the button has been pressed for approximately 4 to 7 seconds When the button is pressed longer than approximately 7 seconds then the OverRide state is set to NUL no manual override is active BYPASS ONLY causes the override button to set the OverRide state to BYPASS for BypassTime default 180 minutes on the first press 1 to 7 seconds On the next press the OverRide state is set to NUL no manual
79. O then the setpoint is back to the original setpoint over a minute interval H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 23 Status Points Continued Engineering Units English User Address Field Name Metric or States plus Range s lacOverRide d W uo s A 3 nvoDatal SrrokeMonitor FALSE nvoCtDataG1 TRUE StatusFilter nvoDatal DirtyFilter FALSE rwoCtiDataG1 TRUE nvoDatal ShutDown FALSE nvoCtDataG1 TRUE StatFreezeStat nvoDatal CoilFreezeStat FALSE nvoCtDataG1 TRUE MonitorSw nvoDatal MonSwitch FALSE rwoCtiDataG1 TRUE U U 91815 10 enjeA 10 91215 m jJ C B nvoDatal VindowOpen FALSE nvoCtDataG1 TRUE E Vision Legend M Monitor P Parameter S Schematic laqOverRide When an economizer is configured laqOverRide indicates the current state of the indoor air quality an is used by the control process to open the economizer dan per to let in more outside air 1 means poor indoor air quality and O means indoor air quality is OK When laqOverRide is 1 the lAQ OVERRIDE alarmis initiated laqOverRide indicates poor air quality if the analog sensor OR a digital sensor local or via network shows poor air quality Specifically if nvoData2 siSpaceCo2SO is not SI INVALID and exceeds nciAuxlSetPtsiCO2laq irritSO then poor air quality is detected Also if nvila
80. ON INTO THE TERMINAL BLOCK A WIRING DIAGRAM SHOWS JUMPER FOR J2 IN FACTORY DEFAULT A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM HIGH SIDE POSITION USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 O 2 A WITH A MINIMUM OF 18 AWG 1 0 2 FOR EARTH GROUND WIRE ISOLATING RELAYS MUST BE USED WHEN CONNECTING TO STAGED HEAT COOL EQUIPMENT b A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK N A WIRING DIAGRAM SHOWS JUMPER FOR J2 IN FACTORY DEFAULT Fig 30 Typical W7750B Controller with staged heating HIGH SIDE POSITION 10081 cooling wiring diagram For more information Fig 31 W7750B Controller with floating heating cooling note 2 refer to Fig 25 and economizer wiring diagram For more information on note 2 refer to Fig 25 74 2958 1 40 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER DAMPER RO ECONOMIZER PWM ACTUATOR POWER SIGNAL sia 2 amp 31 30 29 28 27 26 25 24 22 22 21 20 19 18 17 16 lt OM 24 VAC TRIAC EQUIVALENT CIRCUIT W7750B CONSTANT VOLUME AHU CONTROLLER WALL MODULE LONWORKS B el NI N B A B e DISCHARGE AIR TEMP LONWoRKS BUS 9 8 7 6 5 413 2 1 JACK FOR HEE LONWORKS BUS NETWORK alal E ACCESS T7770C WALL A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO
81. ONTROLLER Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig List of Figures 1 Typical syStem u ERR cc eevee eevee Ae ee ed ee le es eee heey 6 2 750 Control ea yas cn dais d aec ret a eet cete 7 3 Excel 10 W7750A Constant Volume AHU Controller 12 4 W7750A constr ction imin MM u u Pe Pre e t dede depen eh 13 5 Excel 10 W7750B Constant Volume AHU Controller 14 6 Excel 10 W7750C Constant Volume AHU Controller 15 7 W7750B C construction in in mm W7750C shown has three 4 to 20 mA analog outputs 16 8 DIN railadapters uu ua E t e E EHI na de e ER P RAE RD EPA EROS 17 9 Functional profile of LONMARK RTU object details variables not implemented in Excel 10 CVAHU are groyed se e t ee e BR EE Oe EN REESE 18 10 E77 70A B O D constr ctiori iri mI 4 2 tte Dose eire 20 Tit T7560A B constr ction In ims MM zs ioi et sene teg OR 21 12 07770 construction in in Drm use
82. Q is detected closed means poor IAQ is detected 3 Network IAQ Override signal 3 Network IAQ Override signal received via the LONWORKS Bus received via the LONWORKS Bus 4 Local CO Analog Input directly wired to the controller The sensor must be a 0 to 10V device representing 0 to 2000 PPM CO3 Coil Freeze 1 None 1 None Stat Option 2 Local Coil Freeze Stat Digital Input directly wired to the controller Contacts closed means that coil freeze condition is sensed 2 Local Coil Freeze Stat Digital Input directly wired to the controller Contacts closed means that coil freeze condition is sensed Filter Monitor 1 None 1 None Option 2 Local Dirty Filter Digital 2 Local Dirty Filter Digital Input directly wired to the controller Input directly wired to the Contacts closed means that the filter is dirty controller Contacts closed means that the filter is dirty 3 Local Analog Input for Differential Pressure across the Filter directly wired to the controller The sensor must be a 2 to 10V device representing 0 to 5 inw 1 25 kPa ROOM TEMPERATURE SENSOR RmTemp This is the room space temperature sensor This sensor is the T7770 or the T7560A B Wall Module When it is configured it provides the temperature input for the W7750 temperature control loop If it is not configured it is required that a room temperature sensor value be transmitted from ano
83. S 7 The current terrperature control point such that the Current actual space terrperature setpoint which the controller is presently trying to maintain in the conditioned space is calculated fromthe various Setpoints operating modes network variable inputs and optimumstart up pararreters The final result is stored in siTerrpControlPtS 7 siSpaceTenpS7 siSpacelerrpS7 is the space terrperature used by the control process and is read fromanother node rviSpaceTerrp or a local sensor via nvolO siSpaceTerrpS7 or nvolO siRetumTen ps 7 If the network input is not SI INVALID then the network input has priority The local sensor is selected nciConfig ControlUsesRtnAirTerrp When nciCornfig ControlUsesRtnAirTerrp is O then the space terrperature sensor is selected When nciConfig ControlUsesRtnAirTerrp is 1 then the return terrperature sensor is selected If the network input and the selectied local sensor has failed or are not configured sispaceTerrpS7 is SI INVALID N Table 23 Status Points Continued 9 m E Vision Legend M Monitor P Parameter S Schematic lt oje lt 9 a E 8 8 5 22 Z ZIS Engineering Units English 0 915 Metric or States plus Range S i ue WSHPEnable FALSE WSHPEnable WSHP Enable reports the state of the current state 1 rMWSHPEnable The states for niVWSHPEnable are as follows If rMVVSHPEnable state is SVV OFF and the niVWSHPEnable va
84. S BUS NETWORK ACCESS Z EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 MM WITH A MINIMUM OF 18 AWG 1 0 MM FOR EARTH GROUND WIRE ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A AN ANALOG OUTPUT DEVICE HAS A SIGNAL COM TERMINAL CONNECT IT TO THE 24 VAC COM TERMINAL NUMBER 24 M16417B Fig 35 W7750C Controller with 4 to 20 mA heating cooling and economizer wiring diagram AOs must use terminals 16 17 or 18 The AOs can be set to be reverse acting For more information on note 2 refer to Fig 25 See Fig 36 or 37 to wire a pneumatic transducer to a W7750B or W7750C EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER MMC325 PNEUMATIC TRANSDUCER INCREASE DECREASE PNEUMATIC VALVE 24 VAC COM W7750B C CONSTANT VOLUME AHU CONTROLLER A MAKE SURE ALL TRANSFORMER POWER WIRING IS AS SHOWN REVERSING TERMINATIONS RESULTS IN EQUIPMENT MALFUNCTION A OPTIONAL 24 VAC WIRING TO NEXT CONTROLLER A USE 1 4 IN 6 MM PNEUMATIC TUBING MINIMUM BRANCH LINE MUST BE 6 FT 1 8M OR LONGER A TERMINALS 16 17 18 ARE ANALOG OUTPUTS W7750C ONLY M00286 Fig 36 Pneumatic transducer to W7750B C B shown see triangle note 4 To use the analog outputs on the W7750C with 2 to 10V actuators or transducers a 500 ohm 1 percent or better tolerance resistor must be
85. SENSOR VOLTAGE VERSUS PRESSURE 0 50 1 00 1 50 2 00 2 50 INW 3 00 3 50 400 4 50 5 00 11606 Fig 64 Graph of Sensor Voltage versus Pressure Inw Lon Neuron and LonWorks are registered trademarks Echelon Corporation LONMARK and LONMARK logo are registered trademarks of the LONMARK Interoperability Association Honeywell Home and Building Control Products Honeywell AG B blinger Strafe 17 D 71101 Sch naich Phone 49 7031 637 01 Fax 49 7031 637 493 SA o ARCH eeyo ee www honeywell com
86. Standard thermostat wire Honeywell 752 typical or equivalent Outputs Power 14 to 18 AWG 2 0 to 1 0 mm NEC Class 2 140 F 60 C rating equivalent Honeywell AK3702 typical or 18 AWG 1 0 mm twisted pair Non plenum equivalent Honeywell AK3712 typical or 16 AWG 1 3 mm twisted pair Non plenum equivalent Honeywell AK3754 typical or 14 AWG 2 0 mm two conductor Non plenum Step 6 Configure Controllers Excel E Vision PC Software is used to configure W7750 Controllers to match their intended application The E Vision User Guide form number 74 2588 provides details for operating the PC software 7750 Controllers are shipped from the factory with a default hardware configuration On power up the controller configuration parameters are set to the default values listed in Table 20 in Appendix C The controller can operate normally in this mode if the equipment and wiring match the default setup and given valid sensor inputs the outputs are controlled appropriately to maintain space temperature at the default setpoint The default arrangement for the W7750A 74 2958 1 48 is printed on the terminal labels Also see the wiring details in Fig 27 in Step 4 Prepare Wiring Diagrams The labeled I O terminals are defined in Table 10 Step 7 Troubleshooting Troubleshooting Excel 10 Controllers and Wall Modules In addition to the following information refer to the I
87. StatusEconEn 23 FilterPress 23 StatusEconOut 23 FltrPressStPt 21 StatusFilter 23 Free1Stat 23 StatuslaqOvr 23 Free2Stat 23 StatusManOcc 23 GainCoolDer 21 StatusMode 23 GainCoollnt 21 StatusOcc 23 GainCoolProp 21 StatusOcySen 23 GainHeatDer 21 StatusOvrd 23 GainHeatlnt 21 StatusSched 23 GainHeatProp 21 StatusSmoke 23 HeatCycHr 25 StatusWndw 23 HeatMtrSpd 25 StptKnobHiLim 21 HeatOccSpt 26 StptKnobLowLim 21 HeatPos 23 23 HeatStbySpt 26 UseRaTempCtl 25 HeatStgsOn 23 UseWallModSipt 25 26 WSHPEnable 23 etp laqUseHeat 25 MaxCIRamp 21 Failure Detect User Addresses and Table Number User Address Table Number MinHtRamp 21 DestBypass 22 MonitorSens 23 DestDIcShed 22 MonitorSw 23 DestEconEnable 26 21 DestFree1 22 DestFree2 22 OaEnthCalc 23 DestHvacMode 26 DestlaqOvrd 28 arum DestOaEnth 28 OaTemp 23 DestOaHum 26 OaTempCILkOut 21 estOaHum OaTempHtLkOut 21 DestOaTemp 26 OaTempMaxCIRp 21 DestOccSensor 26 OaTempMinCIRp 21 DestRmTemp 26 OaTempMaxHiRp 21 DestSchedOcc 22 OvrdPriority 25 ss E 26 OvrdType 25 PwmFullScale 21 DestWSHPEnable 22 PwmPeriod 21 PwmZeroScale 21 Table 19 lists the applicable Engineering Units for the analog RaEnth 23 points found in the W7750 Table 19 Engineering Units For Analog Points English Units Inch Pound Standard International Units SI Measured Item Description Abbreviation Description Abbreviation Temperature Degrees Fahrenheit
88. TE The reported temperatures includes the offset correction provided by Config VoltageOffsetCal Retumenthalpy is the measured return air enthalpy If the sensor is not configured or has failed the value is SI INVALID Since the C7400 reports comfort due to enthalpy in rrilliarrps enthalpy is also reported in rrilliarrps Refer to the NOTE on RetumHurridity OutdoorTemp is the measured outdoor air terrperature If the sensor is not configured or has failed the value is Sl INVALID Refer to the NOTE on RetumHurridity OutdoorHurridity is the measured outdoor air humidity If the sensor is not configured or has failed the value is UB INVALID Refer to the NOTE on RetumHurridity OutdoorEnthalpy is the measured outdoor air enthalpy If the sensor is not configured or has failed the value is SI INVALID Since the C7400 reports comfort due to enthalpy in rrillianqps enthalpy is also reported in milliarrps Refer to the NOTE on RetumHurridity FilterPressure is the measured differential pressure across the return air filter If the sensor is not configured or has failed the value is the SI INVALID Refer to the NOTE on RetumHurridity H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 ubOut Byte Offset 24 Bit Offset O DigitalOut1 ubOut Byte Offset 24 Bit Offset 1 DigitalOut2 ubOut Byte Offset 24 Bit Offset 2 DigitalOut3 ubOut Byte Offset 24 Bit Of
89. TER 7 The pressure drop across the filter exceeds the limit and the filter requires maintenance The control runs normally SMOKE ALARM 8 The smoke detector has detected smoke and the node has entered an emergency state IAQ OVERRIDE 9 The indoor air quality sensor has detected that the indoor air quality is less than the desired standard and additional outdoor air is being brought into the conditioned space LOW LIM ECON CLOSE 10 The economizer has to close beyond the minimum position to prevent the discharge air temperature from going below the discharge temperature low limit NOTE The node can be reset by switching the node to MANUAL and then to the normal operating mode see Fan Operation in Appendix B Also the Excel 10 variables AlarmLogX where X is 1 through 5 that store the last five alarms to occur in the controller are available These points can be viewed through XBS or E Vision Certain alarm conditions are suppressed conditionally as follows Broadcasting the Service Message The Service Message allows a device on the LONWORKS Bus to be positively identified The Service Message contains the controller ID number and therefore can be used to confirm the physical location of a particular Excel 10 in a building There are three methods of broadcasting the Service Message from an Excel 10 W7750 Controller One uses a hardware service pin button on the side of the controller see Fig 41 The second uses the wall m
90. TPUT TYPE CONTROL The W7750B C Controller provides control for mixed output types of applications such as PWM heating and staged cooling control occurring simultaneously with Series 60 Floating Economizer Damper Control Occupancy Sensor Excel 10 W7750 Controllers provide a digital input for connection to an occupancy sensor This is a device such as a passive infrared motion detector that contains a dry contact see following NOTE closure to indicate whether or not people are present in the space The Excel 10 W7750 Controller expects a contact closure to indicate the space is Occupied See Fig 27 through 35 in Application Step 4 Prepare Wiring Diagrams for details on wiring connections The control algorithm in the Excel 10 Controller uses the occupancy sensor if configured to determine the Effective Occupancy see Table 5 mode of operation If the Time Of Day TOD schedule indicates an Occupied state and the occupancy sensor contact is closed the Effective Occupancy mode is Occupied However if the TOD schedule indicates an Occupied state and the occupancy sensor contact is open 74 2958 1 26 then the Effective Occupancy mode is STANDBY The temperature control algorithm is then controlled to the STANDBY Cooling and Heating Setpoints If the occupancy sensor is not configured a local controller can be put in the STANDBY mode only by either a one to one association of the occupancy sensor from another Excel 10 Control
91. TURN TO NORMAL nurreric value The type also is recorded in Alarrri og When a newalarmis detected just the corresponding nurreric value for the alarmis reported Refer to Table 12 Excel 10 Alarrrs in the System Engineering Guide for all the error conditions that may be reported Meum corresponding bit in alarm bit n Alarmtype 1 24 without RETURN TO NORMAL alarm bitfO Byte Offset O Bit Offset 1 NodeDisableAln node is the LONVVORKS node number in domain entry 1 of the nodes domain table assigned to the node x x alarm bit OJByte Offset OBit Offset O InputNVFailAlmoalarm bit n contains a bit for every possible alarmcondition Each alarmtype has H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 alarm bit O Byte Offset O Bit Offset 2 SensorFailAlm alarm bit O Byte Offset O Bit Offset 3 FrostProtectAlny alarm bit O Byte Offset O Bit Offset 4 alarm bit O alarm bit O Byte Offset O Bit Offset 6 DirtyFilterAIny alarm bit O alam bit 1 Byte Offset 1 Bit Offset O laqOverRideAlny Table 23 Status Points Continued Engineering Units English Metric or States plus Range 91816 10 10 216 E Vision Legend M Monitor P Parameter S Schematic alarm Byte Offset O Bit Offset 2 SensorFailAlm alarm bit O Byte Offset
92. UAL another mode has been commanded or an application restart has been performed SUPPRESS ALARMS See the Daetal rrode for more details The valid enurrerated values are UNSUPPRESS ALARMS MODE ENABLE enables the node so that the control algorithm deterrrines the operating mode and controls the physical outputs MODE ENABLE is the default state after power restore or application restart If the mode wes MANUAL and niManualMode is set to MODE ENABLE the node then goes through application restart MODE DISABLE sets the node to the DISABLED MODE The alannNODE_DISABLED is initiated all control loops are disabled and the physical Outputs are turned off The physical inputs network variable inputs and network variable outputs are still functioning when the node is in the DISABLED MODE MODE MANUAL sets the node into the MANUAL mode If MANUAL is selected the controller enters Test Mode rranual override of outputs The alarm NODE DISABLED is initiated all control loops are disabled and the physical Outputs are controlled manually as commanded by nviManValue The nodes configuration variables and nviMarnivalue are used to set valves darrpers digital output to the desired manual positions or state s The physical inputs network variable inputs and network variable outputs are still functioning when the node is in the MANUAL rrode SUPPRESS ALARMS causes nvoAlarmtype to be set to ALARM NOTIFY DISABLED and Alarrri og to no longer record
93. UL Mode is set according to the Datal rrode If Data node is START WAIT SMOKE EMERGENCY or FREEZE PROTECT mode is set to which indicates that the node is in a mode not supported by the SNVT_hvac_nrode data type If Datal rrode is HEAT then mode is set to HVAC HEAT which indicates that heating energy is being supplied to the controlled space If Data1 rrode is COOL then is setto HVAC COOL which indicates that cooling energy is being supplied to the controlled space If Datal rrode is OFF MODE or DISABLED MODE then mode is set to HVAC OFF which indicates that the node is not running its normal tenperature control and the outputs are not tumed off If Data1 rrode is EMERG HEAT mode is set to HVAC EMERG HEAT where in a heat pump application the compressor stages are disabled and only auxiliary heating stages are tumed on If Detal rrode is MANUAL or FACTORY_TEST mode is set to HVAC TEST which indicates that the node is in a manual or test mode If Data1 rroc is FAN ONLY rode is set to HVAC_FAN_ONLY which indicates that the fan is running but the space terrperature control is tumed off heat output prirrary reports the current percentage of heating stages or rrodulating heat tumed on If the node is controlling a heat purrp heat output _ primary reports the current percentage of corrpressor stages tumed on when the node is in the HVAC HEAT node If the node is controlling a heat purrp heat output se
94. UTTON Honeywell M17500 Fig 44 The T7560A B Digital Wall Module Bypass pushbutton location APPENDICES Appendix A Using E Vision to Commission a W7750 Controller NOTE When commissioning a CVAHU W7750 Controller E Vision first checks that the actual hardware model such as W7750A B C is the same type which was selected from the Application Selection Output tab If the types do not match the download does not occur and the user entered values in the Application Selection screens all revert back to default values Sensor Calibration The space temperature the optional resistive and voltage current W7750B C only inputs can all be calibrated The wall module setpoint potentiometer can not be calibrated Perform the sensor calibration by adding an offset value either positive or negative to the sensed value using E Vision menus see E Vision user guide form number 74 2588 When calibrating voltage current sensors on the W7750B C the offset amount entered by the user is in volts regardless of the inputs actual engineering units See Appendix E for information on how to derive the proper voltage value to enter as an offset during calibration Setting the Pid Parameters The W7750 is designed to control a wide variety of mechanical systems in many types of buildings With this flexibility it is necessary to verify the stability of the temperature control in each different type of application 74 2958 1 EXC
95. W NUL SW NUL p E Vision Legend IM Monitor P Parameter S Schematic allows one outdoor enthalpy sensor at a node to be shared by many other nodes When nviOdEnth is not SI INVALID then any local sensor is ignored by the local control algorithmand OdEnth is used instead If the value is outside the allowed range 4 to 20 mA then the node uses the value of the nearest range limit rvoOdEnth allows the local outdoor enthalpy sensor to be shared with other nodes and is typically bound to OdEnth on other nodes If the local sensor is configured by Select nviOdEnth is periodically sent on the network If the local sensor is not configured or currently showing an error the value is SI INVALID allows the monitor switch to be shared with another node MonSw is typically bound to an SBC to indicate a user defined alarmcondition The output values have the following meanings If the state is SVV OFF and the value is O then the monitor switch is open If the state is SVV ON and the value is 100 percent then the monitor switch is closed If the state is SVV and the value is O then the rronitor switch is not configured by Select For MonSwstate refer to IMonSw value laqOwr allows an indoor air quality sensor to be shared many other nodes The states are follows If the state is SVV OFF the value is don t care then the indoor air quality is
96. acceptable If the state is ON and the value is then the indoor air quality is acceptable If the node receives this combination of state and value then state is set to SW OFF If the state is SVV ON and the value is not zero then the indoor air quality is not acceptable and additional outdoor air is needed to bring it back to acceptable If the state is SVV NUL and the value is don t care then the indoor air quality is acceptable If the state is other then the network variable is not bound the communications path fromthe sending node has failed or the sending node has failed The indoor air quality is acceptable For laqOvrstate refer to laqOvr value lacOvr allows an indoor air quality sensor to be shared with other nodes and is typically bound to laqOvr on other nodes If Data2 siSpaceCo2 is not SI INVALID and exceeds Aux1SetPt CO2lagLimit then poor air quality is detected In addition if a local digital input is configured for OVERRIDE and IO laqOverRide is 1 TRUE then poor air quality is also detected The state has the following meanings If the state is SVV OFF and the value is O then the indoor air quality is acceptable If the state is SVV ON and the value is 100 percent then the indoor air quality is not acceptable and additional outdoor air is needed to bring it back to an acceptable state If the state is SVV NUL and the value is O then the economizer for this node has not been configured or there is
97. air enthalpy used by the control process and is read fromanother node via NMOdEnthS7 or the local sensor nvolO siOutdoorEnthalpyS 7 If the network input is not SI INVALID then the network input has priority If both the network input and the local sensor have failed or are not configured siOutdoorEnthalpyS7 is SI INVALID siFilterPressureS10C siFilterPressureS10 is air pressure across the air filter used by the control process and is read fromthe local sensor nvolO siFilterPressureS 10 If the local sensor has failed or is not configured siFilterPressureS 10 is SI INVALID siSpaceCo2S0 siSpaceCo2S0 is the indoor air content used by the control process and read the local sensor via nvolO siSpaceCo2sSoO If the local sensor has failed is not configured siSpaceCo250 is SI INVALID H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 E Vision Legend M Monitor P Parameter S Schematic 558005 29111 BiJuo9 siMonitor1S10 siMonitor1S10O is the voltage applied at the rronitor input terrrinals If the sensor is not configured or has failed the value is SI INVALID sSbCoolPosSO If the node is configured for modulating cool sbCoolPosSO shows the currert position of the cooling modulating output SbHeatPosSO If the node is configured for modulating heat sbHeatPosSO shows the current position of the heating modulating output sbEconPosSO If the node is con
98. analog value is greater than 0 percent an additional time is added to the minimum pulse time The length of time added is directly proportional to the magnitude of the analog value The PWM actuator will begin to use the analog value at the end of the pulse and will continue to use this value until a new pulse is received Refer to Appendix B under PWM Control for an example Series 60 actuators are generally less expensive than those for PWM but the trade off is that PWM requires only a single controller digital output while floating control uses two DOs Refer to Appendix B under Series 60 Modulating Control for an example Fig 14 illustrates a system with modulating heating and cooling see Fig 29 and 31 in Step 4 Prepare Wiring Diagrams section COOL HEAT COIL COIL DISCHARGE AIR CHILLED WATER VALVE FAN STARTER EXCEL 10 CVAHU W7750A B C ololololololololololololololojio M17492 Fig 14 Fan modulating heating and modulating cooling NOTE Pneumatically actuated valves can be controlled using a pneumatic transducer device See Fig 17 Also transducer devices are available from third party vendors to convert PWM outputs to a voltage or current signal if desired HEAT PUMP CONTROL The W7750 Controller handles heat pump applications similarly to staged heating cooling control Heat pump applications are supported by providing outputs for up to four compressor stages a change over relay for the refri
99. anged if needed on the XI581 82 and XI584 C Bus devices and on an XBS central and on E Vision 2 Excel 10 points mappable and calibration configuration and internal data sharing points can be viewed and changed as allowed via Direct Access DA mode in the XBS subsystem menu or via XI584 49 8960 EN Field Name CORMode nciloSelect CorOnMode COR ON HEAT COR ON COOL i dl dl Engineering Units English Metric or States plus Range DISCHARGE RETURN DISCHARGE TEMP 20KNTC RETURN TEMP 20KNTC UNUSED RAI DISCHARGE TEMP PT3000 OUTDOOR TEMP PT3000 RETURN TEMP PT3000 DISCHARGE TEMP 20KNTC RETURN TEMP 20KNTC UNUSED RAI RTN HUM C7600C RETURN ENTHALPY OD HUM C7600C OUTDOOR ENTHALPY FILTER STATIC PRESS DIFF SPACE CO2 MONITOR SENSOR1 RTN HUM C7600B OD HUM C7600B UNUSED VAI RTN HUM C7600C RETURN ENTHALPY OD HUM C7600C OUTDOOR ENTHALPY FILTER STATIC PRESS DIFF SPACE CO2 MONITOR SENSOR1 RTN HUM C7600B OD HUM C7600B UNUSED VAI OCC SENSOR OCC TIME CLOCK PROOF AIR FLOW ECON ENABLE IAQ OVERRIDE SMOKE MONITOR FILTER SHUT DOWN WINDOW _OPEN MONITOR SCHED MASTER UNUSED DI Table 20 Input Output Points 181 10 ONEA 10 91246 UNUSED VAI UNUSED VAI C TIME IN m E Vision Legend M Monitor P Parameter S Schematic 9JeMpJeH enue
100. ase of the output wiring connected to the Triac digital outputs The same formula and method are used The rule to remember is to keep all power and output wire runs as short as practical When necessary use heavier gauge wire a bigger transformer or install the transformer closer to the controller IMPORTANT No installation should be designed where the line loss is greater than two volts to allow for nominal operation if the primary voltage drops to 102 Vac 120 Vac minus 15 percent To meet the National Electrical Manufacturers Association NEMA standards a transformer must stay within the NEMA limits The chart in Fig 21 shows the required limits at various loads With 100 percent load the transformer secondary must supply between 23 and 25 volts to meet the NEMA standard When a purchased transformer meets the NEMA standard DC20 1986 the transformer voltage regulating ability can be considered reliable Compliance with the NEMA standard is voluntary The following Honeywell transformers meet this NEMA standard Transformer Type VA Rating AT20A 20 AT40A 40 AT72D 40 AT87A 50 AK3310 Assembly 100 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER SECONDARY VOLTAGE Fig 21 Attach earth ground to W7750 Controller terminal 1 See Fig 22 23 and 24 27 through 35 OUTPUT DEVICE POWER TRIAC LINES TO ACTUATORS AND CONTACTORS TRANSFORMER CONNECT POWER TO TERMIN
101. ate Fast Blink when the Excel 10 has an alarm condition EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER STATUS ie LED 1 2225 10095 Fig 42 LED location W7750 T7770C D Wall Module Bypass Pushbutton and Override LED Pressing the bypass pushbutton located on the T7770C D Wall Modules in Fig 43 causes the override LED to display the Manual Override mode of the controller The modes are 7770 gt 177700 OVERRIDE LED BYPASS PUSHBUTTON BYPASS PUSHBUTTON M11617 Fig 43 The T7770C D Wall Modules LED and Bypass pushbutton locations 1 LED Off No override active 2 LED Continuously on Bypass mode timed Occupied override 3 LED One flash per second Continuous Unoccupied override 4 LED Two flashes per second Remote only continu ous Occupied override T7560A B Digital Wall Module Bypass Pushbutton and LCD Display Occupancy Symbols See Fig 44 for the T7560A B Digital Wall Module bypass pushbutton location 51 Press and release the bypass pushbutton located on the T7560A B Digital Wall Modules in Fig 44 for more than one second to cause the sun symbol on the bottom right side of the LCD display to appear Pressing the bypass pushbutton for more than four seconds causes the controller hard wired to the T7560A B to go into continuous unoccupied override The T7560A B displays the moon symbol BYPASS PUSHB
102. atic diagram for a typical W7750B Unit ns 59 Staged output control versus PID Error a sa I su sau a nennen nennen enn nnns RS 60 Point capacity estimate for Zone Manager u a 109 Graph of Sensor Resistance versus 110 Graph of Sensor Resistance versus 110 Graph of Sensor Resistance versus 111 Graph of Sensor Resistance versus Temperature u 111 Graph of Sensor Resistance versus 112 Graph of Sensor Voltage versus Humiditly eene nennen nennen nennt enne 112 C7600C o tp t current vs h mlidity 2 A Lc Pe eR Hd dee lulus 112 Graph of Sensor Current versus Enthalpy volts L 113 Partial psychometric chart for a C7400A Solid State Enthalpy Sensor sss 114 C7400A Solid State Enthalpy Sensor output current vs relative humidity 2 114 Graph of Sensor Voltage versus CO2 concentration ssn 115 Graph of Sensor Voltage versus input Voltage to 115 Graph of Sensor Voltage Vdc versus Pressure Inw sess nnne nnns 116 74 2958 1 4 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER List of Tables Table T
103. ational Electrical Code the body of standards for safe field wiring practices NEMA National Electrical Manufacturers Association the standards developed by an organization of companies for safe field wiring practices Node A Communications Connection on a network an Excel 10 Controller is one node on the LONWoRKS Bus network NV Network Variable an Excel 10 parameter that can be viewed or modified over the LONWORKS Bus network PC An Personal Computer with Pentium processor capable of running Microsoft Windows 95 Pot Potentiometer A variable resistance electronic component located on the T7770B C or T7560A B Wall Modules used to allow user adjusted setpoints to be input into the Excel 5000 or Excel 10 Controllers EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER PWM Pulse Width Modulated output allows analog modulating control of equipment using a digital output on the controller RTD Resistance Temperature Detector refers to a type of temperature sensor whose resistance output changes according to the temperature change of the sensing element Subnet A LONWORKS Bus segment that is separated by a router from its Q7750A Zone Manager TOD Time Of Day the scheduling of Occupied Unoccupied times of operation TPT Twisted Pair Transceiver VA Volt Amperes a measure of electrical power output or consumption as applies to an ac device Vac Voltage alternating current ac volta
104. ature sensor has failed or the network input that the fan is turned on DestHvacMode is FAN ONLY DISABLED Control algorithm is shut off Network input DestManMode containing AHU operational mode information from an operator or the network that has a value of DISABLED NOTE During all modes all digital and analog physical inputs are periodically read the diagnostic output network variables can be polled the input network variables are received and the output network variables are sent periodically 74 2958 1 28 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER APPLICATION STEPS Overview The seven application steps shown in Table 6 are planning considerations for engineering an Excel 10 W7750 System These steps are guidelines intended to aid understanding of the product I O options bus arrangement choices configuration options and the Excel 10 W7750 Controller role in the overall EXCEL 5000 SYSTEM architecture Table 6 Application Steps Step No Description Plan The System Determine Other Bus Devices Required Lay Out Communications and Power Wiring Prepare Wiring Diagrams Order Equipment Configure Controllers loci A OO N Troubleshooting Step 1 Plan the System Plan the use of the W7750 Controllers according to the job requirements Determine the location functionality and sensor or actuator usage Verify the sales estimate of
105. bout the wiring differences between the two types 29 EXCEL 10 W7750 CVAHU CONTROLLER NOTEBOOK PC SHIELDED INTERFACE CABLE EIA 232 SERIAL Q7752A LONWORKS BUS PORT M15120A Fig 18 Connecting the portable operator terminal to the LONWORKS Bus The FTT communication wiring LONWORKS Bus between controllers is a free topology scheme that supports T tap star loop and mixed wiring architecture Refer to the LONWORKS Bus Wiring Guidelines form 74 2865 for complete description of network topology rules See Application Step 3 Lay Out Communications and Power Wiring for more information on bus wiring layout and see Fig 27 through 35 in Application Step 4 Prepare Wiring Diagrams for wiring details The application engineer must review the Direct Digital Control DDC job requirements This includes the Sequences of Operation for the W7750 units and for the system as a whole Usually there are variables that must be passed between the W7750 Controllers and other zone controller s or central plant controller s that are required for optimum system wide operation Typical examples are the TOD Occ Unocc signal the outdoor air temperature the demand limit control signal and the smoke control mode signal It is important to understand these interrelationships early in the job engineering process to ensure implemention when configuring
106. byte with a bit for every physical digital input If the input is shorted to ground the bit is a zero FALSE If the input is open the bit is oneor TRUE is a byte with a bit for every physical digital input If the input is shorted to ground the bit is a zero or FALSE If the input is open the bitis one or TRUE OverRide indicates the status of the wall override pushbutton Itis 1 TRUE if the button is pressed and is FALSE if it isn t pressed OccupancySensor is the state of the digital input configured and wired to the local occupancy sensor 1 means that occupancy is being sensed input circuit shorted and O means that no occupancy is being sensed input circuit open OccTineClock is the state of the digital input configured and wired to a tine clock 1 input shorted means that the scheduled occupancy is OC OCCUPIED and O input open circuited means that the scheduled occupancy is OC UNOCCUPIED ProofAirFlow is the state of the digital input configured and wired to the proof of air flow switch 1 input shorted means that air flow is detected and O input open circuited means that air flow is not detected EconEnableln is the state of the digital input configured and wired to the outdoor air sensor that determines the suitably of outdoor air for free cooling 1 input shorted means that the outdoor air is suitable for cooling and O input open means that the outdoo
107. cal codes Attention must be given when duct work con duit or rebar are to be considered as ground sources It is the responsibility of the installer to assure that these structures are tied back to a known earth ground Step 4 Prepare Wiring Diagrams General Considerations The purpose of this step is to assist the application engineer in developing job drawings to meet job specifications Wiring details are included for the W7750A B C Controllers and the T7770 and T7560A B Wall Modules The drawings detail I O power and LONWORKS Bus communication wiring connections NOTE For field wiring when two or more wires other than 14 AWG 2 0 mm are to be attached to the same connector block terminal be sure to twist them together Deviation from this rule can result in improper electrical contact See Fig 25 The connector block terminals on the W7750 Controllers and on the T7770 Wall Modules accept 14 through 22 AWG 2 0 to 0 34 mm wire The connector block terminals on the T7560A B Wall Modules accept 18 through 22 AWG 1 0 to 0 34 mm wire Table 9 lists wiring types sizes and length restrictions for Excel 10 products 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 9 Field Wiring Reference Table Honeywell listed as AK or equivalent Recommended Specification Wire Minimum Wire or Maximum Length ft Function Size AWG mm Construction Requirement Ven
108. ciated with the failed NV are disabled as if the NV wes not configured 5 All control functions associated with the failed NV disabled as if the NV wes not configured All nodes that support self installation provide a configuration variable to allow a network management tool to also install the node nciNetConfig is only used by a network management tool and may have the following values CFG_LOCAL Node will use self installation functions to set its own network image CFG_EXTERNAL The nodes network irrage has been set by an extemal source E Vision Legend Monitor P Parameter S Schematic raw_data contains the analog to digital converter counts measured fromthe analog input channel H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 Table 25 Configuration Parameters Engineering Units English User Address Field Name or States plus Range e Comments 2 DeviceNarre ASCII Blanks DewviceNarre is 18 character field used to identify the node uniquely as one object at the site or project The contents of the DeviceNarre is maintained by a rranagerrert node If DeviceNarre is all ASCII blanks itis considered uncorfigured e O T a s Seconds The tirre stamp of the last change to the Excel 10 application configuration Tirre meets the ANSI C tirre starrp requirement specifying the nurrber of seconds elapsed since midnight 0 00 00 J anuar
109. condary reports the current percentage of auxiliary heating stages tumed on when the node is in the HVAC HEAT or HVAC EMERG HEAT rroce If the node is not controlling heat purrp heat output secondary is set to zero Cool output reports the current percentage of cooling stages or modulating cool tumed on If the node is controlling a heat purrp cool output reports the current percentage of compressor stages tumed when the node is in the HVAC COOL node If there is a modulating econorrizer configured econ output reports the percentage that the econorrizer darrper is opened If no econorrizer is configured econ output reports O H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 201 Table 26 LoNMARKG Open System Points Continued Engineering Units English User Address Field Name Metric or States plus Range nvounitStatus in alarm FALSE SNVT hvac status TRUE ALARM NOTIFY DISABLED e PE O To 65535 Oto FFFF InUse is used by rranagerrert node to indicate to all other management nodes that it is logged on to the Excel 10 node and that they should not try to interact with any of the Excel 10s network variables Before the management node reads or writes any network variables the management node checks nwilnUse for a zero value meaning no other management nodes are already logged on and that management node may log on to the node Then the management node writes a nurrber 1 through 65534
110. cono Enable Type No Economizer in E Vision The network input has priority over the other nine economizer control selections Appendix C Complete List of Excel 10 W7750 Controller User Addresses See Table 18 for W7750 Controller User Address table numbers and point types The User Adaress Index following Table 18 lists the User Addresses alphabetically and gives the page number where the Address is located in each Table Number Point Type After Table 18 there is an alphabetical list of Mappable User Adaresses and Table Numbers Following this is an alphabetical list of Failure Detect User Addresses and Table Numbers Table 18 Excel 10 W7750 Controller User Address Point Types Table Number Point Types Table 20 Input Output Table 21 Control Parameters Table 22 Energy Management Points Table 23 Status Points Table 24 Calibration Points Table 25 Configuration Parameters Table 26 LoNMARK Open System Points Table 27 Direct Access and Special Manual Points Table 28 Data Share Points EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER User Address Indexes all in alphabetical order Table 20 Input Output Points Address Page CO2Sensr 71 CORMode 67 DaTempSensr 70 EconEnSw 72 FitrPressSensr 70 FitrPressSensr 70 laqOvrSw 72 Model 72 ModelSw 73 MonitorSensr 71 MonitorSw 73 OaEnthSensr 70 OaHumSensr 70 OaTempSensr 70 OccSensr 72 OvrdSw 72 RaEnthSensr 70 RaHumSensr 70 RaTe
111. cupied If the node receives this combination of state and value then state is set to SW OFF If the state is SVV ON and the value is not zero the space is scheduled to be occupied If the state is or other and the value is dont care the network variable is not bound and is ignored Refer to rMTirreClk value rNoTirreClk reports the current state of the physical time clock input The output values have the following meanings If the state is SVV OFF and the value is O the tine dock input is configured and the input is open circuit If SCHEDULE MASTER is configured then the schedule master input must be shorted to ground to reach this state If the state is SVV ON and the value is 100 precent the tine clock input is configured and the input is a dosed circuit If SCHEDULE MASTER is configured then the schedule master input must be shorted to ground to reach this state If the state is SW NUL and the value is O the time clock input is not configured by Select or the SCHEDULE MASTER IN physical input is configured and the input is open nvolO ScheduleMaster O Refer to nvoTirreClk value n 2 2 H3TIOHLNOO NHY IWNTOA LNVLSNOO 04 VOSZZM OL TJOX3 SrcErrerg 8960 il ver Engineering Units English Metric or States plus Range Table 23 Status Points E Vision Legend M Monitor P Parameter S Schematic d W UOISIA 3
112. d NV are disabled as if the NV was not configured ByPassErmor All control functions associated with the failed NV are disabled as if the NV was not configured OdEnthalpyErmor All control functions associated with the failed NV are disabled as if the NV was not configured All control functions associated with the failed NV are disabled as if the NV was not configured laqOverrideError All control functions associated with the failed NV disabled as if the NV wes not configured Free1Error All control functions associated with the failed NV are disabled as if the NV wes not configured H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 23 Status Points Continued Engineering Units English Metric or States plus Range bit 3 Byte Offset 3 Bit Offset 6 rvTimeClockError bit 3 Byte Offset 3 Bit Offset 7 rAWSHPErError CFG LOCAL CFG EXTERNAL CFG NUL Engineering Units English Metric or States plus Range AilResistive Ai2Resistive Ai3voltage Ai4Noltage 912 5 jo 9n A a 10 ejels SEIS JO ONEA d W uoISIA 3 2 E Vision Legend M Monitor P Parameter S Schematic Free2Error All control functions associated with the failed NV are disabled as if the NV wes not configured TimeClockError All control functions asso
113. d cct itid AA f aa 21 13 Fan with two stages of heating and two stages oficoollng hohe t eer eit e ete quein tbe ni beri eS n ctn tete hence 24 14 Fan modulating heating and modulating cooling 24 15 Heat pump with two compressors and auxiliary heat 25 16 Economizer control edel ete Ue ec ee nime ie ERN 25 17 Modulating heat with pneumatic valve 26 18 Connecting the portable operator terminal to the LONWORKS BUS PSD EID ud 29 19 Wiring layout for one doubly terminated daisy chain LONWORKS Bus segment 31 20 Wiring layout for two singly terminated LONWORKS Bus 32 21 NEMA class 2 transformer voltage output limits 34 22 Power wiring details for one Excel 10 per 34 23 Power wiring details for two or more Excel 10s per transformer 34 24 Transformer power wiring details for one Excel 10 used UL 1995 equipment U S only 35 25 Attaching two or more wires at terminal blocks nene 36 26 W7750B High Side Low Side selectable switching and jumper location 36 27 Typical W7750A Controller AHU application wiring diagram For more information on note 2 KI TO
114. dor Wire Type m LoNWoRks 22 AWG Twisted pair solid Level IV Honeywell Refer to LONWORKS Bus Bus 0 34 mm conductor nonshielded 140 F 60 C 791 one twisted pair Wiring Guidelines for Plenum or Echelon approved rating AK3792 two twisted pairs maximum length cable LoNWoRks 22 AWG Twisted pair solid Level IV Honeywell Refer to LoNWoRks Bus Bus Non 0 34 mm conductor nonshielded 140 F 60 C 781 one twisted pair Wiring Guidelines for Plenum or Echelon approved rating AK3782 two twisted pairs maximum length cable Input 18 to 22 AWG Multiconductor usually 140 F 60 C Standard thermostat wire 1000 ft 305m for 18 Wiring 1 0 to 0 34 mm five wire cable bundle rating AWG 200 ft 61m for 22 Sensors For runs gt 200 ft 61m AWG Contacts in noisy EMI areas use shielded cable Output 14 AWG 2 0 mm Any pair nonshielded NEC Class 2 Honeywell Limited by line loss Wiring 18 AWG 1 0 mm use heavier wire for 140 F 60 AK3702 18 AWG effects on power Actuators acceptable for longer runs rating AK3712 16 AWG consumption See Line Relays short runs AK3754 14 AWG Loss subsection Power 14 AWG 2 0 mm Any pair nonshielded NEC Class 2 Honeywell Limited by line loss Wiring use heavier wire for 140 F 60 AK3754 14 AWG twisted 5 on power longer runs rating pair AK3909 14 AWG consumption See Line single conductor Loss subsection W7750 C
115. ds by management node to be compatible with a Honeywell system BYPASS ONLY e o o 9191610 JO ee xj X x sseov meia E Vision Legend Monitor P Parameter S Schematic Engineering Units English Metric or States plus Range 81215 JO NLA 10 ae 558005 10910 1599190 eunjeJ The SGPUC and SGPU tirre heart beattirre between updates of network variable outputs NOTE RtuSendT should be set to 55 seconds by rranagerrert node to be corrpatible with a Honeywell system H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 Table 26 LoNMARKG Open System Points Continued E Vision Legend Monitor P Parameter S Schematic Engineering Units English Metric or States plus Range 91615 JO NJLA 10 9 8 S The Cooling Occupied Setpoint is used if wall module setpoint pot is configured as the standard Occupied Cooling Setpoint Actual Cooling Setpoint can be affected various control pararreters such as DicShed SrcRitTenpspt Actual roomterrperature Setpoint is reflected in RmenpActSpt Overridden by rwiSetPt Used to corrpute ZEB When the controller is in the Standby mode typically an occupancy sensor the base Cooling Setpoint is deterrrined by the Cooling Standoy Setpoint value
116. e If DisableCoolMinTinre is FALSE the cooling stages are on or off for a rrinirrumtirre deterrrined by CoolCph Refer to Table 17 Interstage Minimum Times of the SystemEngineering Guide If DisableCoolMinTine is 1 TRUE the cooling stages are on or off for second minimum tire When CascadeControl is FALSE then the discharge air ten perature is not directly controlled and heating and cooling equipment are modulated to maintain space temperature When CascadeCortrol is 1 TRUE then the discharge air ten perature is controlled by an additional control loop based on the error signal fromthe space terrperature control loop Cascade Control is applicable to modulating heating cooling only not staged If ControlUsesRtnAirTerrp is O FALSE then Data2 SpaceTerrp is set equal either the space terrperature sensor IO sispaceTerrp SpaceTemp depending on the value of SpaceTerrp When CortrolUsesRtnAirTerrp is 1 TRUE and SpaceTerrpis SI INVALID then Data2 SpaceTemp is set equal to reum air sensor IO RetumiTerrp and the control uses the retum air sensor to control heating or cooling When CortrolUsesRtnAirTerrp is 1 TRUE and SpaceTemp is not SI INVALID then Data2 siSpaceTemp is set equal to SpaceTerrp and the control uses SpaceTemp to control heating or cooling When the effective occupancy is OCCUPIED and laqUseHeat is O FALSE then no heating stages or modulating heating are turned when the discharge air
117. e These points can be set up for data sharing in Command Multiple Points Read Multiple Points or Refer Excel 10 Points as either a data source or a destination Mappable These points can be converted into a C Bus point used by C Bus devices A mappable point has a one to one relationship with a C Bus User Address Direct Access These points are accessible through the Subsystem Points mechanism in XBS 74 2958 1 66 Hardware Config These are points that involve controller I O configuration Any change to Hardware Config points causes the W7750 to perform an application reset therefore these points can only be modified off line Manual Config These points are used to set the controller outputs when in manual mode The W7750 is placed in manual mode through a menu selection in the E Vision Controller Monitor Screen Test These points can be controlled in E Visions test mode that is used for field checkout debuging Failure Detect Input Point These points need an update periodically or a communication alarm is generated The failure detect mechanism is only active when the NV is bound bindings are configured using Refer Excel 10 points The time between the updates is user settable Non Failure Detect Input Point These points which are NVs that are bound or do not check for an update periodically and do not generate an alarm NOTES 1 Mapped points can be viewed and ch
118. e first stage of cooling For example if a controller was configured with two stages of mechanical cooling and an economizer the application should be viewed in Fig 50 as a three stage system Setpoints for the PID gains allow for unit by unit adjustment of the control loop if required however any change from the default values should be minimal The PID control algorithm used to control staged cooling is anticipator driven and is similar to the algorithm used in the T7300 commercial thermostat All staging events are subject to a minimum interstage time delay which is based on the cycles per hour user setting CoolCycHr The minimum interstage time delay ranges from 90 seconds at 12 cycles per hour to 8 5 minutes at two cycles per hour see Table 17 The user has the option to disable the minimum run timer DisMinCITimer for cooling If the minimum run timer is disabled the interstage time delay is fixed at 20 seconds The cycling rate is separately selectable for heating and cooling between 2 and 12 cycles per hour cph 74 2958 1 60 Table 17 Interstage Minimum Times Cycles Hour Selection Minimum On Off time Min 8 5 3 5 5 4 4 0 5 3 5 6 3 0 7 2 5 8 2 0 9 2 0 10 2 0 11 1 5 12 1 5 STAGED HEATING CONTROL The Excel 10 W7750B C Controller supports up to four stages of heating As space temperature falls below the current Cooling Setpoint the controller mode of
119. econds 7 seconds Continuous Unoccupied Override NOTES If the pushbutton is held down for longer than seven seconds the controller reverts back to No Override and repeats the cycle above See Fig 45 Continuous Occupied override mode can only be initiated remotely that is over the LONWORKS Bus network 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER RESET PRESS FOR LESS THAN ONE SECOND PRESS FOR LESS THAN ONE SECOND NOT ASSIGNED LED OFF PRESS FOR ONE TO FOUR SECONDS BYPASS OCCUPIED LED ON PRESS FOR FOUR TO SEVEN SECONDS UNOCCUPIED LED BLINK BYPASS TIMEOUT PRESS FOR MORE THAN SEVEN SECONDS M8483A Fig 45 LED and Bypass pushbutton operation STANDBY MODE StatusOcySen The digital input for an occupancy sensor usually a motion detector or possibly a time clock provides the controller with a means to enter an energy saving Standby mode whenever people are not in the room Standby mode occurs when the scheduled occupancy is Occupied and the occupancy sensor detects no people currently in the room digital input contacts Closed means people are in the room and contacts Open means the room is Unoccupied When in Standby mode the Excel 10 W7750 Controller uses the Standby Cooling Setpoint for cooling CoolStbySpt or the Standby Heating Setpoint for Heating HeatStbySpt as the Actual Space Temperature Setpoint The occupancy sensor signa
120. ective occupancy is OC OCCUPIED SetPt overrides all SetPntiKnob specifies the usage of the setpoint knob when UseW a llModStPt is TRUE When SetPni lt nob is O ABSOLUTE MIDDLE the setpoint knob directly deterrrines the center point of between the OC OCCUPIED cooling and heating setpoints When SetPntKnob is 1 OFFSET the effective setpoint is calculated by adding the rerrote setpoint potentiometer value center scale O to the appropriate value of OverrideType specifies the behavior of the override button If the OverrideType is O NONE then the override button is disabled An OverrideType of 1 NORIMAL causes the override button to set the OverRide state to BYPASS for Aux2SetPt BypassTirre seconds when the override button has been pressed for approximately 1 to 4 seconds or to set the OverRide state to UNOCC when the button has been pressed for approximately 4 to 7 seconds When the button is pressed longer than approximately 7 seconds then the OverRide state is set to If the OverrideType is 2 BYPASS ONLY the override button sets the OverRide state to BYPASS for Aux2SetPt Bypass Tire seconds on the first press On the next press the OverRide state is set to ABSOLUTE _ MIDDLE Table 26 LONMARK Open System Points rciRtuRcvT This is the failure detection tirre for network SGPUC and SGPU variables SNVT sec outputs NOTE RtuRcvT should be set to 300 secon
121. ed when the filter media needs replacement The two methods of monitoring the filter are 1 Connecting a differential pressure switch to a digital input on the W7750A or W7750B C 2 Wiring a 2 to 10V differential pressure sensor to a voltage input on the 77508 If the analog input sensor is used its measured value 0 to 5 inw 0 to 1 25 kPa is compared to a user selectable setpoint FltrPressStPt valid range 0 to 5 inw 0 to 1 25 kPa and the Dirty Filter alarm is issued when the pressure drop across the filter exceeds the setpoint Indoor Air Quality IAQ Override The Excel 10 W7750 Controller provides IAQ ventilation control using one of two different methods of detecting poor air quality The first is with an IAQ switch device connected to a digital input on the W7750 Controller where a contact closure indicates poor air quality and initiates the IAQ Override mode The device can detect poor air quality using any desired measure such as VOC CO etc The second method which is only available on the W7750B C is through an analog input that connects to a CO sensor 2 to IAQ Override is initiated The IAQSetpt hysteresis is 50 PPM IAQ Override is deactivated at a CO level less than 50 PPM below setpoint The effect of initiating the IAQ Override mode is that the economizer dampers are allowed to open above the standard minimum position setting to allow more fresh air to enter the building See Appendix B Sequ
122. el 10 W7750 Controller User Address Point Types indu Ree NO Rb etie C UE endo 62 Table 20 Input Output Polhts 3 51 nan ee pbi e etel 67 Table 21 Control Parameters issue RISQUE UB ute mE EMT 73 Table 22 Energy Management POISE sess 78 T able 23 Status Points etre Emerita metet oia eee 81 Table 24 Galibratiori PoIhts di reto eee A d xe ive DEI iM 93 Table 25 Contiguiration Parameters 3 m m Se Eo eae 94 Table 26 LONMARK Open System Points eene eene nnne nnns neret rnnt enne 97 Table 27 Direct Access And Special 2 2 4 nennen nennen nennen nett sn rns 106 Table 28 Data Share Points eee aa e adn 108 Table 29 Sensor Resistance Versus Temperature 110 Table 30 Sensor Resistance Versus Temperature nennen nnne nnne rnnt eterne tnnt neret nnne rennen 110 Table 31 Sensor Resistance Versus Temperature eene nnne nennt ntnn nen enne trennt nien rennen 111 Table 32 Sensor Resistance Versus Temperature ns 111 Table 33 Sensor Resistance Versus Temperature 111 Table 34 Sensor Voltage Versus Humidity L 112 Table 35 Sensor Voltage Versus Humidity a a aaa aE a
123. ely selectable for heating and cooling between two and 12 cycles per hour cph Setpoints for the PID gains allow for unit by unit adjustment of the control loop if required however any change from the default values should be minimal CASCADE CONTROL OF MODULATING COOLING HEATING The Excel 10 W7750 Controller supports modulating cooling and heating valves These valves can be controlled directly from the space temperature like the staged control or if the CascCtrl flag is set they are modulated to maintain the discharge air temperature at its setpoint The discharge air setpoint is calculated based on the space temperature deviation from the space setpoint This is commonly called cascade control In the W7750 Controller cascade control is available for use with PWM W7750B C only and Series 60 modulating heating and cooling but not for use with staged heating cooling Setpoints for the PID gains and for the control band allow for unit by unit adjustment of the control loops if required however any change from the default values should be minimal Also the W7750 Controller uses an adaptive algorithm patent pending to continuously assess the validity of the calculated discharge setpoint and adjust it as needed to ensure precise accurate control SERIES 60 MODULATING CONTROL Series 60 Control is also commonly referred to as Floating Control The Excel 10 W7750A B C Controllers can drive Series 60 type actuators to contr
124. en the discharge air falls below LowLirritDischAirTerrp the mechanical cooling cycles off after the rrinirrurmrun tines are obeyed to allow the dampers to retum open and provide free cooling DaTempHiLim ndiAux1SetPt siMaxDisAirTenpHeatS 7 When the mode is HEAT and the CascadeControl is enabled the discharge air terrperature is controlled to a value not to exceed 156 5 0 7 When DicShed is not O then the setpoint is shifted in the energy saving direction When DicShed changes from 1 to the setpoint shift rarrps back to O over a 30 minute interval OaTerrpH nciAuxdSetPt UubOdHtLockOutTen pst 70 When the outdoor air ten perature is greater than bear ockOutTerrp the heating is disabled NE H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 N Table 21 Control Parameters Continued 9 E Vision Legend IM Monitor P Parameter S Schematic g NE 2 2 2 5 2 8 o wo gt 0 s 7 Engineering Units English e T 21515 User Address NvName Field Name Metric or States plus Range g MaxHtRanp ndALX1setPt ubMaxHtRanpSO MaxHtRarrp is the naxinumbheat recovery ranp rate in degrees F per hour This value is used to control the adaptive recovery rarrp rate during the HEAT recovery period The setpoint is changed ata rate in degrees F pe
125. ences of Operation for further control details Smoke Control The Excel 10 W7750 Controller supports smoke related control strategies that are initiated either via a network command DestEmergCma or from a local physically connected smoke detector digital input The details of the W7750 smoke related control operation are described in Appendix B Sequences of Operation Freeze Stat A freeze stat can be monitored by the W7750 and issue a freeze stat alarm indicating the CVAHU is in danger of freezing its coil The details of the W7750 freeze stat related control operation are described in Appendix B Sequences of Operation 10V The measured value of CO from this sensor 0 to 2000 PPM is compared to the setpoint IAQSetpt When the CO level is higher than the setpoint 800 PPM adjustable the Modes of Operation The possible modes of operation for the W7750 Controller are listed in Table 5 Table 5 Modes Of Operation For The Excel 10 W7750 Controller Mode Description Events causing a controller to switch to this mode Effective Occupancy User Address StatusOcc OCCUPIED Controller is in Occupied mode Any of the following Network input DestSchedOcc containing a time of day schedule flag from either the Excel 10 Zone Manager or an LONWORKS Bus Controller Time Clock DI Occupancy Sensor or from Network input DestManMode for manual override to OCC mode DestManMode has the highest priority fol
126. es the noise picked up by analog switch wiring fromthe power mains When FiftySixtyHz is SIXTY is the default the rrains frequency is sixty Hz and when FiftySixtyHz is 1 FIFTY the rreins frequency is fifty Hz SpaceSensorType specifies the type of space terrperature sensor connected to the node SpaceSersorType is a T7770 sensor is connected to the sensor terrrinals No other options are currently valid SetPointTemp is the wall module setpoint terrperature When rciConfig SetPointTerrp is ABSOLUTE COOL or ABSOLUTE MIDDLE the reported value is the absolute setpoint terrperature When Config SetPntKnob is OFFSET the reported value is the offset fromthe current active TerrpSetPts tenperature If the input is not configured or has failed the value is SI INVALID SpaceTemp is the measured space terrperature If the sensor is not configured or has failed the value is SI INVALID NOTE The reported terrperatures includes the offset correction provided Config ResistiveOffsetCal DischargeTerrp is the measured discharge air ten perature If the sensor is not configured has failed the value is SI INVALID Refer to the note on SpaceTerp RetumTemp is the measured reum air tenperature If the sensor is not configured has failed the value is Sl INVALID Refer to the note on SpaceTerrp RetumHunidity is measured return air humidity If the sensor is not configured or has failed the value is UB_INVALID NO
127. etPt siKiHeatSO x This is the integral portion of the loop gain for the heating control loop GainCoolDer ndALa2setPt siKdCoolSO Seconds x This is the derivative portion of the PID loop gain for the cooling Oto 9000 control loop GainHeatDer 2 siKdHeatSO x This is the derivative portion of the PID loop gain for the heating 9000 control loop DaTerrpCICtriBd NiAvZSetPt ubDisCbCoolSO 10 DisCbCool is the throttling range used for the cooling portion of the ea discharge air terrperature cascade control loop DaTerrpHtCtiBd 25 ubDisCbHeatSO 10 DisCbHeat is the throttling range used for the heating portion of the Erde discharge air terrperature cascade control loop EET Fe 30 loop H3TIOHLNOO NHY IWNTOA LNVLSNOO 04 VOSZZM OL TJOX3 8960 Field Table 22 Energy Management Points Engineering Units English Metric or States plus Range E Vision Legend M Monitor P Parameter S Schematic SS999y 1290 jenuey 1 91216 ONEA Jo ejes jeubig S d W uoisiA 3 DestDicShed rMDicShed Oto1 x i i i O the terrperature control algorithmoperates in a nomal mode When DicShed is non zero the setpoint is shifted Aux1SetPtDIcBurrpTerrp in the energy saving direction mM TodEvert OC OCCUPIED OC UNOCCUPIED OC BYPASS OC STANDBY OC NUL OC
128. etween the field in nvoData and nvoCuDataG is calculated If the difference is significant the field is updated according to the SGPUC mechanism FieldNo indicates which other data field in the SGPUC network variable has changed since the last tine it was sent on the network according to the SGPUC mechanism If FieldNo is UPDATE ALL FIELDS then all fields have been updated If FieldNo is UPDATE_NO_FIELDS then no fields have been updated recently REREEH BRS SNAUAWNHO 2 5 5 v 2 H3TIOHLNOO NHY IWNTOA LNVLSNOO 2 VOSZZM OL TJOX3 N Table 23 Status Points Continued 9 E Vision Legend M Monitor P Parameter S Schematic 2 Engineering Units English User Address Field Name Metric or States plus Range StatusMode nvoDatal START UP WAIT UP Mode The result of the controller deterrrining which mode of operation it nvoCtDataG1 HEAT currently is in At each power up the controller remains in the Start Up and COOL Wait mode a randomtine fromO to 20 minutes that is based on the units OFF MODE network nurrber After that period the mode changes to initialize actuators DISABLED MODE that wll fully close the darrper and valve actuators to insure full travel when EMERG HEAT under programcontrol The various other modes are due to nomal SMOKE EMERGENCY operation as well as manual and network commands FREEZE PROTECT MANUAL FACTORY TEST FAN ONLY StatusOcc nvoDatal
129. f the node If SetPoint is not SI INVALID then itis used to detemine the control point of the node If SetPoint is SI INVALID then other rrears are used to deterrrine the control point See Data2 TenpControlPt for more information SetPtOffset is input froman operator terrrinal or froman energy rranagerrert system used to shift the effective terrperature setpoint adding SetPtOffset to the otherwise calculated setpoint If the value is outside the allowed range of 10 to 430 degrees C 18 to 18 degrees F then the node uses the value of the nearest range limit EffectSetPt is the current temperature control point such that the current actual space terrperature setpoint which the controller is presently trying to maintain in the conditioned space See Data2 TerrpControlPt for more details EffectSetPt is updated according to the SGPU rrechanismwh ere a significant change is plus or minus 0 07 degrees C 0 13 degrees F H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 26 LoNMARKG Open System Points Continued Default Engineering Units English Metric or States plus Range LL E gt 44 POM 91615 JO NJLA 101216 SX SI INVALID 5 49 2 INVALID SI INVALID Degrees F 4Oto 122 Degrees C 4
130. figured for modulating econorrizer sbEconPosSO shows the current position of the economizer modulating For SpaceTerrpErmor a value of 1 TRUE indicates that data wes not available fromthe sensor and will result ina SENSOR FAILURE alarm A value of O FALSE indicates normal condition The heating and cooling control loops wil be tumed off it there is a space tenp sensor failure The fan will rerrain under norrral control For SetPtError see preceding Upon a failure of the local setpoint the control loop will use the default occupied setpoints to control space N Table 23 Status Points Continued m on m E s Engineering Units English 0 cz User Address Field Name Metric or States plus Range E rwoCtiDataG2 siMonitor1S10 SI INVALID 10 CoolPos rvoCtiDetaG2 sbCoolPosSO ae 100 sbHeatPosSO SIG 100 rvoCHDataG sbEconPosSO pea 100 Byte Offset O Bit Offset 4 lt 5 3 x 2 For OdTenpe nor see preceding All control functions associated with the failed sensor are disabled as if the sensor was not configured For OdHunEror see preceding A value of O FALSE indicates normal condition All control functions associated with the failed sensor are disabled as if the sensor was not configured OdEnthalpyErmor All control functions associated with the failed sensor are disabled as if the sensor was not configured Di
131. four models The T7770 Wall Modules will work with all Excel 5000 and Excel 10 Controllers except the W7751A C E G T7770A1xxx Wall Module with nonlinearized 20 Kohm NTC sensor only T7770A2xxx Wall Module with nonlinearized 20 Kohm NTC sensor and LONWORKS Bus jack T7770B1xxx Wall Module with nonlinearized 20 Kohm NTC sensor 10 Kohm setpoint and LONWORKS Bus jack T7770C1xxx Wall Module with nonlinearized 20 Kohm NTC sensor 10 Kohm setpoint bypass button and LED and LONWORKS Bus jack T7770D1xxx Wall Module with nonlinearized 20 Kohm NTC sensor bypass button and LED and LONWORKS Bus jack NOTE The T7770B C Models are available with a absolute 55 to 85 F 10 to 85 or a relative scale plate adjustable in E Vision to 18 F 5 C The T7560A B Wall Module is available in two models T7560A Wall Module displays and provides space temperature setpoint Occ Unocc override override status LCD and digital display T7560B Wall Module displays and provides space temperature humidity sensor setpoint Occ Unocc override override status LCD and digital display Other products e Q7750A Excel 10 Zone Manager Q7751A B Bus Router Q7752A Serial Adapter Q7740A B FTT Repeaters 209541B FTT Termination Module Refer to Table 11 in Application Step 5 Order Equipment for a complete listing of all available part numbers NOTE The Q7750A Zone Manager is referred to as E Link in interna
132. fset 3 DigitalOut4 ubOut Byte Offset 24 Bit Offset A DigitalOut5 ubOut Byte Offset 24 Bit Offset 5 DigitalOut6 ubOut Byte Offset 24 Bit Offset 6 DigitalOut7 ubOut Byte Offset 24 Bit Offset 7 DigitalOuts ubDigitalln Byte Offset 25 Bit Offset 7 Digitalln1 ubDigitalln Byte Offset 25 Bit Offset amp Digitalln2 Table 20 Input Output Points Continued d W uoISIA 3 Engineering Units English Metric or States plus Range 1019 10 n PA Jo ee eybi SI INVALID SI INVALID c pl j jJ x lj T U E Vision Legend M Monitor P Parameter S Schematic SpaceCo2 is the measured CO2 in the conditioned air space If the sensor is not configured has failed the value is SI INVALID Refer to the NOTE on RetumHurridity Monitor is the voltage applied at the monitor inputs terrrinals If the sensor is not configured or has failed the value is SI INVALID Refer to the NOTE on RetumHurridity DigitalOut1 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut2 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut3 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut4 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOutS is a by
133. further refinements can made as needed until the system is operating as desired N CAUTION If large or frequent changes to PID control parameters are made it is possible to cause equipment problems such as short cycling compressors if the stage minimum run times were disabled in User Addresses DisMinClTime or DisMinHtTime Other problems that can occur include wide swings in space temperature and excessive overdriving of modulating outputs If adjustment of PID parameters is required use the following In the items that follow the term error refers to the difference between the measured space temperature and the current actual space temperature setpoint The Proportional Gain also called Throttling Range determines how much impact the error has on the output signal Decreasing the Proportional Gain amplifies the effect of the error that is for a given error a small Proportional Gain causes a higher output signal value The Integral Gain also called Integral Time determines how much impact the error over time has on the output signal Error over time has two components making up its value the amount of time the error exists and the size of the error The higher the Integral Gain the slower the control response In other words a decrease in Integral Gain causes a more rapid response in the output signal 74 2958 1 52 The Derivative Gain also called Derivative Time determines how much impact the error
134. g at 78 kilobits per second kbps Using the transformer coupled communications interface offers a much higher degree of common mode noise rejection while ensuring dc isolation 74 2958 1 16 Approved cable types for LONWORKS Bus communications wiring is Level IV 22 AWG 0 34 mm plenum or nonplenum rated unshielded twisted pair solid conductor wire For nonplenum areas use Level IV 22 AWG 0 34 mm such as U S part AK3781 one pair or U S part AK3782 two pair In plenum areas use plenum rated Level IV 22 AWG 0 34 mm such as U S part AK3791 one pair or U S part AK3792 two pair See Tables 9 and 11 for part numbers Contact Echelon Corp Technical Support for the recommended vendors of Echelon approved cables EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Fig 8 DIN rail adapters The FTT supports polarity insensitive free topology wiring This frees the system installer from wiring using a specific bus topology T tap star loop and mixed wiring topologies are all supported by this architecture The maximum LONWoRKS Bus length when using a combination of T tap star loop and bus wiring singly terminated is 1640 ft 500 with the maximum node to node length of 1312 ft 400m In the event that the total wire length is exceeded then a Q7740A 2 Way Repeater or a Q7740B 4 Way Repeater can be used to allow the number of devices to be spread out as well as increasing the length of wire over which t
135. ge rather than dc voltage VAV Variable Air Volume refers to either a type of air distribution system or to the W7751 Excel 10 VAV Box Controller that controls a single zone in a variable air volume delivery system VOC Volatile Organic Compound refers to a class of common pollutants sometimes found in buildings Sources include out gassing of construction materials production line by products and general cleaning solvents A VOC is occasionally used as a measure of indoor air quality W7750 The model number of the Excel 10 CVAHU Controllers also see CVAHU W7751 The model number of the Excel 10 Box Controllers also see VAV Wall Module The Excel 10 Space Temperature Sensor and other optional controller inputs are contained in the T7770 or the T7560A B Wall Modules See Application Step 5 Order Equipment for details on the various models of Wall Modules XBS Excel Building Supervisor a PC based tool for monitoring and changing parameters in C Bus devices Construction Controllers The Excel 10 W7750 Controller is available in three different models The W7750A Model which is a low cost controller made for simple single zone air handlers and heat pump controls The W7750B C Models are intended for more complex applications The W7750B C Models use Triacs for their digital outputs where as the W7750A Model uses dry contact relays The W7750C Model also has three analog outputs available on termina
136. gerant reversing valve and up to four stages of auxiliary heat Note that the W7750A Model has six digital outputs and therefore with one DO used for the supply fan and one for the change over relay there are four outputs available for any combination of compressors and auxiliary heat stages The W7750B Model offers two additional DOs for a total of eight while the W7750C Model offers five DOs and 3 AOs Fig 15 illustrates a typical heat pump system with auxiliary heat EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER SHARED AUXILIARY HEAT AND HEAT COOL STAGE S DISCHARGE AIR COMPRESSOR AND CHANGEOVER VALVE CHANGEOVER UVVUVUVVUUVUVVVMI EXCEL 10 CVAHU T7560A B OR T7770 W7750A B C lololojolololololololololololo IO M17493 Fig 15 Heat pump with two compressors and auxiliary heat stage s PWM OR SERIES 60 FLOATING MOTOR RETURN AIR EXCEL 10 CVAHU W7750A B C lololololoblololololololololo UVVVUVUUUVVUVVUMI ECONOMIZER CONTROL Economizer control is available concurrently with any configuration in the W7750 when DOs are not all used by the heating and cooling equipment Two types of economizer controls are supported by the W7750 Controller modulating control and enable disable control Modulating control can be either Series 60 Floating Control or PWM control
137. hers are invalid RQ NORMAL RQ DISABLED RQ UPDATE STATUS RQ SELF TEST RQ UPDATE ALARM RQ REPORT MASK RQ OVERRIDE RQ ENABLE OVERRIDE RQ CLEAR STATUS CLEAR ALARM RQ NUL U When object request is NORMAL or RQ_UPDATE STATUS then the status Status will be reported for the object addressed by object id When object requestis REPORT MASK then the status bits will be reported that are supported in nvoStatus by the object addressed by object id Bits that are supported by the object are set to one All other object request items are not supported at this time and will retum an invalid request Status in the object status Ws LL o 5 5 5 5 mie H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 Table 26 LoNMARK Open System Points Continued E Vision Legend IM Monitor P Parameter S Schematic Engineering Units English Metric or States plus Range S d W uoisiA 3 66 8960 AUTO HEAT WRMUP COOL NIGHT PURGE PRE COOL OFF HVAC TEST EMERG HEAT FAN ONLY OC OCCUPIED OC UNOCCUPIED OC BYPASS OC STANDBY OC NUL Degrees F 50to 95 Degrees C 1010 35 SE 55 e 2
138. hey communicate The maximum number of repeaters per segment is one on either side of the router Q7751A B LONWORKS Bus Router can also be used to effectively double the maximum LonWorks Bus length The advantage of using the router is that it segregates traffic to a segment while when using the repeater all traffic is repeated on each segment When utilizing a doubly terminated LONWoRKS Bus structure use a continuous daisy 17 chain with no stubs or taps from the main backbone The maximum LONWORKS Bus length is 4593 ft 1400m with the maximum node to node length of 3773 ft 1150m FTT networks are very flexible and convenient to install and maintain but it is imperative to carefully plan the network layout and create and maintain accurate documentation This aids in compliance verification and future expansion of the FTT network This also keeps unknown or inaccurate wire run lengths node to node device to device distances node counts total wire length inaccurate repeater router locations and misplaced or missing terminations minimized Refer to LoNWORKkS Bus Wiring Guidelines form 74 2865 for complete description of network topology rules LoNMARK8 FUNCTIONAL PROFILE W7750 Controllers support the LONMARK Functional Profile number 8030 Roof Top Unit Controller version 1 0 see Fig 9 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Hardware Output Roof Top Unit Controller number 8
139. ilter via the naO DirtyFilter digital input or the nvoDetal siFilterPressureS 10 analog input If nvoDatal siFilterPressureS 10 exceeds NdAW2SeEPt ubF ilterPressStPtS5 a dirty filter is indicated DirtyFilter is set to 1 when a dirty filter has been detected by either method for one rrinute DirtyFilter is set to O when dirty filter has not been detected by either rrethod for one rrinute When DirtyFilter is 1 a DIRTY FILTER alarmis generated ShutDown ShutDown indicates the state of the ShutDown input via nvolO ShutDown 1 means ShutDown is being commanded and means operation StatFreezeStat StatFreezeStat gives the state of the cooling coil controlled bythe CVAHU False O itis notfreezing or True 1 itis freezing NOTE Only use this User Address when using E Vision MonSwitch MonSwitch is the state of the digital input wired to a general purpose monitor switch nvolO MonSwitch 1 mears that the switch is closed and O means that the switch is open H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 uiBypassTirrer The time left the bypass tiner is uiBypassTirrer minutes If uiBypassTirrer is zero then the bypass tirrer is not running If uiBypassTirrer is not zero it is decremented every rrinute nvoData2 i rwoCtiDataG2 ot to dere RrmrilerrpActSpt nvoData2 SI INVALID nvoCtDataG2 to Degrees C 1Oto 29 Rmierrp nvoData2 SI INVALID rvoCtiDataG2 siTerrpControlPt
140. in Part 15 rules for a Class A Computing Device Operation in a residential area can cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference Q7740A B FTT UL 1011784 Repeaters Q7751A B Routers and Q7752A Serial Adapter CSA Listed FCC with requirements in Part 15 rules for a Class B Computing Device 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Abbreviations and Definitions AHU Air Handling Unit the central fan system that includes the blower heating equipment cooling equipment ventilation air equipment and other related equipment CO Carbon Monoxide Occasionally used as a measure of indoor air quality Dioxide Often used as a measure of indoor air quality CARE Computer Aided Regulation Engineering the PC based tool used to configure C Bus and LONWORKS Bus devices C Bus Honeywell proprietary Control Bus for communications between EXCEL 50009 System controllers and components CPU Central Processing Unit an EXCEL 5000 OPEN SYSTEM controller module cUL Underwriters Laboratories Canada CVAHU Constant Volume AHU refers to a type of air handler with a single speed fan that provides a constant amount of supply air to the space it serves DDF Delta Degrees Fahrenheit D X Direct Expansion refers to a type of mechanical c
141. ing Units English Metric or States plus Range EMERG NORMAL EMERG PRESSURIZE EMERG DEPRESSURIZE EMERG PURGE EMERG SHUTDOVWN EMERG AUTO HEAT WRMUP COOL NIGHT PURGE PRE COOL OFF HVAC TEST HVAC EMERG HEAT FAN ONLY NUL 91215 Jo enjeA Jo 9jejs eyfa HVAC S W uo SIA 3 x 559001 10910 jenuey _ 4 x s RE J j 11214 pq Ei e rr pc nni When the fan is running fan outputis 100 percent and when the fan is not running fan output is percent 109190 ane E Vision Legend Monitor P Parameter S Schematic Errerg is an emergency input froma device that deterrrines the correct action during a given errergency such as a fire If Errerg is EMERG NORMAL the fan and economizer are controlled by the heating and cooling control algorithm If Energ is EMERG_PRESSURIZE then the fan is controlled on and the economizer darrper is open If Energ is EMERG DEPRESSURIZE then the fan is controlled on and the economizer damper is closed If Energ is EMERG_SHUTDOWN then the fan is controlled off and the economizer is dosed If Errerg is EMERG_PURGE the fan and dan per go to the state specified by Config SrrokeControl If Energ is not configured then it is set to EMERG N
142. ing valves and economizers There are no PWM outputs configurable on the W7750A model For projects with existing pneumatically actuated reheat valves the Excel 10 W7750 Controller output must be converted to a pneumatic signal using a transducer device developed for use with Excel 10 Controllers The transducer is 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER available through Honeywell or directly from the manufacturer Mamac Systems see Table 11 for ordering information Fig 17 depicts a typical W7750 System with modulating heating valve using a pneumatic valve actuator Also see Fig 36 for wiring an MMC325 Pneumatic Transducer to a W7750A B C Controller and Fig 37 for wiring a RP7517B Pneumatic Transducer to a W7750C Controller NOTE When choosing the pneumatic pressure range make sure that the close off pressure is 2 to 3 psi greater than that of the spring range When using a spring range of 5 to 10 psi with 10 psi as the closed posi tion do notuse the 0 to 10 psi model of the MMC325 Transducer use the 0 to 20 psi transducer as the recommended selection MIXED AIR FAN STARTER n n HEAT COIL PNEUMATIC ACTUATOR PNEUMATIC MAIN OR BRANCH LINE MUST BE 1 4 IN 6 MM OR LARGER TUBING A MINIMUM OF 6 FT 1 8M OF TUBING IS NEEDED IN A BRANCH LINE M17495 PNEUMATIC TRANSDUCER Fig 17 Modulating heat with pneumatic valve actuator MIXED OU
143. ir terrperature used by the control process read fromthe local sensor via nvolO siReturriTerrpS7 If the sensor has failed or is not configured siRetumTenpS7 is SI INVALID ubRetumHurridityS1 ubRetumHurridityS1 is the retum air hurridity used by the control process and is read fromthe local sensor mvolO RetumHunidity If the sensor has failed or is not configured ubRetumHurriditys1 is UB INVALID siRetumEnthalpyS 7 siRetumEnth alpyS7 is the retum air enthalpy used the control process and is read fromthe local sensor nvolO siRetumeEnthalpyS 7 If the sensor has failed or is not configured siRetumEnthalpyS7 is 5 INVALID siOutcoorTerrpS 7 siOutdoorTerrpS7 is the outdoor air terrperature used by the control process and is read fromanother node rviOdTerrp or the local sensor via rvolO siOutdoorTerrpS7 If the network input is not SI INVALID then the network input has priority If both the network input and the local sensor have failed or are not configured siOutdoorTenpS 7 is SI INVALID ubOutcoorHurridityS1 ubOutdoorHunidityS 1 is the outdoor air hurridity used by the control process and is read from another node nviOdHum or the local sensor nvolO OutdoorHumidity If the network is not SI INVALID then the network input has priority If both the network input and the local sensor have failed or are not configured UubOutdoorHunidityS1 is UB INVALID siOutdoorEnthalpyS 7 siOutdoorEnthalpyS 7 is the outdoor
144. is used to detemine the suitability of outside air for cooling when nciConfig EconEnable is DIFF ENTH and both outdoor and retum or space terrperature sensors and hurridity sensors are present Sensors rray be physically connected to the node or available over the network H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 98 Table 23 Status Points Continued Engineering Units English Metric or States plus Range rvoDatal HeatStagesOn HeatStagesOn indicates how many heating stages are on rwoCtiDataG1 If the node is controlling a heat purrp HeatStagesOn indicates how many E Vision Legend M Monitor P Parameter S Schematic 91615 JO enjeA 10 ejels SS929y 1290 auxiliary heating stages turned on CoolStgsOn nvoDatal CoolStagesOn CoolStagesOn indicates how many compressor stages are rwoCtiDataG1 on If the node is controlling a heat purrp compressor stages are tumed on for both heating or cooling Free1Stat rvoDatal FreelOut FALSE FreelOut FreelOut indicates the state of FREE1 OUT digital output 1 rvoCtiDataG1 on and off 0 FALSE Free2Out Free2Out indicates the state of FREE2 OUT digital output 1 EE on and off rwoDatal OccStatusOut OccStatusOut OccStatusOut indicates the state of the rvoCtiDataG1 OCCUPANCY STATUS OUT digital output 1 rreans on not
145. isabled field is not supported and is setto O FALSE unless obj request Reguestobject request is REPORT MASK then disabled and in_alarmare set to 1 TRUE to indicate that these functions are supported while all other fields are set to FALSE nvoStatus out of limits FALSE The out of lirrits field is not supported and is setto O FALSE SNVT obj request TRUE 1 nvoStatus open circuit PA FALSE The open circuit field is not supported and is setto O FALSE obj request nvoStatus out of service The out_of_service field is not supported and is set to O FALSE SNVT obj request nwvoStatus rrechanical fault FALSE The rrechanical fault field is not supported and is set to FALSE SNVT request nvoStatus feedback failure FALSE The feedback failure field is not supported and is set to FALSE SNVT obj request 5 range FALSE The over range field is not supported and is set to FALSE SNVT obj request OE HT E Re H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 60 8960 Table 26 LoNMARK Open System Points Continued m Engineering Units English User Address NvName Field Name Metric or States plus Range lt 2 s 5 29 2 5 electrical fault FALSE FALSI SNVT_obj_request TRUE nvoStatus unable to rreasure m FALSE SNVT obj request rwoStatus corrm failure FALSE SNVT obj request
146. l can also be a network input from another LONWORKS Bus device so that no physical sensor is required at the receiving W7750 Controller IMPORTANT When the W7750 Controller is in Standby mode the economizer minimum position setting is not observed This means the fresh air dampers will go fully closed if there is no call for cooling CONTINUOUS UNOCCUPIED MODE This mode is entered when a wall module is configured with a Bypass pushbutton that was pressed for four to seven seconds causing the wall module LED LCD to blink This mode can also be entered via a network command ManualOcc set to Unoccupied If the controller is in this mode it reverts to the Unoccupied setpoints for temperature control and the economizer does not observe its minimum position setting The controller remains in this mode indefinitely until the Bypass pushbutton is pressed to exit the mode or a network command is sent to clear the mode A configuration parameter is available to disable wall module initiation of Continuous Unoccupied mode OvrdType 74 2958 1 56 OCCUPANCY MODE AND MANUAL OVERRIDE ARBITRATION The W7750 has multiple sources for occupancy schedule information and therefore it employs an arbitration scheme to determine the current actual mode Time of day TOD schedule status comes from two sources a configured digital input for OccTimeClock or the DestSchedOcc network input received from a central control If the digital input source is c
147. l cooling depending on the relationship between calculated outdoor enthalpy and OdEnth alpyEnable If Config EconEnable is DIFF TEMP and return air terrperature minus outdoor air terrperature is greater than DiffEconEnableTerrp then outdoor air is judged suitable to augment mechanical cooling H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 9 Table 21 Control Parameters Continued Engineering Units English User Address Field Name Metric or States plus Range OaEnthEn ndiAux1SetPt ubOdEnthalpyEnables2 x x If Config EconEnable is SINGLE_ENTH and calculated outdoor Oto 65 enthalpy is less than OdEnthalpyEnable and outdoor terrperature is less than OdEconEnableTerrp then outdoor air is judged suitable to augrrert rrechanical cooling AN Pee Percentage rrinimumallowed position of the economizer for HEAT Pee iue 100 COOL is EconMinPos a 1 _ Percertage The control overrides the economizer darrper to EconlagPos when Oto 100 poor indoor air quality is detected 5 siCO2laqLinitSO When an analog CO2 sensor is configured and the sensed CO2 is greater than 2 then poor indoor air quality is detected and Datal OverRide is set to 1 When the sensed CO2 is less than CO2ladqL irrit then the indoor air quality is considered acceptable and Datal lagOverRide is set to oDetal lacOverRide is
148. l software and CARE Agency Listings Table 1 provides information on agency listings for Excel 10 products Be sure to always follow Local Electrical Codes Table 1 Agency Listing Device Agency W7750A B C Controllers UL Comments Tested and listed under UL916 file number E87741 The CVAHU W7750A B C Controllers are UL94 5V listed and suitable for plenum mounting cUL Listed E87741 EN 61000 4 2 EN 50140 EN 50204 EN 61000 4 4 EN 55022 CISPR 22 CE General Immunity per European Consortium Standards EN50081 1 CISPR 22 Class B and EN 50082 1 1992 based on Residential Commercial and Light Industrial IEC 1000 4 2 IEC 801 2 Electromagnetic Discharge IEC 1000 4 3 IEC 801 3 IEC 1000 4 4 IEC 801 4 Electrical Fast Transient Burst Radiated Emissions and Conducted Emissions 1987 Class B 1985 Radiated Electromagnetic Field FCC with requirements in Part 15 rules for a Class B Computing Device Operation in a residential area can cause interference to radio or TV reception and require the operator to take steps necessary to correct the interference T7770A B C D and UL T7560A B Wall Modules Not applicable cUL applicable FCC Not applicable Q7750A Excel 10 Zone Manager UL Tested and listed under UL916 file number 54804 PAZY CSA Listing pending FCC with requirements
149. le See the Data1l EffectOcc and Data1 OverRide for more details The valid states are as follows If the state is SVV ON and the value is not zero then the node should bypass the tine of day schedule subject to Occupancy arbitration logic If the state is SVV NUL the input is not available because it is not bound the input is no longer being updated by the sender or BYPASS is no longer being called This means that the sarre as SW OFF If the state is SV OFF or other and the value is don t care the node should not bypass the time of day schedule If the state is SW and the value is O then the node should not bypass the time of day schedule If the node receives this combination of state and value then state is set to SW OFF is the Current occupancy state of the node for bypass schedule The states have the following meanings If the state is SW OFF and the value is O then Data EffectOcc is not OC BYPASS If the state is ON and the value is 100 percent then Data1l EffectOcc is BYPASS Refer to nvoBypass value 1 2 3 255 1 255 1 255 H3TIOHLNOO NHY IWNTOA LNVLSNOO 04 VOSZZM OL TJOX3 6 8960 Table 22 Energy Management Points Continued Engineering Units English User Address Field Name Metric or States plus Range E Vision Legend M Monitor P Parameter S Schematic 1019 10 ONLA 10 ee 5
150. ler one for a given load Fig 21 shows this voltage load dependence In the preceding x R loss example even though the controller load is only 37 VA a standard 40 VA transformer is not sufficient due to the line loss From Fig 21 a 40 VA transformer is just under 100 percent loaded for the 37 VA 33 controller and therefore has a secondary voltage of 22 9 volts Use the lower edge of the shaded zone in Fig 21 that represents the worst case conditions When the x R loss of four volts is subtracted only 18 9 volts reaches the controller which is not enough voltage for proper operation In this situation the engineer basically has three alternatives 1 Use a larger transformer for example if an 80 VA model is used see Fig 21 an output of 24 4 volts minus the four volt line loss supplies 20 4V to the controller Although acceptable the four volt line loss in this example is higher than recommended See the following IMPORTANT 2 Use heavier gauge wire for the power run 14 AWG 2 0 mm wire has a resistance of 2 57 ohms 1000 ft which using the preceding formula gives a line loss of only 1 58 volts compared with 4 02 volts This would allow a 40 VA transformer to be used 14 AWG 2 0 mm wire is the recommended wire size for 24 Vac wiring 3 Locate the transformer closer to the controller thereby reducing the length of the wire run and the line loss The issue of line loss is also important in the c
151. ler to the local controller or by receiving the STANDBY mode signal via the LONWORKS Bus NOTE The Excel 10 Controller has limited power available only 9 mA at 4 8 volts for checking the digital inputs for contact closures It is very important that the device used contains high quality noncorroding contacts with resistivity that does not degrade that is increase over time Use noble metal such as gold or silver or pimpled or sealed contacts to assure consistent long term operation The recommended devices for use with the Excel 10 W7750 Controllers are the EL7628A1007 Ceiling Mounted Infrared or the EL7680A1008 Wall Mounted Wide View Infrared Occupancy Sensors If ultrasonic sensors are required the EL7611A1003 and the EL7612A1001 Occupancy Sensors are recommended An EL76XX Power Supply Control Unit is required for use with these occupancy sensors The EL7630A1003 can power up to four sensors and is multi tapped for several line voltages The EL7621A1002 power three sensors and it connects to 120 Vac line voltage The EL7621A1010 can also power three sensors but it connects to 277 Vac line voltage Window Open Closed Digital Input A digital input is also provided for detecting whether a window in the space was opened The Excel 10 W7750 Controller can be connected to a dry contact see the following NOTE and Fig 27 through 35 in Application Step 4 Prepare Wiring Diagrams for details or a set of contacts wired in serie
152. ll Modules 7560 Wall Modules Q7750A Excel 10 Zone Manager Q7751A B Router FTT to FTT and TPT to FTT Q7752A Serial Interface Q7740A B Repeaters 2 way and 4 way 209541B FTT Termination Module Organization of Manual This manual is divided into three basic parts the Introduction the Application Steps and the Appendices that provide supporting information The Introduction and Application Steps 1 through 5 provide the information needed to make accurate material ordering decisions Application Step 6 and the Appendices include configuration engineering that can be started using Excel E Vision PC Software after the devices and accessories are ordered Application Step 7 is troubleshooting The organization of the manual assumes a project is being engineered from start to finish If an operator is adding to or is changing an existing system the Table of Contents can provide the relevant information Applicable Literature The following list of documents contains information related to the Excel 10 W7750 CVAHU Controller and the EXCEL 50009 SYSTEM in general 74 2958 1 8 Form No 74 2956 74 2697 74 3097 74 2950 74 2952 74 2954 74 3067 74 2858 74 2951 95 7521 95 7538 95 7620 95 7509 95 7510 95 7511 95 7613 95 7555 95 7554 74 2588 74 5587 74 1392 74 5577 74 2039 74 5018 Title Excel 10 W7750A B C Controller Specification Data Excel 10 T77
153. lowed by the Time Clock DI and then DestSchedOcc STANDBY Controller is in Standby mode Either A Network input DestSchedOcc containing time of day schedule flag from the Excel 10 Zone Manager or other LONWORKS Bus node is STANDBY or B Network input DestSchedOcc is OCCUPIED and the Occupancy Sensor DI is UNOCCUPIED Network input DestSchedOcc containing time of day schedule flag from the Excel 10 Zone Manager or LONWORKS Bus or the network input DestManOcc has a value of UNOCCUPIED Controller is in Occupied mode through This mode is derived from the schedule occupancy DestSchedOcc a Bypass command having a state of UNOCCUPIED and a manual request for occupancy from one of three sources Two of these are signals originated external to the unit and received by DestManOcc and DestBypass The third source for an occupancy request is from an override button located on a wall module These three sources are arbitrated in a scheme determined by the configuration parameter Network Wins or Last in Wins from OvrdPriority UNOCCUPIED Controller is in Unoccupied mode BYPASS OCCUPIED Override Modes User Address StatusOvrd OCCUPIED Controller occupancy mode was Network input DestManOcc containing a time of day schedule overridden to Occupied mode override signal of OCCUPIED from the Excel 10 Zone Manager or other LONWORKS Bus device STANDBY Controller occupancy mode was Network input DestManOcc contai
154. ls 16 17 and 18 All wiring connections to the controller are made at screw terminal blocks Connection for operator access to the LONWORKS Bus is provided by plugging the SLTA connector cable into the LONWORKS Bus communications jack The W7750A B C Models consist of a single circuit board that is mounted in a sheet metal subbase and protected by a factory snap on cover The three controllers have the same physical appearance except for terminals 16 through 20 W7750A and different labels next to the wiring terminals see Fig 3 5 or 6 Wires are attached to the screw terminal blocks on both sides of the controller The controllers mount with two screws see Fig 4 or 7 The W7750 can also be mounted using DIN rail To mount the W7750 on DIN rail purchase two DIN rail adapters obtain locally part number TKAD from Thomas and Betts see Fig 8 then snap onto standard EN 50 022 35 mm by 7 5 mm 1 3 8 in by 5 16 in DIN rail DIN rail is available through local suppliers A channel in the cover allows the controller status LED to be visible when the cover is in place There are no field serviceable parts on the circuit board and therefore it is intended that the cover never be removed The W7750A B C can be mounted in any orientation Ventilation openings were designed into the cover to allow proper heat dissipation regardless of the mounting orientation See Fig 4 and 7 The input output and control differences between the two
155. lt 2 s A mo 55 8 5 fs o ego E Engineering Units English 02 2 Metric or States plus Range Window allows the window sensor from another node to be used as the window sensor and is typically bound to nvovWndow of another node Window must show that the window is closed for 300 seconds before Window is used as window closed This makes it possible for several window sensors to be ORed together by binding themall to nviWindow If window open for up to 300 seconds after the last sensor shows window closed If the state is OFF or SW_NUL then the result is Window Closed If the state is SVV_ON and the value is O then the result is Window Closed If the node receives this combination of state and value then state is set to SW OFF If the state is SW ON and the value is not zero then the result is Window Open NOTE is called nviEnergyHoldOff in the LONMARK compliance profile SrcWhndwct rNoWndow Oto 100 See the preceding NOTE nvoWndowis called rviEnergyHoldOft in the 5 switch LonMark compliance profile SrcVWndw rNoWndow state SW NUL MIX Window allows the hard wired window sensor to be used by other nodes on SNVT switch 1 the network The valid states are as follows If the state is SVV OFF andthe 255 value is O then the result is Window Closed If the state is ON and the value is 100 percent the result is Window Open If the state is and
156. ltage offsets are new in engineering units not volts VoltageOffsetCal 1 provides offset calibration for the voltage current analog sensor input and is added to the sensed value The current analog sensor is converted to a voltage by a 249 ohmresister wired across the input terrrinals The range of VoltageOffsetCal 1 is between 1 and 1 volt Voltage offsets are new in engineering units not volts FanOnHeat specifies the operation of the fan during HEAT mode If FanOnHeat is 1 TRUE then the fan is on when the mode is HEAT If FanOnHeat is FALSE the fan is never tumed on when the mode is HEAT and typically therrrestatically controlled switch sensing heated air temperature tums on the fan H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 96 Table 25 Configuration Parameters Continued E Vision Legend IM Monitor P Parameter S Schematic NOTE Physical I O points that are configurable are in Table 20 Engineering Units English User Metric or States plus Range Address DisMinHtTirre i DisableHeatMinTine i DisableCoolMiriTirre CascadeControl Comments If DisableHeatiMiriTirre is FALSE the heating stages are on or off for rrinirnumtirre deterrrined by ubHeatCph Refer to Table 17 Interstage MinirmumrTirres of the SystemEngineering Guide If DisableHeatMinTinre is 1 TRUE the heating stages are on or off for a second rrinirrum tir
157. lue 15 then WSHP Enable is O Disable Water Source Heat Purp If rMWSHPEnable state is SVV ON and the niWSHPEnatble value is O then WSHPErnable is O Disable Water Source Heat Purp If rMWSHPEnable state is SVV ON and the MiWSHPEnable value is not O then WSHPEnable is 1 Enable Water Source Heat Purp If rMWSHPEnable state is and the niWSHPEnable value is any value then WSHP Enable is 1 Enable Water Source Heat Purrp when MMWSHP Enable is not bound to another node rvoData2 UPDATE ALL FIELDS UPDATE ALL FIELDS nvoData2 FieldNo nvoDeta2 and nvoCtiDetaG2 are output network BYPASS TIMER FIELD variables indicating the node status The information contained in these TEMP CONTROL PT FIELD network variables are typically used to display the node status on an SPACE TEMP FIELD Operator terrrinal used in a trend log or used in a control process The DISCHARGE TEMP FIELD infomation contained in 2 and nvoData2 are identical DISCHARGE SET PT FIELD nvoData2 is a polled network variable and must be polled by the receiver RETURN TEMP FIELD nvoCtiDataG2 uses the SGPUC mechanism FieldNo indicates which other RETURN HUMIDITY FIELD data field in the SGPUC network variable has changed since the last tive it 9 RETURN ENTHALPY FIELD was sent on the network according to the SGPUC mechanism OUTDOOR TEMP FIELD OUTDOOR HUMIDITY FIELD OUTDOOR ENTHALPY FIELD FILTER PRESSURE FIELD SPACE 2 FIELD MONITOR VOLTS FIELD COOL POS FIE
158. mbers One LonWorks Bus Segment Example One Q7750A Excel 10 Zone Manager Maximum Number of Nodes Equals 62 1 node Port for operator terminal access CARE E Vision 1 node Maximum number of Excel 10s 60 nodes Total 62 nodes Two LoNWoRks Bus Segments Example One Q7750A Excel 10 Zone Manager Maximum Number of Nodes Equals 125 1 node One Q7751A B Router 2 nodes 1 in each Bus Segment Ports for operator terminal access two CARE E Vision terminals 2 nodes 1 in each Bus Segment Maximum number of Excel 10s in segment number one 60 nodes Maximum number of Excel 10s in segment number two 60 nodes Total 125 nodes Refer to the LONWoRkS Bus Wiring Guidelines form 74 2865 for complete description of network topology rules and the maximum wire length limitations If longer runs are required a Q7740A 2 Way or Q7740B 4 Way Repeater can be added to extend the length of the LonWorks Bus A Q7751A B Router can be added to partition the system into two segments and effectively double the length of the LONWORKS Bus Only one router is allowed with each Excel 10 Zone Manager and each network segment can have a maximum of one repeater In addition all LONWoRKS Bus segments require the installation of a 209541B Termination Module for a singly terminated LONWORKS Bus or two 209541B Termination Modules for a doubly terminated LONWoRKS Bus For more details on LONWORKS
159. mpSensr 70 RmTempSensr 70 RmtStptPot 70 SmokeMonSw 72 StatusAirFlow 72 StatusDO1 71 StatusDO2 71 StatusDO3 71 StatusDO4 71 StatusDO5 71 StatusDO6 71 StatusDO7 71 StatusDO8 71 StatusDM 71 StatusDI2 71 StatusDI3 72 StatusDI4 72 TimeClkSw 72 WindowSw 73 Table 21 Control Parameters Address Page BypTime 76 DaTempCICtrlBd 77 DaTempEcCtrlBd 77 DaTempHiLim 73 DaTempHtCtrlBd 77 DaTempLoLim 73 DiffEconEnTemp 75 DicBumpTemp 73 EconlAQPos 76 EconMinPos 76 FitrPressStPt 76 GainCoolDer 77 GainCoollnt 77 GainCoolProp 77 GainHeatDer 77 GainHeatlnt 77 GainHeatProp 77 IAQSetpt 76 MaxClRamp 75 MinCIRamp 75 MaxHtRamp 74 MinHtRamp 74 63 OaEconEnTemp 75 OaEnthEn 76 74 OaTempHtLkOut 73 OaTempMaxCIRp 75 OaTempMinCIRp 75 OaTempMaxHtRp 74 OaTempMinHtRp 74 PwmFullScale 76 PwmPeriod 76 PwmZeroScale 76 StptKnobHiLim 76 StptKnobLowLim 76 Table 22 Energy Management Points Address Page DestBypass 78 DestDlcShed 78 DestFree1 79 DestFree2 79 DestTimeCIk 80 DestWSHPEnable 79 DestSchedOcc 78 SrcBypCt 78 SrcBypass 78 SrcTimeCIk 80 SrcTimeCIkCt 80 TodEventNext 78 Tuncos 78 Table 23 Status Points Address Page AlarmLog1 83 BypTimer 88 CO2Sens 89 CoolPos 90 CoolStgsOn 86 DaSetpt 89 DaTemp 89 DicShed 86 EconPos 90 FilterPress 89 1 86 Free2Stat 86 HeatPos 90 HeatStgsOn 86 MonitorSens 90 MonitorSw 87 NetConfig 93 OaEnth 89 OaEnthCalc 85 89 89
160. n CorOnMoce specifies the mode when the Change Over Relay COR is energized Resistiveln O specifies which logical sensor is assigned to each physical analog input sensor channel according to the enurrerated list that is shown in the Engineering Units States column Resistiveln O is the only input available in the W7750A controller Resistivelr 1 specifies which logical sensor is assigned to each physical analog input sensor channel according to the enunrerated list that is shown the Engineering Units States column Resistiveln O is the only input available in the W7750A controller in the Engineering Units States column Voltage inputs are not available in Voltageln 1 specifies which logical sensor is assigned to each physical analog input sensor channel according to the enurrerated list that is shown in the Engineering Units States column Voltage inputs are not available in Digitalln O specifies which logical switch type is connected to the flexible digital input switch channel according to the enurrerated list that is shown in the Engineering Units States colum and Digitall n1 are the only inputs available in the W7750A controller The controller is configured at the factory with this user address configured to TIME CLOCK IN lt 7 o 5 29 22 Voltageln O specifies which logical sensor is assigned to each physical analog input sensor channel according to the enurrerated list
161. n e crederent TRE E E 33 Step 4 Prepare Wiring 35 2 LONMARK 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER General Considerations SERSAR 35 W7750 Gontrolleis saya Rete 36 FACTORY DEFAULT DIGITAL 37 LONWORKS Bus Termination Module 2 43 Step 5 Order Equipment Rs 45 Step 6 Configure Controllers 48 Step 7 Troubleshooting 48 Troubleshooting Excel 10 Controllers Wall Modules 48 Temperature Sensor and Setpoint Potentiometer Resistance Ranges 49 Alarms usasapa u y ees 49 Broadcasting the Service Message 50 W7750 Controller Status LED 40 2 4 4 0 01 50 T7770C D Wall Module Bypass Pushbutton and Override LED 51 T7560A B Digital Wall Module Bypass Pushbutton and LCD Display Occupancy Symbols re cU te b HR m ayu Ret 51 Appendices 51 Appendix A Using E Vision to Commission W7750 Controller 51 Sensor Calibration is s u nce OR ni ER e RP EU re eee ESOS 51 Setting the Pid Parameters 51 Appendix B Sequences of Operation sse 52 Common Operations ee erre nta Ra 53 Room Temperature Sens
162. n nviEcon state is not SVV NUL then the local inputs are ignored and nviEcon state is used instead See nciConfig EconEnable The valid enurrerated values are ST OFF means the outdoor air is not Suitable to augnrent cooling ST ON means the outdoor air is suitable to augrrent cooling S T means no local sensor is selected nciConfig EconEnable or the selected local sensor has failed or has not been configured by nciloSelect and that rviEcon state is NUL The outdoor air is considered unsuitable for cooling ProofAirFlow ProofAirFlow indicates the current state of the ProofAirFlow switch used by the control process and is read by the local sensor via nvolO ProofAirFlow The valid enurrerated values ST OFF means air flowis not detected ST ON rrears air flowis detected ST_NUL means no air flow switch is configured siCalcODEnthalpyS7 siCalcODEnthalpyS 7 is the calculated outdoor air enthalpy in btu Ib calculated fromthe siOutdoorTen pS 7 and ubOutdoorHurridityS1 siCalcODEnthalpyS7 is used to detemine the suitability of outside air for cooling when nciConfig EconEnable is SINGLE ENTH and both outdoor terrperature and hurridity sensors present sICalcODErthalpyS 7 is compared to the enthalpy setpoint stored in nciA rd SetPts ubOdE nthalpyEnables2 siCalcRAEnthalpyS7 siCalcRAEnthalpyS7 is the calculated retum air enthalpy in btu Ib calculated fromthe siRetumTenpS7 and ubRetumHurridityS1 siCalcRAEnthalpyS7
163. ned above Override Button The wall module Override pushbutton can command status of Bypass Continuous Unoccupied and Not Assigned This source has the lowest priority status in the above mentioned schemes The above mention sources of override must be either Not Assigned or Off before the Override pushbutton affects the manual override status in the Network Wins scheme All actions in this case taken from the Override pushbutton are locked out Bypass status is a controller timed event whose duration is set in BypTime Upon expiration of the timer the status returns to Not Assigned The status of this input can be overridden with the receipt of Not Assigned from DestManOcc This in effect cancels a timed bypass or a continuous unoccupied mode The Override pushbutton can be configured as Normal all of the above mentioned states are possible Bypass Only Bypass and Not Assigned only or None effectively Disabling the Override pushbutton TIME CLOCK Occ Time Clock OccTimeClock is the state of the digital input configured and wired to a time clock When the digital input is detected to be Closed Occupied the scheduled occupancy will be OCCUPIED If the detected state of the digital input is Open Unoccupied then the scheduled occupancy will be UNOCCUPIED If the Occ Time Clock is not configured then either the DestSchedOcc network input received from a central control or the time clock that is broadcas
164. nfigured ADCalError All control functions associated with the failed sensor are disabled as if the sensor was not configured All control functions associated with the failed NV are disabled as if the NV wes not configured SetPtOffsetEror All control functions associated with the failed NV are disabled as if the NV wes not configured All control functions associated with the failed NV disabled as if the NV wes not configured OdTenpenror All control functions associated with the failed NV disabled as if the NV wes not configured OdHurrError All control functions associated with the failed NV are disabled as if the NV wes not configured SensorOccError All control functions associated with the failed NV are disabled as if the NV wes not configured H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 23 Status Points Continued Engineering Units English Metric or States plus Range a Se 2 55 L 25 BS A 1 1 1 1 1 1 1 1 E Vision Legend M Monitor P Parameter S Schematic VWindowEermor All control functions associated with the failed NV are disabled as if the NV was not configured DicShedkrror All control functions associated with the failed NV are disabled as if the NV was not configured TodEventError All control functions associated with the faile
165. nforms with the LONMARK HVAC Interoperability standard for Roof Top Unit Controllers see Fig 9 The T7770 or T7560 direct wired Wall Modules are used in conjunction with W7750 Controllers The zone controlled by the W7750 Controller typically can use a T7770A through D or a T7560A B Wall Module Additional features available in T7770A through D models include analog setpoint input knob override digital input pushbutton override status LED and LONWORKS Bus network access jack Additional features available in T7560A B models include analog setpoint input knob override digital input pushbutton humidity sensor T7650B model override status LCD and digital display The Q7750A Excel 10 Zone Manager is a communications interface that allows devices on the LONWORKS Bus network to communicate with devices on the standard EXCEL 50009 System C Bus Fig 1 shows an overview of a typical system layout The Q7750A also provides some control and monitoring functions C BUS COMMUNICATION NETWORK EXCEL 10 r PERSONAL COMPUTER TOOLS ZONE 2 EXCEL 500 E VISION MANAGER EXCEL BUILDING SUPERVISOR CARE C BUS TO LONWORKS BUS INTERFACE DEVICE Q7740A 2 WAY LONWORKS BUS COMMUNICATIONS NETWORK LONWORKS BUS COMMUNICATIONS NETWORK REPEATER lt EXCEL 10 W7750B EXCEL 10 W7751F CVAHU PANEL PLENUM CONTROLLER MOUNT VERSION VARI
166. ng The W7750B Model offers two additional DOs for a total of eight The W7750C offers five DOs and three Analog Outputs AOs Fig 13 shows a typical application of two stages of heat two stages cooling COOL HEAT COIL COIL FAN COMPRESSORS STARTER LIS Y1 UVVVVUUVUVUVVUM DISCHARGE AIR GAS COMBUSTION CONTROLS EXCEL 10 T7560A B OR T7770 CVAHU W7750A B C M17491 Fig 13 Fan with two stages of heating and two stages of cooling MODULATING HEATING COOLING CONTROL The W7750 Controller provides modulating equipment control for heating and cooling equipment and economizer dampers see Fig 16 using either Series 60 Floating Control or Pulse Width Modulated PWM control PWM control is available on the W7750B C only The Series 60 Modulating Control is provided through two Relay digital outputs on the W7750A or two Triac digital outputs on the W7750B C one to pulse the valve actuator open and one to pulse it closed PWM control 74 2958 1 24 positions the actuator based on the length in seconds of the pulse from the digital output For PWM the controller outputs a pulse whose length consists of two parts a minimum and a maximum The minimum pulse time represents the analog value of 0 percent and the maximum pulse length that represents an analog value of 100 percent If the
167. ning a time of day schedule overridden to Standby mode override signal of STANDBY from the Excel 10 Zone Manager or other LONWORKS Bus device 27 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 5 Modes Of Operation For The Excel 10 W7750 Controller Continued Mode Description Events causing a controller to switch to this mode UNOCCUPIED Controller occupancy mode was Network input DestManOcc containing a time of day schedule overridden to Unoccupied mode override signal of UNOCCUPIED from the Excel 10 Zone Manager or other LONWORKS Bus device BYPASS Controller occupancy mode was DI Bypass was pressed and the Bypass duration timer has not yet overridden to Bypass the current expired or the network input DestManOcc has a value of BYPASS Unoccupied mode NOT No Bypass action No Override input received ASSIGNED Operational Modes User Address StatusMode START UP On power up provides a staggered This mode occurs on controller power up and after downloading to the AND WAIT start sequence to evenly apply the load controller from the configuration tool Temperature control loops are to the electrical system disabled COOLING The Excel 10 is controlling the Cooling Space temperature has risen above the current cooling setpoint or the mode network input DestHvacMode is COOL HEATING The Excel 10 is controlling the Heating
168. no sensor IO S5paceDc2 or 1O laqOverRide configured or the only configured sensor IO SpaceCo2 has failed For laqOvr State refer to laqOwr value H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Appendix D Q7750A Excel 10 Zone Manager Approximate Memory Size Estimating Procedure i i i i 1 Determine the number of points per controller required Point Estimating Guide at the Central for example 5 Memory size approximation is shown below all sizes in bytes NOTE All remaining points that not mapped can be accessed through the Direct Access When memory size is less than 110 000 bytes the size is OK feature When memory size is between 110 000 and 128 000 bytes 2 Calculate the number of Excel 10 Zone Manager pro the application may be too large The user must expect to gram points that are used in control logic and in the reduce the application complexity reduce the number of switching table attached Excel 10s or distribute the Excel 10s over more than 3 Estimate the program complexity of the Zone Manager one Zone Manager one of three levels No time programs control logic switching tables When memory size is greater than 128 000 the size is too b 10K of control logic one time program five large The application size must be reduced as described switching tables and five control loops abo
169. nstallation Instructions and Checkout and Test manual for each product Most products have a Checkout and Test section in their Installation Instructions manual If not look for a separate Checkout and Test manual See the Applicable Literature section for form numbers EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER 1 Check version numbers of the controller firmware E Vision and the E Vision script Check the wiring to the power supply and make sure there is a good earth ground to the controller Check the occupancy and HVAC modes Compare the current actual setpoint with the actual space temperature Check the desired configuration settings Check the network wiring and type of wire used Check the Zone Manager mapping and referred points NOTE Ifthe fan shuts off periodically for no specific reason and the controller restarts the fan by itself after about 20 to 60 seconds the cause could be a bad Air Flow switch If the controller has a digital input assigned as a Proof of Air Flow input try unconfiguring this digital input to see if these shutdowns continue If not adjust or replace the Air Flow switch to get it working Temperature Sensor and Setpoint Potentiometer Resistance Ranges The T7770 or T7560A B Wall Modules or the C7770A Air Temperature Sensor has the following specified calibration points which are plotted in Fig 40 Temperature F Resistance Value ohms 98 1175
170. nts for Sensor Resistance versus Temperature Fig 56 shows the graph these points Table 33 Sensor Resistance Versus Temperature 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER SENSOR RESISTANCE VERSUS TEMPERATURE SENSOR VOLTAGE VERSUS HUMIDITY PERCENTAGE 10 00 9 50 9 00 8 50 8 00 7 50 7 00 6 50 gt 6 00 5 50 5 00 4 50 4 00 3 50 3 00 2 50 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 DEGREES F M11608 PERCENTAGE M11610 Fig 56 Graph of Sensor Resistance versus Temperature Fig 57 Graph of Sensor Voltage versus Humidity Voltage Current Sensors Sensor Type C7600C 4 to 20 mA Sensor Type Sensor ss C7600B1000 2 to 10V Decorative Wall Mount ss Humidity Table 35 lists the points for Sensor Voltage versus Humidity Fig 58 shows the graph of these points Table 34 lists the points for Sensor Voltage versus Humidity Fig 57 shows the graph of these points Table 35 Sensor Voltage Versus Humidity Table 34 Sensor Voltage Versus Humidity x G 6 o 99 CURRENT MILLIAMPS 0 10 20 30 40 50 60 70 80 90 100 HUMIDITY IN PERCENT RELATIVE HUMIDITY MS131B Fig 58 C7600C output current vs humidity Sensor Type 17400A1004 Sensor Use Enthalpy 74 2958 1 112 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 36 lists the points for Sensor Current versus Enthalpy volts
171. o5 Em 2 2 E Vision Legend M Monitor P Parameter S Schematic allows one controller to detemine the suitability of outdoor air for free cooling and share this with other nodes and is typically bound to Econ on other nodes If the economizer function is configured by Config EconEnable Econ is periodically calculated fromthe local sensor specified by Config EconEnable and is sent on the network Econ does not affect Econ The output has the following states If the state is SVV OFF and the value is O then the outdoor air is not suitable for free cooling If the state is SV ON and the value is 100 percent then the outdoor air is suitable for free cooling If the state is SVV NUL and the value is O the corresponding econorrizer function is not enabled because Config EconEnable is DIFF TEMP or DIFF ENTH or because the selected sensor has failed For rvoEconstate refer to nvoEcon value H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 Table 27 Direct Access And Special Points E Vision Legend IM Monitor P Parameter S Schematic Engineering Units English User Address NvName Field Name Metric or States plus Range DestManMode rwiManualMode MODE ENABLE ManualMode is an input which is used to disable the Excel 10s control algorithrre MODE DISABLE and to manually set the physical outputs ManualMode remains unchanged until MODE MAN
172. odule pushbutton see Fig 43 and 44 By pressing the wall module pushbutton for more than four seconds the controller sends out the Service Message The third involves using the PC Configuration tool as follows When an Assign ID command is issued from the commissioning tool the node goes into the SERVICE MESSAGE mode for five minutes In the SERVICE MESSAGE mode pressing the Occupancy Override button on the remote wall module refer to Fig 43 and 44 for override button location causes the Service Message to be broadcast on the network All other functions are normal in the SERVICE MESSAGE mode Even if an Excel 10 W7750 Controller does not have an Override button connected it can broadcast the Service Message on the network by temporarily shorting the Controller Bypass Input terminal to the Sensor Ground terminal on the W7750A B C short terminals 3 and 5 74 2958 1 50 The commissioning tool is used to perform the ID Assignment task see the E Vision User s Guide form 74 2588 SERVICE PIN BUTTON M10094 Fig 41 Location of the Service Pin Button W7750 Controller Status LED The LED on the front and center of a W7750 Controller provides a visual indication of the status of the device See Fig 42 When the W7750 receives power the LED should appear in one of the following allowable states Off no power to the processor Continuously On processor is in initialized state Slow Blink controlling normal st
173. ol a modulating cooling valve a heating valve and economizer dampers When floating control is used the full stroke motor drive time of the actuator must be entered into the configuration parameter CoolMtrSpd for cooling HeatMtrSpd for heating or EconMtrSpd for the economizer dampers PULSE WIDTH MODULATING PWM CONTROL The Excel 10 W7750B C Controllers can drive a PWM type actuator to control a modulating cooling valve a heating valve and economizer dampers PWM control positions the 61 actuator based on the length in seconds of the pulse from the digital output The controller outputs a pulse whose length consists of two parts a minimum and a maximum The minimum pulse time represents the analog value of zero percent also indicates a signal presence and the maximum pulse length that represents an analog value of 100 percent If the analog value is greater than zero percent an additional time is added to the minimum pulse time The length of time added is directly proportional to the magnitude of the analog value If PWM control is used the configuration parameters for the PWM operation must be specified These are PwmPeriod PwmZeroScale PwmFullScale These three parameters are shared by all configured PWM outputs this means the heating cooling and economizer actuators must be configured to accept the same style of PWM signal Example To find the pulse width of a valve actuator for example stroke mid posi
174. olute LONWoRKS Jack Honeywell Logo T7770C1051 Sensor with Setpoint Bypass LED and Relative Setpoint LONWORKS Jack No Logo T7770C1036 Sensor with Setpoint Bypass LED and Degrees C Absolute LONWORKS Jack No Logo T7770D1000 Sensor with Bypass LED and LONWORKS Jack Degrees F Absolute Honeywell Logo T7770D1018 Sensor with Bypass LED and LONWORKS Jack Degrees C Absolute No Logo T7560A1018 Digital Wall Module with Sensor Setpoint and Bypass LCD Honeywell Logo T7560A1016 Digital Wall Module with Sensor Setpoint Bypass LCD and Humidity Honeywell Logo Sensors C7770A1006 Air Temperature Sensor 20 Kohm NTC Duct mounted sensor that functions as a nonlinearized primary and or secondary sensor C7031J1050 Averaging Discharge Return Air Temperature Duct element cord length 12 ft 3 7m Sensor 20 Kohm NTC C7031B1033 Discharge Air or Hot Water Temperature Use 112622AA Immersion Well 74 2958 1 46 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 11 Excel 10 W7750 Controller Ordering Information Continued Part Number Comments Product Description C7031C1031 Duct Discharge Return Air Sensor 20 18 in 457mm insertion length C7031D1062 Hot or chilled Water Temperature Sensor 20 Kohm NTC C7031F1018 Outside Air Temperature Sensor 20 Kohm W7750B C only NTC C7031K1017 Hot or chilled Water Temperature Sensor 20 Strap on Kohm NTC C7100A101
175. on off cycles per hour when the mode is HEAT In addition the cycle rate specifies the minimumon and off tire Refer to Table 17 Irterstage Minimum Times of the System Engineering Guide for the actual values ig ubCoolCph 2to 12 CoolCph specifies the nid load nurrber of on off cycles per hour when the rrode is COOL In addition the cycle rate specifies the rrinirrurnon and off tire Refer to Table 17 Interstage Minimum Times of the System Engineering Guide for the actual values ig ubFanRunonCoolSO Seconds FanRunonCool specifies how long the fan runs after all the cooling stages Oto 120 have tumed off The fan is tumed off FanRunonCool seconds after all the cooling demand has tumed off ubFanRunonHeatSO Seconds FanRunonHeat specifies how long the fan runs after all the heating stages Oto 120 have tumed off The fan is tumed off FanRunonHeat seconds after all the heating demand has tumed off H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 Table 25 Configuration Parameters Continued Engineering Units English User Address Field Name Metric or States plus Range ubEconMtrTirmesSOo Seconds 2010 240 i ubCoolMtrTineSO Seconds 20 to 240 Seconds 10 NILA Jo 9jejs ubieatiVirTirreSO 2010 240 96 siResistiveOffsetCalS F 15to 15 910 9 siResistiveOffsetCalS 711 Degrees F 15to 15 910 9
176. on the W7750 Controller where a contact closure indicates poor air quality and initiates the IAQ override mode The second which is only available on the W7750B C is through an analog input that connects to a CO Sensor 0 to 10V The measured value of CO from this sensor 0 to 2000 ppm is compared to the setpoint IAQSetpt When the CO level is higher than the setpoint 800 PPM the IAQ override is initiated The IAQSetpt hysteresis is 50 PPM IAQ override is deactivated at a CO level less than 750 PPM When the W7750 Controller is in the COOL mode during an IAQ override it is possible for the heating outputs to be activated This can occur if the outdoor air temperature is cold enough to cause the discharge air temperature to drop below the DaTempLoLim setpoint when the dampers open to the EconlAQPos position and the laqUseHeat flag is set If this situation occurs the heating is controlled to maintain the discharge air temperature at 1 F 0 65 C above the DaTempLoLim setpoint FREEZE STAT Upon receiving a contact closure the W7750 control algorithm will close the outdoor air damper and open the hot water and chilled water valves if available to the full open position as a safety precaution If manual reset operation is desired the Freeze Stat device must provide the physical pushbutton which the operator presses to reset the system after a freeze condition has occurred DISCHARGE AIR LOW LIMIT CONTROL If the discharge
177. on the same controller Dry contact inputs are sensed using a 9 milliamp at 4 8 volts detection circuit It is very important that the device used contains high quality noncorroding contacts with resistivity that does not degrade that is increase over time Use noble metal such as gold or silver or pimpled or sealed contacts to assure consistent long term operation Two of the following Digital Inputs DIs can be configured when using the W7750A and four of the following when using the W7750B C Fan Status Contact Closed Fan on AQ Switch Contact Closed Poor Air Quality Time Clock Contact Closed Occupied Mode Contact Open Unoccupied Mode Schedule Master Contact Closed Local time clock is used as master time clock Economizer Enable Signal Contact Closed Economizer Enabled for cooling use Smoke Monitor Contact Closed Smoke Detected 19 Dirty Filter Contact Closed Dirty Filter Shutdown Signal Contact Closed Shut off all equipment Occupancy Switch Contact Closed Room is Occupied Contact Open Room is Unoccupied Window Monitor Contact Closed Window is Closed Coil Freeze Stat Only use this DI when using E Vision Contact Closed Coil Freeze condition sensed Wall Module Bypass Pushbutton Momentary DI See Appendix B Sequences of Operation for bypass details TRIAC OUTPUTS ON THE W7750B C MODELS ONLY Power ratings 20 Vac
178. onfigured it has highest priority and determines the Occupancy mode This digital input is either ON shorted occupied OFF open unoccupied or not active not configured otherwise the status is determined by the DestSchedOcc input from the network source The DestSchedOcc has three possible states occupied unoccupied or standby Manual Override Status can be derived from three sources and governed by two selectable arbitration schemes The two schemes are Network Wins Last in Wins as set in OvrdPriority The three sources of manual override status are DestManOcc Has possible states Occupied Unoccupied Bypass Standby and Not Assigned not active This input source has the highest priority in determining manual override status for a Network Wins arbitration scheme and in the event there is more than one source change at a time in the Last in Wins arbitration scheme Here bypass initiates a self timed bypass of the control unit and expires upon completion of the defined timed period The controller then treats the bypass status of this input as Not Assigned until the next change in status EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER DestBypass Has possible states Bypass On Bypass or Not Assigned not active This input places the controller in an untimed bypass state or turns off the bypass mode This source is second in priority to DestManOcc under the same arbitration schemes mentio
179. ontrollers Fig 27 through 35 illustrate W7750A B C Controller wiring for various configurations Connections to the wall module terminals 2 through 6 and the communications terminals 14 and 15 are made at terminal blocks Connection for access to the LONWoRKS is provided by plugging the connector into the communications jack 1 STRIP 1 2 IN 13 MM FROM WIRES TO 1 2 BE ATTACHED AT 13 ONE TERMINAL 2 TWIST WIRES TOGETHER WITH PLIERS A MINIMUM OF THREE TURNS 3 CUT TWISTED END OF WIRES TO 3 16 IN 5 MM BEFORE INSERTING INTO TERMINAL AND TIGHTENING SCREW THEN PULL ON EACH WIRE IN ALL TERMINALS TO CHECK FOR GOOD MECHANICAL CONNECTION T Fig 25 Attaching two or more wires at terminal blocks The W7750B provides a jumper to select High Side or Low Side switching of the digital outputs Fig 26 shows the W7750B High Side Low Side selectable switching See wiring diagrams Figs 30 through 34 74 2958 1 36 No IS LOCATED NEAR TERMINAL 24 COVER REMOVED wrrson IS FACTORY DELIVERED WITH JUMPER ON HIGH SIDE PINS CLOSEST TO TERMINAL BLOCK LOW SIDE PINS ARE TWO PINS CLOSEST TO Q38 M16418A Fig 26 W7750B High Side Low Side selectable switching and jumper location NOTE If an Excel 10 W7750A B C Controller or Zone Manager is not connected to a good earth ground the controller internal transient protection circuitry is compromised and the function of protecting the controlle
180. ooling where refrigerant is expanded to its cold state within a heat exchanging coil that is mounted in the air stream supplied to the conditioned space Echelon The company that developed the LONWORKS Bus and the Neuron chips used to communicate on the LONWORKS Bus Economizer Refers to the mixed air dampers that regulate the quantity of outdoor air that enters the building In cool outdoor conditions fresh air can be used to supplement the mechanical cooling equipment Because this action saves energy the dampers are often referred to as economizer dampers EMI Electromagnetic Interference electrical noise that can cause problems with communications signals E Link Refers to the Q7750A Zone Manager This name is used in internal software and in CARE software EMS Energy Management System refers to the controllers and algorithms responsible for calculating optimum operational parameters for maximum energy savings in the building EEPROM Electrically Erasable Programmable Read Only Memory the variable storage area for saving user setpoint values and factory calibration information Enthalpy The energy content of air measured in BTUs per pound KiloJoules per Kilogram EPROM Erasable Programmable Read Only Memory the firmware that contains the control algorithms for the Excel 10 Controller 74 2958 1 10 Excel 10 Zone Manager A controller that is used to interface between the C Bus and the LONWOR
181. ooling Equipment Configurations 24 STAGED HEATING COOLING CONTROL eene 24 MODULATING HEATING COOLING CONTROL 24 HEAT PUMP CONTROL u ira toten qe Dee Pass aaa 24 ECONOMIZER ener nnns 25 PNEUMATIC ACTUATOR 25 MIXED OUTPUT TYPE CONTROL 26 Occupancy SENSO 26 Window Open Closed 26 Wall Module Options 26 Dirty Filter MoN O J Qa l us 27 Indoor Air Quality IAQ Override 22 0000 27 Smoke ee EEUU EE EHE IM NS 27 2 miei ier due fees 27 Modes of Operation 1 2 ied ae ld lun citri al cde red 27 29 29 Step 1 Plan the System enceinte cre ence daot raa um 29 Step 2 Determine Other Bus Devices 29 Step 3 Lay Out Communications and Power Wiring 30 LONWORKS LAYOUT un sua nas n nennen nnne nennen nnn 30 epa rod as 32 POWER BUDGET CALCULATION 32 EINE LOSS h
182. or 54 Remote Setpoint 55 Setpoint Limits LoSetptLim and HiSetptLim 55 Bypass Mode StatusOvrd and StatusLed 55 BYPASS TIME n ha pne et 55 Override Type 55 OverridePriority J ertet Peace eerte de tte 55 Cycles per Hour ubHeatCph and ubCooIlCph 55 T7770C D or 7560 Wall Module Bypass Pushbutton Operation 55 Standby Mode StatuSOcySen 56 Continuous Unoccupied Mode 56 Occupancy Mode and Manual Override Arbitration 56 Time Clock Occ_Time_Clock 57 Schedule Master Sched 57 se ieee 57 Recovery Ramping for Heat Pump Systems sss 57 Fari Operation oed one creed ier Or ee bene cert co ee 58 Window Sensor 8 58 Smoke Gontrtol esase de rece er pet 58 Demand Limit Control 58 Dirty Filter Monitor u uu rentre teet c bent 59 Up iuit iR RERO DER EI CREDE 59 Temperature Control Operations
183. over ride is active OverridePriority OverridePriority configures the override arbitration between nviManOcc nviBypass state and the wall module override button There are two possible states which have the following meanings LAST specifies that the last command received from either the wall module or nviManOcc determines the effective override state NET specifies that when nviManOcc is not OC NUL then the effective occupancy is nviManOcc regardless of the wall module override state CYCLES PER HOUR ubHeatCph AND ubCoolCph ubHeatCph specifies the mid load number of off cycles per hour default is 6 when the mode is HEAT ubCoolCph specifies the mid load number of on off cycles per hour default is 3 when the mode is COOL This is to protect the mechanical equipment against short cycling causing excessive wear In addition the cycle rate specifies the minimum on and off time according to Table 17 T7770C D OR T7560A B WALL MODULE BYPASS PUSHBUTTON OPERATION The Wall Module Bypass pushbutton is located on both the T7770C D or the T7560A B Wall Modules see Fig 43 and 44 The bypass pushbutton can change the controller into various occupancy modes see Table 16 Table 16 Bypass Pushbutton Operation If the pushbutton is But for not held down for more than The resulting mode is Less than 1 second No Override is active 1 second 4 seconds Bypass a timed Occupied Override 4 s
184. pActSpt 99 SrcUnitStatus 101 SrcWndw 104 SrcWndwCt 104 Table 27 Direct Access and Special Manual Points Address Page DestManMode 106 TestAuxEcon 107 TestAuxHt1 107 TestAuxHt2 107 TestAuxHt3 107 TestAuxHt4 107 TestEconPos 106 TestFree1 107 TestFree2 107 TestHCPos 106 TestHtClMode 107 TestHtClStg1 107 TestHtClStg2 107 TestHtClStg3 107 TestHtClStg4 107 TestMode 106 TestOccStat 107 TestSaFan 107 Table 28 Data Share Points Address Page DestlaqOvrd 108 DestOaEnth 108 SrclaqOvr 108 SrclaqOvrCt 108 SrcMonSw 108 SrcMonSwCt 108 SrcOaEnth 108 Mappable User Addresses and Table Number User Address Table Number BypTime 21 BypTimer 23 25 CO2Sen 23 CoolCycHr 25 CoolMtrSpd 25 CoolOccSpt 26 CoolPos 23 CoolStbySpt 26 CoolStgsOn 23 CoolUnoccSpt 26 DaSeipt 23 DaTemp 23 DaTempCICtrlBd 21 DaTempEcCtrlBd 21 DaTempHiLim 21 DaTempHtCtrlBd 21 DaTempLoLim 21 DestDlIcShed 22 DestEmergCmd 26 DestHvacMode 26 DestManMode 27 DestSchedOcc 22 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER DiffEconEnTemp 21 DisMinHtTime 25 DisMinClTime 25 DicBumpTemp 21 EconlAQPos 21 EconMinPos 21 EconMtrSpd 25 EconPos 23 EconMode 25 FanFailTime 25 FanMode 25 RaEnthCalc 23 RaHum 23 RaTemp 23 RmTempActSpt 23 RmTempCal 25 RmtStptPot 20 SaFan 23 SaFanStatus 23 SetPtKnob 25 ShutDown 23 SmkCtlMode 25 FanOnHtMode 25 StatFreezeStat 23 FanRunOnCool 25 StatusAlmTyp 23 FanRunOnHeat 25
185. placed across the 2 to 10V devices input and ground terminal See Fig 37 for an example resistor converts 4 to 20 signal into a 2 to 10V signal NOTE Wire the 500 ohm resistor physically as close as possible to the driven device If the resistor is located far away from the driven device it is possible that noise will be added onto the 2 to 10V signal to ground line This noise could cause an actuator to re position jitter and reduce the actuators life 43 RP7517B PNEUMATIC TRANSDUCER PNEUMATIC VALVE ACTUATOR N 24 W7750C CONSTANT VOLUME AHU CONTROLLER A ANALOG OUTPUTS FROM W7750C ARE 4 20 mA SIGNALS 500 OHM 1 TOLERANCE OR BETTER PRECISION RESISTOR IS REQUIRED TO DRIVE THIS RP7517B AND OTHER 2 TO 10V DEVICES PLACE THIS RESISTOR AS CLOSE AS POSSIBLE TO THE DRIVEN DEVICE A USE 1 4 IN 6 MM PNEUMATIC TUBING MINIMUM BRANCH LINE MUST BE 6 FT 1 8M OR LONGER A TERMINALS 16 18 ARE ANALOG OUTPUTS W7750C ONLY M17368 Fig 37 RP7517 B pneumatic transducer to W7750C LONWORKS Bus Termination Module One 209541B Excel 10 FTT Termination Module is required for a singly terminated LONWORKS Bus segment Two 209541B Excel 10 FTT Termination Modules are required for doubly terminated daisy chain LONWORKS Bus segment see Fig 38 Refer to LONWORKS Bus Wiring Guidelines form 74 2865 for termination module placement rules For 209541B Excel
186. position EconMinPos for ventilation purposes Because the outdoor air can be used to supplement mechanical cooling the economizer operates as if it were the first stage of cooling So if the outdoor air is suitable for cooling use the mechanical cooling either staged or modulating is held off until the economizer has reached its fully open position Then if the discharge temperature continues to be above setpoint the mechanical cooling is allowed to come on If the outdoor air is not suitable for cooling use the economizer is set to its minimum position and mechanical cooling is allowed to come on immediately When the controller is in the Heat mode the economizer is held at the minimum position setting EconMinPos The minimum position setting is only used during Occupied mode operation When in Standby or Unoccupied modes the outdoor air dampers are allowed to fully close if there is no call for cooling or if the outside air is not suitable for cooling use 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER INDOOR AIR QUALITY IAQ OVERRIDE The Excel 10 W7750 Controller supports an IAQ override feature that upon detection of poor air quality in the space allows the economizer dampers to be opened above the standard minimum position setting to a value set in EconlAQPos Two different methods of detecting poor air quality are supported The first is by using an IAQ switch device connected to a digital input
187. qOvrstate is SVV ON then poor air quality is detected Or if a local digital inputis configured as IAQ OVERRIDE IN and nvolO laqOverRide is 1 then poor air quality is also detected When poor air quality is detected the economizer minimum position is set to ncAuxdlSetPts ubEconlagPosSO instead ncAuxlSetPts ubEconMinPosSO VWnen an econorrizer is not configured lacOverRide is O SrrokelVonitor SmokeMonitor indicates the current state of the SrrokeMonitor input used by the control process and is read fromanother node rMErrerg or the local sensor nvolO SrrokelVoritor If either rMErrerg is not EMERG NORMAL or nvolO SrrokeMonitor is 1 then SmokeMonitor is 1 meaning that smoke is detected Otherwise SrrokelMonitor is O meaning smoke is not detected Vhen smoke monitor is 1 the algorithm controls as per the settings found in nciConfig SrrokeControl VindowOpen VWindowOpen indicates the current state of the window sensors and is calculated fromnviVVindow state and the local occupancy sensor via nvolO VWindowOpen The local sensor and nviVVindow are ORed together If either the local sensor or nviWVindow shows that the window is open nvolO WMndowOpen 1 or nviVVindowstate SVV ON then VindowOpen shows that the window is open 1 means that the window is open and means that the window is dosed When the window is open the controller mode is switched to FREEZE PROTECT DirtyFilter DirtyFilter indicates the state of the air f
188. r 9181510 anien MonSwitch is the state of the digital input configured and wired to general purpose monitor switch 1 input shorted means that switch is dosed and O input open means that the switch is open Model indicates the Mode of the node One of the digital inputs is connected to a printed wiring board trace to let the software know what kind of hardware is present If Model is 1 input held high the hardware is the V7750B Model If Model is input shorted to ground the hardware is the W7750A Model If ScheduleMaster is 1 input shorted the node is the schedule master and the locally connected time dock will be sent via TirreClk to other nodes on the network If ScheduleMaster is O input open the node is nota schedule master and nvoTineClk will not be sent on the network even if the tirre clock input is configured If the ScheduleMaster input is not configured by Select reports the state of the locally connected tine dock Table 21 Control Parameters E Vision Legend Monitor P Parameter S Schematic sa 5 amp oc as Engineering Units English Da Metric or States plus Range o siLow irritDischAirTerrpS 7 Degrees F When the discharge air terrperature falls below Oto 60 LowLirritDischAirTerrp the outdoor air darrpers are dosed to a Degrees C position that corrects the lowterrperature problem If mechanical 1to 16 cooling is active wh
189. r air in not suitable for cooling laqOverRide is the state of the digital input configured and wired to the indoor air quality sensor 1 input shorted means that the indoor air quality is poor and O input open means that the indoor air quality is acceptable This input is used to cause the econorrizer to open to a predeterrrined position when poor indoor air quality is detected SrrokeMonitor is the state of the digital input configured and wired to the indoor smoke sensor 1 input shorted means that smoke is detected and O input open rreans that no srroke is detected DirtyFilter is the state of the digital input configured and wired to the dirty filter sensor 1 input shorted means that filter is dirty and input open rrears that the filter is not dirty ShutDown is the state of the digital input configured and wired to the shut down switch 1 input shorted means that equipment should be shut down and O input open means that the equipment should be running H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 Table 20 Input Output Points Continued E Vision Legend M Monitor P Parameter S Schematic Engineering Units English Metric or States plus Range Jo ee 1 is the state of the digital input configured and wired to Window open sensor switch 1 input open circuit means that the windowis open and input shorted means that the window is closed
190. r from noise and power line spikes cannot be fulfilled This can result in a damaged circuit board and require replacing the controller See Table 10 for a description of the W7750A terminals EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table 10 W7750A Version Description Terminal Terminal Number Description DO6 W1 31 Heat 1 or Reversing Valve for a Heat Pump DO5 W2 30 Heat 2 or Aux Heat for a Heat Pump DO4 Y1 29 Cool 1 or Compressor 1 for a Heat Pump DO3 Y2 28 Cool 2 or Compressor 2 for a Heat Pump DO2 G 27 Fan DO1 NET 26 Network Digital Output DO1 NET 25 Network Digital Output connect to terminal number 22 24 Rc 24 Control power for relay contacts DO2 G DO3 Y1 and DO4 Y2 Rh 23 Control power for relay contacts DO5 W1 and DO6 W2 24 H 22 Power for the controller COM N 21 Return for power to controller E Bus 14 and 15 Echelon communications LONWORKS Bus screw terminals DI 2 12 Digital Input 2 DGND 11 Digital Ground DGND 10 Digital Ground DI 1 9 Digital Input 1 AGND 8 Analog ground Al 1 OHM 7 Analog Input 1 used for Discharge Air Temperature Sensor SET PT 6 Space temperature setpoint potentiometer GROUND 5 Wall Module SENSOR 4 Space temperature sensor BYPASS 3 Space override button LED 2 Space LED for indication of manual occupancy status EARTH GND 1 Earth Ground IMPORTANT
191. r hour depending on the outdoor air ten perature and the MinHtRarrp OdTenpMaxHtRamp and OaTenpMinHtRanp pararreters If there is no outdoor air terrperature sensor available then ubMinHtRarrp is used as the recovery rate NOTE Recovery ramping applies between scheduled heating or cooling setpoint changes fromOC UNOCCUPIED to STANDBY OC UNOCCUPIED to OC OCCUPIED and OC STANDBY to OC OCCUPIED Scheduled setpoint changes fromOC OCCUPIED to UNOCCUPIED or OC OCCUPIED to STANDBY do not use a ramped setpoint but instead use a step change in setpoint Recovery rarrps begin before the next scheduled occupancy time and are rarrped fromthe setpoint for the existing scheduled occupancy state to the setpoint for the next occupancy state AB MinHtRanp ndALX1setPt UbMinHtRanpSO MinHtRamp is the rrinimumbheat recovery ramp rate in degrees F per hour This value is used to control the adaptive recovery rarrp rate during the HEAT recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air ten perature and the MaxHtRamp OdTenpMaxHtRamp and OdTenpMinHtRamp parameters If there is no outdoor air temperature sensor available then MinHtRamp is used as the recovery rate Refer to the NOTE in the contrents colunn for MaxHtRarrp for the conditions that recovery ramping applies to OarTerrpMaxHtRp nciAuxdSetPt ubOdTenpMaxHtRanpSO OdrTerrpMaxHtRarrp is the maxintum outdoor air ten perature pararreter that is
192. r ratings should be used as the worst case values when performing power budget calculations Also the application engineer must consider the possible combinations of simultaneously energized outputs and calculate the VA ratings accordingly The worst case that uses the largest possible VA load should be determined when sizing the transformer LINE LOSS Excel 10 Controllers must receive a minimum supply voltage of 20 Vac If long power or output wire runs are required a voltage drop due to Ohms Law I x R line loss must be considered This line loss can result in a significant increase in total power required and thereby affect transformer sizing The following example is an x R line loss calculation for a 200 ft 61m run from the transformer to a W7750 Controller drawing 37 VA using two 18 AWG 1 0 wires The formula is Loss length of round trip wire run ft X resistance in wire ohms per ft X current in wire amperes From specification data 18 AWG twisted pair wire has 6 52 ohms per 1000 feet Loss 400 ft X 6 52 1000 ohms per ft X 37 VA 24V 4 02 volts This means that four volts are going to be lost between the transformer and the controller therefore to assure the controller receives at least 20 volts the transformer must output more than 24 volts Because all transformer output voltage levels depend on the size of the connected load a larger transformer outputs a higher voltage than a smal
193. r to W7750B C B shown see triangle note 4 uuu uu enregistre eder Fee ego piura asal 43 37 RP7517 B pneumatic transducer to 77502 43 38 Typical doubly terminated daisy chain LONWORKS Bus segment termination module wiring diagram 44 39 LONWORKS Bus termination wiring options 45 40 Temperature sensor resistance 49 41 Location of the Service Pin Button ente tete eue TE e o e Ce e Do Re ER nie 50 42 W7Z50 uz a exes suas 51 43 The T7770C D Wall Modules LED and Bypass pushbutton locations 51 44 The T7560A B Digital Wall Module Bypass pushbutton 51 45 LED and Bypass pushbutton operation 56 46 Setpoint ramping parameters with ramp rate calculation sss 57 47 Setpoint ramping parameters with Setpoint calculation 58 3 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig Fig 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Setpoint ramping parameters with ramp rate calculation sss 58 Schem
194. rate has on the output signal The error rate is how fast the error value is changing It can also be the direction the space temperature is going either toward or away from the setpoint and its speed quickly or slowly A decrease in Derivative Gain causes a given error rate to have a larger effect on the output signal The Control Band is used only for discharge temperature control of modulating outputs which includes controlling the economizer dampers and heating and cooling valves using Cascade Control The Control Band dictates the span through which the discharge temperature must travel to cause the output signal to go from fully closed to fully open Also 10 percent of the Control Band value is the size of the deadband around the setpoint where no actuator motion occurs For example if controlling a cooling valve with Cascade Control enabled and with the discharge temperature within 0 1 X DaTempCICtrlBd of the discharge setpoint there is no change in the current valve position The smaller the Control Band the more responsive the control output A larger Control Band causes more sluggish control Be careful not to set the Control Band too low and cause large over or under shoots hunting This can happen if the space or discharge sensors or wiring are in noisy environments and the value reported to the controller is not stable such that it bounces The Control Band is used only in modulating control and has no purpose when s
195. rature Type RTD Supported Sensors C7100A1015 C7770A1006 C7031B1033 C7031C1031 C7031D1062 C7031F1018 W7750B C only C7031J1050 C7031K1017 The PT3000 sensor is not recommended for floating control real time discharge or return configured as space sensor The PT3000 sensor is intended for monitoring or differential staged control EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Outdoor Air Humidity W7750B C only Type Voltage Current Supported Sensors C7600B1000 and C7600B1018 2 to 10V 7600 1008 4 to 20mA Return Air Humidity W7750B C only Type Voltage Current Supported Sensors C7600B1000 and C7600B1018 2 to 10V 7600 1008 4 to 20 Outdoor Air Enthalpy W7750B C only Type Current Supported Sensors C7400A1004 4 to 20mA Return Air Enthalpy W7750B C only Type Current Supported Sensors C7400A1004 4 to 20mA Air Filter Differential Pressure W7750B C only Type Voltage Supported Sensors Third party 2 to 10V 0 to 5 inw 1 25 kPa differential pressure sensors CO Sensor W7750B C only Type Voltage Supported Sensors Third party 0 to 10V 0 to 2000 ppm CO sensors Monitor Sensor for network use W7750B C only Type Voltage Supported Sensors Third party 2 to 10V 2 to 10 volts displayed DIGITAL INPUTS NOTE Only one of each type of input is allowed For example only one Smoke Monitor is allowed No duplicate Smoke Monitors are usable
196. ressors can be controlled along with up to four stages of auxiliary heat and a heat cool change over valve Including the supply fan the combination of these items may not exceed eight outputs if a W7750B C is used or six outputs for a W7750A The eight outputs on the W7750C consist of five digital and three analog outputs 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Like the W7751 VAV Box Controller the W7750 Controller can monitor a space mounted occupancy sensor and a door window contact These inputs affect the operational mode of the controller see Table 5 for a list of all possible modes of operation The W7750 Controller allows other controllers in the system to use the W7750s physical inputs and outputs A digital input and an analog input can be configured to read switch states and voltage sensor values respectively and send them out over the LONWORKS Bus network The Q7750A Zone Manager can use these values in custom control strategies Additionally two of the W7750 digital outputs are available for control program use These outputs only respond to signals sent over the network and are not controlled by the W7750 internal control algorithms Products Covered This System Engineering Guide describes how to apply the Excel 10 family of W7750 CVAHU Controllers and related accessories to typical applications The specific devices covered include W7750A B C Controllers T7770A through D Wa
197. ring diagram with 4 to 20 mA enthalpy sensors and digital inputs For more information on note 2 refer to Fig 25 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER WINDOWS CONTACTS CONTACTS CLOSED EQUALS WINDOW CLOSED OCCUPANCY SENSOR CONTACTS CLOSED EQUALS OCCUPIED TRIAC EQUIVALENT CIRCUIT W7750B CONSTANT VOLUME AHU CONTROLLER WALL MODULE GROUND V mA GROUND LONWORKS HUMIDITY 4 TO 20 MA LONWORKS BUS JACK FOR LONWORKS BUS NETWORK ACCESS A EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM USE THE HEAVIEST GAUGE WIRE AVAILABLE UP TO 14 AWG 2 0 WITH MINIMUM OF 18 AWG 1 0 FOR EARTH GROUND WIRE A TO ASSURE PROPER ELECTRICAL CONTACT WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE TERMINAL BLOCK A WIRING DIAGRAM SHOWS JUMPER FOR J2 IN FACTORY DEFAULT HIGH SIDE POSITION M11619B Fig 34 W7750B C wiring diagram with C7600C 4 to 20 mA solid state humidity sensor For more information on note 2 refer to Fig 25 74 2958 1 42 TWO OR TWO OR ECONOMIZER THREE WAY THREE WAY DAMPE CHILLER HOT WATER WATER VALVE STEAM VALVE 1 1 ee 11 Y SERIES 70 SERIES 70 VALVE VALVE ACTUATOR ACTUATOR TRIAC EQUIVALENT CIRCUIT W7750C CONSTANT VOLUME AHU CONTROLLER WALL MODULE OR 20 VDC OUT LONWORKS BUS e 2 o DISCHARGE A AIR TEMP LONWORKS BUS JACK FOR LONWORK
198. rreters tum the corresponding auxiliary heat stage on 1 or off O AuxHeatCoolStage4 During MANUAL mode when the node is configured to control a heat purrp and HeatCoolMode is 1 these pararreters tum the corresponding auxiliary heat stage on 1 or off O During MANUAL mode HeatCoolMode determines whether heating or cooling Outputs are tumed on off manually When HeatCoolMode is then cooling loads are controlled When HeatCoolMode is 1 and the node is controlling conventional equipment then heating loads are controlled When HeatCoolMode is 1 and the node is controlling a heat purrp then cooling loads are controlled by Heat Cool Stages and heating stages are controlled by auxiliary heat stages The OVER RELAY is affected HeatCoolMode as configured in During MANUAL mode FanOut tums the fan on 1 or off O During MANUAL mode AuxtEconOutturms the AUX ECON OUT orX1 off O During MANUAL mode OccStatusOut tums the OCCUPANCY STATUS OUT to on 1 not UNOCCUPIED or off O During MANUAL rode Free1Out tums the FREE1 OUT or During MANUAL mode Free2Outturms the FREE2 OUT or H3TIOHLNOO NHY LNVLSNOO O98 V0SZ7M OL TJOX3 8960 Engineering Units English Metric or States plus Range Table 28 Data Share Points 1819 10 ONEA 10 91216 S uoisiA 3 SS925V 09410 SI INVALID SI INVALID SW NUL S
199. ry Capacity 64K ROM PROM 6K reserved for network operations 58K usable for control algorithm code 512 bytes 2K RAM 74 2958 1 Specified Space Temperature Sensing Range 45 to 99 7 to 37 with an allowable control setpoint range from 50 to 90 F 10 to 32 C when initiated from the network 55 to 85 F 13 to 29 when configured and connected to T7770 or T7560 Wall Modules EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER At2 AF3 AI OHM vim GND v 20VDC 9 10 11 12 13 M17489 Fig 6 Excel 10 W7750C Constant Volume AHU Controller 15 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER 30129 28127 26 25 24 22 21 20 19 18 16 VA 0 4 Jovac zs 11 4 5 ao Aas DI 4 cppD 3 D1 2 D 1 1 24 cov our four oUT oUTOUT 1 2 3 E JBYPASSISNSR Al SETPT Al 1 Al GND GND OHM GND on 55 1 2 3 4 5 6 71 8 D D D D 2 AES Al Br D imal GND ma our BUS ux D D 10 11 12 13 14 15 J3 17490 Fig 7 W7750B C construction mm W7750C shown has three 4 to 20 mA analog outputs Communications The W7750A B C Controller uses a Free Topology Transceiver FTT transformer coupled communications port runnin
200. s for monitoring multiple windows to verify that the window s are closed The algorithm expects a contact closure to indicate the window is closed If an open window is detected the algorithm changes the mode of operation to FREEZE PROTECT which shuts down the control functions and watches for low space temperature conditions The frost protection setpoint is 46 4 F 8 C and the frost alarm occurs at 42 8 F 6 NOTE This is the same NOTE as in the Occupancy Sensor section The Excel 10 has limited power available only 9 mA at 4 8 volts for checking the digital inputs for contact closures It is very important that the device used contains high quality noncorroding contacts with resistivity that does not degrade that is increase over time Use noble metal such as gold or silver or pimpled or sealed contacts to assure consistent long term operation Wall Module Options As previously discussed there are four basic varieties of the T7770 Wall Modules and two of the T7560 Digital Wall Module see the Product Names and the Construction sections Also a T7770 and T7560 Wall Modules can be shared among two or more W7750s The control algorithm must be given this wall module information when configuring the W7750 see Excel E Vision User s Guide form 74 2588 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Dirty Filter Monitor The air filter in the air handler can be monitored by the W7750 and an alarm is issu
201. s one reserved for the Bypass pushbutton LED digital output only for the wall module LED 2 5V at 3 mA Six 24 Vac relay digital outputs 1 5A relays rated at 7 5A inrush current The W7750B C Units support the following hardware features Four 20 Kohm NTC 1000 through 150 000 ohm or PT3000 250 through 12 000 ohm resistive analog inputs one reserved for space temperature and one reserved for the setpoint knob Two 0 2 to 10 VDC or 2 to 20 mA user selectable analog inputs Five dry contact digital inputs one reserved for the Bypass pushbutton Eight on the W7750B five on the W7750C 24 Triac digital outputs 500 mA MAX The W7750C Unit also supports three 4 to 20 analog outputs LED digital output only for the wall module LED T7770 models or LCD T7560A B 2 5V at 3 mA One 20 Vdc power supply for auxiliary devices with a maximum current of 50 mA ANALOG INPUTS NOTE Only one of each type of input is allowed For example only one Outdoor Air Temperature sensor is allowed No duplicate Outdoor Air Temperature sensors are usable on the same controller Space Temperature Type RTD Supported Sensors T7770A B C D T7560A B Discharge Air Temperature Type RTD Supported Sensors C7100A1015 C7770A1006 C7031B1033 C7031C1031 C7031D1062 C7031F1018 W7750B C only C7031J1050 C7031K1017 Outdoor Air Temperature Type RTD Supported Sensors C7170A1002 Return Air Tempe
202. schgTenpeEnror All control functions associated with the failed sensor disabled as if the sensor was not configured RtriTerrpError All control functions associated with the failed sensor disabled as if the sensor was not configured RtriHurrError All control functions associated with the failed sensor are disabled as if the sensor was not configured H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 Table 23 Status Points Continued Engineering Units English Metric or States plus Range error_bit 1 Byte Offset 1 Bit Offset O RtnEnthalpyerror error_bit 1 Byte Offset 1 Bit Offset 2 SpaceCO2Error error_bit 1 Byte Offset 1 Bit Offset 3 FilterStaticPresError eror Byte Offset 1 Bit Offset 4 ADCalErmor 9815 10 enjeA 10 91215 E Vision Legend M Monitor P Parameter S Schematic RtnEnthalpyErmor All control functions associated with the failed sensor are disabled as if the sensor was not configured MonitorSensorError All control functions associated with the failed sensor are disabled as if the sensor was not configured SpaceCC2Error All control functions associated with the failed sensor are disabled as if the sensor was not configured FilterStaticPresError All control functions associated with the failed sensor are disabled as if the sensor was not co
203. se different wire types or gauges on the same LONWoRKS Bus segment The step change line impedance characteristics causes unpredictable reflections on the bus When using different types is unavoidable use a Q7751A B Router at the junction In noisy high EMI environments avoid wire runs parallel to noisy power cables or lines containing lighting dimmer switches and keep at least 3 in 76 mm of separation between noisy lines and the LONWORKS Bus cable Make sure that neither of the LoONWonks Bus wires is grounded Power Wiring A power budget must be calculated for each Excel 10 W7750 Controller to determine the required transformer size for proper operation A power budget is simply the summing of the maximum power draw ratings in VA of all the devices to be controlled by an Excel 10 W7750 Controller This includes the controller itself the equipment actuators ML6161 or other motors and various contactors and transducers as appropriate for the Excel 10 configuration POWER BUDGET CALCULATION EXAMPLE The following is an example power budget calculation for a typical Excel 10 W7750B Controller Assume a W7750 unit with a fan two stages of D X cooling modulating steam valve for heating and modulating economizer dampers The power requirements are DeviceVA Information Obtained from Excel 10 W7750B C 12 0 W7750 Specification Data Controller ML6161 2 2 TRADELINE Damper Actuator Catalog R8242A 210 TRADE
204. sed to calculate the cool recovery rarrp rate setpoint This value is used to control the adaptive recovery rarrp rate during the COOL recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air terrperature and the MaxClRarrp MinClRarrp and OdTerrpMinClRanqo parameters If there is no outdoor air tenqperature sensor available then MinClRarrp is used as the recovery rate Refer to the NOTE in the comments colum for MaxHtRarrp for the conditions that recovery rarrping applies to OdrTerrpMinClRarrp is the rrininmumoutcoor air terrperature pararreter that is used to calculate the cool recovery rarrp rate setpoint This value is used to control the adaptive recovery rate during the COOL recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air terrperature and the MaxClRarrp MinClRarrp and OdTenpMaxClRanp pararreters If there is no outdoor air tenqperature sensor available then MinClRarrp is used as the recovery rate Refer to the NOTE in the corrrrerts colum for MaxHtRarrp for the conditions that recovery rarrping applies to If Config EconEnable is OD TEMP and the outdoor terrperature is less than OdEconEnableTerrp then outdoor air is judged suitable to augnrent mechanical cooling If Config EconEnable is SINGLE ENTH and outdoor terrperate is less than UbOdEconEnableTemp high limit then outdoor air may be judged Suitable to augment mechanica
205. sor must be physically connected to the Excel 10 W7750 Controller A discharge temperature signal cannot be brought into the controller through the LONWoRKS Bus network Table 14 Common Configuration Options Summary For W7750A B C Controllers Option Possible Configurations Common W7750 Models Supply Fan Mandatory Digital Output Type of Air Handler Conventional Heat Pump Occupancy Sensor None Connected Contacts closed equals Occupied Network Occ Unocc signal received via the LONWoRKS Bus network Window Sensor None Physically Connected Contacts closed equals window closed Network Window Open Closed signal received via the LONWORKS Bus Wall Module Option Local direct wired to the controller The T77560A B has no LONWORKS Bus access Network sensor value received via the LONWORKS Bus Wall Module Type Sensor only All wall modules have a LONWORKS Bus access Sensor and Setpoint adjust jack except T7560A B Sensor Setpoint adjust and Bypass Sensor and Bypass Smoke Emergency Initiation None Physically Connected Contacts closed equals smoke detected PM A PO PO N gt Nj Network Emergency Normal signal received via the LONWORKS Bus 53 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Table
206. t from a Sched Master configured W7750 controls the occupied mode SCHEDULE MASTER Sched Master Sched Master is the state of a digital input that is configured and wired to the W7750 If the Sched Master input is closed input shorted the node is the schedule master and the state of the locally connected time clock will be broadcast out over the LONWORKS Bus to the other W7750 controllers If the Sched Master input is open then the node is not a schedule master and the local time clock will not be sent out over the LONWoRKS Bus even if the time clock input is configured However the DestSchedOcc network input received from a central control has a higher priority than the local time clock and therefore overrides the local time clock The W7750 controllers automatically bind without the need for a configuration tool 57 SETPOINT RAMPING The W7750 Controller incorporates a ramping feature that gradually changes the space setpoints between occupancy modes This feature is only operational if the network variable inputs DestSchedOcc TodEventNext and Time Until Next Change Of State TUNCOS are being used to change the W7750 Occupancy mode The applicable Setpoints are OaTempMinHtRamp OaTempMaxHtRamp MinHtRamp and MaxHtRamp for HEAT mode operation and OaTempMinClRamp OaTempMaxClRamp and MaxClRamp for the COOL mode operation See Fig 46 fora pictorial representation of how these setpoints interact During
207. taged control is configured Appendix B Sequences of Operation This Appendix provides the control sequences of operation for the models of the Excel 10 W7750 CVAHU Controller The W7750A B C Controllers can be configured to control a wide variety of possible equipment arrangements Table 14 and 15 copied from Tables 3 and 4 summarize the available options This Appendix provides a more detailed discussion of these options EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Common Operations The Excel 10 W7750 Controller applications have many common operations that are applicable regardless of the type of heating cooling or economizer equipment configuration These operations are available to the W7750A and the W7750B C Versions of the CVAHU Controller and the I O and network configurations for them are summarized in Table 14 Available input options are from the wall module and the hard wired analog and digital inputs Each application can have only a subset of these devices configured based on the number of physical I O points available However some of the inputs are available over the LONWoRKS Bus network NOTE Each W7750 Controller must have a space temperature sensor input either wired directly to the controller or shared from another LONWORKS Bus device and must have a digital output configured for controlling the supply fan In addition if modulating economizer control is desired a discharge air temperature sen
208. te with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut6 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut7 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE DigitalOut8 is a byte with a bit for every physical digital output On is a 1 TRUE and off is a O FALSE Digitallni is a byte with a bit for every physical digital input If the input is shorted to ground the bit is a zero or FALSE If the input is open the bit is oneor TRUE Digitalln2 is a byte with a bit for every physical digital input If the input is shorted to ground the bit is a zero or FALSE If the input is open the bitis oneor TRUE H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 8960 22 DrtyFilterSw Table 20 Input Output Points Continued Engineering Units English Metric or States plus Range S uoISIA 3 ubDigitalln Byte Offset 25 Bit Offset 5 Digitalln3 ubDigitalln Byte Offset 25 Bit Offset A Digitalln4 pu Hbi ud s p poe DirtyFilter FALSE TRUE ShutDown FALSE FALSE TRUE 1 E Vision Legend M Monitor P Parameter S Schematic Digitalln3 is a byte with a bit for every physical digital input If the input is shorted to ground the bit is zero or FALSE If the input is open the bitis oneor TRUE Digitalln4 is a
209. ter pressure reported in Data1 FilterPressure exceeds FilterPressStPt then a DIRTY_FILTER alarmis generated and Datal DirtyFilter is LowstPtis the lowest value reported for the setpoint knob Dependert on the configuration of the setpoint knob see Corfig SetPntnob this setting is either absolute degree Fahrenheit 50 to 90 in case of absolute setpoint knob configuration or relative delta degree Fahrenheit 9 to 49 in case of relative HighStPt is the highest value reported for the setpoint knob Dependert on the configuration of the setpoint knob see Config SetPnitkKnob this setting is either absolute degree Fahrenheit 50 to 90 in case of absolute setpoint knob configuration or relative delta degree Fahrenheit 9 to 49 in case of relative setpoint knob configuration H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 ZL 8960 Table 21 Control Parameters Continued Engineering Units English User Address Field Name Metric or States plus Range GainCoolProp ndALa2setPt ubKpCoolS2 This is the throttling range for the proportional portion of the PID loop gain for the cooling control loop GainHeatProp ndALa2setPt This is the throttling range for the proportional portion of the PID loop gain for the heating control loop E Vision Legend M Monitor P Parameter S Schematic ayes 10 Jo 9jejs S W uoisiA 3 GainHeatint ndALa2s
210. that is shown H3TIOHLNOO NHY IWNTOA LNVLSNOO 04 VOSZZM OL TJOX3 8960 89 Field Digitallr 1 Digitallr 2 Engineering Units English Metric or States plus Range OCC SENSOR OCC TIME CLOCK PROOF AIR FLOW ECON ENABLE IAQ OVERRIDE SMOKE MONITOR FILTER SHUT DOWN WINDOW OPEN MONITORS CHED MASTER UNUSED DI OCC SENSOR OCC TIME CLOCK PROOF AIR FLOW ECON ENABLE IAQ OVERRIDE SMOKE MONITOR FILTER SHUT DOWN WINDOW OPEN MONITOR SCHED MASTER UNUSED DI Table 20 Input Output Points Continued 000 U A w N 94815 JO ANLA SHCED MASTER IN UNUSED DI m lt 2 5 5 x 2 55900 12911 E Vision Legend Monitor P Parameter S Schematic Digitallr 1 specifies which logical switch type is connected to the flexible digital input switch channel according to the enurrerated list that is shown in the Engineering Units States colurm and Digitall n1 are the only inputs available in the W7750A controller The controller is configured at the factory with this user address configured to SCHED MASTER Digitalln 2 specifies which logical switch type is connected to the flexible digital input switch channel according to the enurrerated list that is shown in the Engineering Units States colunm and Digitallr 1 are the only inputs available in the W7750A controller H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 69
211. the controllers See Application Step 6 Configure Controllers for information on the various Excel 10 parameters and on Excel 10 point mapping Step 2 Determine Other Bus Devices Required A maximum of 62 nodes can communicate on a single LONWoRKS Bus segment Each W7750 CVAHU Controller constitutes one node If more nodes are required a Q7751A B Router is necessary Using a router allows up to 125 nodes divided between two LONWoRKS Bus segments The router accounts for two of these nodes one node on each side of the router a Q7750A Excel 10 Zone Manager takes one node and two nodes are available for operator terminal nodes leaving 120 nodes available for Excel 10 Controllers All 120 controllers are able to talk to each other through the router A Q7750A Excel 10 Zone Manager is required to connect the LONWORKS Bus to the standard EXCEL 50009 OPEN System C Bus Each Excel 10 Zone Manager supports up to 120 Excel 10 Controllers This limit is set in the Excel 10 Zone Manager database as an absolute maximum 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Each LonWorks Bus segment is set up with two unused nodes to allow for a CARE E Vision operator terminal to be connected to the LONWORKS Bus Multiple CARE E Vision terminals can be connected to the LONWoRKS Bus at the same time Table 7 summarizes the LONWORKS Bus segment configuration rules Table 7 LoNWoRks Bus Configuration Rules And Device Node Nu
212. the number of W7750 Controllers T7770 and T7560 Wall Modules required for each model type Also check the number and type of output actuators and other required accessories When planning the system layout consider potential expansion possibilities to allow for future growth Planning is very important to be prepared for adding HVAC systems and controllers in future projects T7560 Wall Modules can only be hard wired they have no LONWORKS Bus access T7770 Wall Modules can be installed as either hard wired devices or additional wiring can be run to them for the LONWORKS Bus network to allow a operator terminal to have access to the LONWORKS Bus The application engineer needs to determine how many wall modules T7770s and T7560s are required T7770 Wall Modules except the T7770A1006 and the T7770A1014 can be connected via the LONWORKS Bus jack Also the application engineer needs to know how many T7770s without LONWORKS Bus network connections are being installed on the job and then clearly document which wall modules if any have network access This information is required during installation to ensure that the proper number and type of wires are pulled to the wall modules and the building operators are informed about where they can plug in to the LONWORKS Bus network with a portable operator terminal see Fig 18 19 and 20 Refer to Step 4 Prepare Wiring Diagrams for details about the a
213. ther 74 2958 1 54 LONWORKS Bus device If no valid room temperature value is available to the W7750 Controller the temperature control algorithm in the controller is disabled causing the heating cooling and economizer control outputs to be turned off If the W7750 Controller is configured for Continuous Fan rather EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER than Intermittent Fan see Fan Operation in this Appendix and the mode is Occupied when the RmTemp value becomes invalid the fan continues to run REMOTE SETPOINT RmtStptPot This is the Setpoint Potentiometer contained in the T7770 or the T7560A B Wall Module When configured this occupant value is set to calculate the actual cooling or heating Occupied Setpoint There are two options for how to calculate the actual setpoint to be used by the temperature control algorithm Offset and Absolute Middle When SetPtKnob is set to Offset the Wall Module setpoint knob represents a number from 9 to 9 F 5 to 5 which is added to the software occupied setpoints for the heat and the cool modes CoolOccSpt and HeatOccSpt When SetPtKnob is set to Absolute Middle the setpoint knob becomes the center of the Zero Energy Band ZEB between the cooling and heating occupied setpoints The size of the ZEB is found by taking the difference between the software heating and cooling occupied setpoints therefore for Absolute Middle the actual setpoints are fo
214. tion 50 percent with the PwmZeroScale 0 1 seconds PwmFullScale 25 5 seconds and the PwmPeriod 25 6 seconds There are 256 increments available so the number of increments required for 50 percent would be 0 5 X 256 or 128 The time for each increment for this industry standard pulse time is 0 1 seconds The pulse width is the minimum time 0 1 second the number of increments 128 times the 0 1 second plus 0 1 12 9 seconds The W7750B C Controllers would command the valve output on for 12 9 seconds for the PwmPeriod of 25 6 seconds to maintain the valve position at 50 percent OUTDOOR AIR LOCKOUT OF HEATING COOLING A mechanism is provided in the W7750 to disable the heating equipment if the outdoor air temperature rises above the OaTempHtLkOut setpoint Similarly the cooling equipment is disabled if the outdoor air temperature falls below the OaTempCILkOut setpoint The algorithm supplies a fixed 2 F 1 1 C hysteresis with the lock out control to prevent short cycling of the equipment ECONOMIZER DAMPER CONTROL A mixed air economizer damper package can be controlled to assist mechanical cooling in maintaining the discharge air at setpoint Therefore if modulating economizer damper control is desired a discharge air temperature sensor is required If the outdoor air is not currently suitable for cooling use see the Economizer Enable Disable Control section the outdoor air damper is held at the user settable minimum
215. to 30 Vac at 25 mA MIN to 500 mA MAX current for any voltage N CAUTION When any device is energized by a Triac the device must be able to sink a minimum of 25 mA NOTE Triacs sink current to the 24 Vac common COM terminal on the W7750B C Models see Fig 30 for wiring example IMPORTANT If non Honeywell motors actuators or transducers are to be used with Excel 10 Controllers Triac com patibility must be verified see previous NOTE DIGITAL OUTPUTS COOL STAGE 1 COOL STAGE 2 COOL STAGE 3 COOL STAGE 4 HEAT STAGE 1 HEAT STAGE 2 HEAT STAGE 3 HEAT STAGE 4 CHANGE OVER RELAY FAN AUX ECON OCCUPANCY STATUS ECON OPEN ECON CLOSE COOL OPEN COOL CLOSE HEAT OPEN HEAT CLOSE HEAT COOL STAGE 1 HEAT COOL STAGE 2 HEAT COOL STAGE 3 HEAT COOL STAGE 4 FREE1 NOTE Free1 Free1 Pulse On and Free Pulse Off are three separate and unique digital output points Because they are not related they all can be configured in a CVAHU controller at the same time FREE2 FREE1 PULSE ON FREE1 PULSE OFF ECON PWM HEAT PWM COOL PWM UNUSED 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER Wall Modules The T7770 or T7560 Wall Modules for the Excel 5000 and Excel 10 Controllers are available in a variety of configurations The models 7770 1006 and T7770C1002 are shown in Fig 10 The T7770B D are the same physical KNOCKOUTS FOR EUROPEAN APPLICATIONS Honeywell
216. trical demand signal the controller applies DicBUmpTemp amount to the current actual space temperature setpoint value The setpoint is always adjusted in the energy saving direction This means that if the W7750 Controller is in Cooling mode the DLC offset bumps the control point up and when in Heating mode bumps the control point down EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER DIRTY FILTER MONITOR the START_UP_WAIT mode for a pseudo random period The air filter in the air handler can be monitored by the W7750 depending on neuron_id between 12 and 22 seconds and and an alarm issued when the filter media needs replacement then transitions to one of the operating modes depending on The two methods of monitoring the filter are the inputs that are read from the physical and network inputs 1 Adifferential pressure switch whose contacts are con The pseudo random period prevents multiple controllers from nected to a digital input on the W7750A or W7750B C simultaneously starting major electrical loads when power is and restored to a building 2 A2 to 10V differential pressure sensor wired to a current input on the W7750B C If the analog input NOTES After a controller download via Care E Vision the sensor is used its measured value 0 to 5 inw delayed reset time is bypassed and the controller 0 to 1 25 kPa is compared to a user selectable starts after a 40 second initialization setpoint FltrPressStPt valid range 0 to 5 in
217. ue is O the compressor is disabled in heat purrp applications If the node receives this combination of state and value then state is set to SVV OFF If the state is SW_ON and the value is not zero the compressor is enabled in heat pump applications If the state is SVV NUL or other the network variable is not bound and is ignored DestWSHPEnable 5 state SW OFF X Refer to WSHPEnable value SW ON SW NUL D e 5 5 lt NE 5 Em Free1 value network variable controls the spare or Free digital output for auxiliary functions nviF reel controls the FREE1 OUT FREE1_OUT_PULSE_ON andFREE1 OUT PULSE OFF outputs only H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 8960 Table 22 Energy Management Points Continued E Vision Legend M Monitor P Parameter S Schematic Engineering Units English Metric or States plus Range 181 10 ONEA 10 91216 jeuBiq TirreClk value rxN4 TirreClk allows a tine clock at one node to be shared with other nodes over the network is ORed with the local tine dock sensor and the results are placed in Datal OccTineClock TirreClk is received fromanother node and may have the following values If the state is SW OFF the space is scheduled to be unoccupied If the state is SW and the value is the space is scheduled to be unoc
218. und as follows ActualCoolSpt RmtStptPot CoolOccSpt HeatOccSpt 2 ActualHeatSpt RmtStptPot CoolOccSpt HeatOccSpt 2 During Standby and Unoccupied times the remote setpoint pot is not referenced and the software setpoints for those modes are used instead SETPOINT LIMITS LoSetptLim AND HiSetptLim Remote setpoint pot limits are provided by LoSetptLim and HiSetptLim The occupied setpoints used in the control algorithms are limited by these parameters When the setpoint knob is configured to be of type Absolute Middle the lowest actual setpoint allowed is equal to LoSetptLim and the highest actual setpoint allowed is equal to HiSetptLim When the setpoint knob is configured to be an Offset type the lowest actual setpoint allowed is equal to HeatOccSpt LoSetptLim and the highest allowed is equal to CoolOccSpt HiSetptLim BYPASS MODE StatusOvrd AND StatusLed During Unoccupied periods the facility occupant can request that Occupied temperature control setpoints be observed by depressing the Bypass pushbutton on the wall module When activated the controller remains in Bypass mode until 1 Bypass Duration Setting has timed out BypTime or 2 User again presses the Wall Module pushbutton to switch off Bypass mode or 3 Occupancy schedule DestSchedOcc network input or TimeClckOcc digital input switches the mode to Occupied 4 User sets the DestManOcc network point to Not Assigned The LED on the T7770 Wall
219. upply fan can be controlled in one of two different ways In Continuous Fan mode the fan runs whenever the controller is in Occupied mode When in 74 2958 1 58 Standby or Unoccupied modes the fan cycles on with a call for cooling or heating if the FanOnHtMode parameter is set In Intermittent Fan mode the fan cycles on with a call for cooling or heating if the FanOnHtMode parameter is set and cycles off when the space temperature control is satisfied The fan control supports an optional Proof of Air Flow digital input that allows monitoring of the supply fans status If the fan is commanded on the Proof of Air Flow digital input is checked up to three times to verify that the fan is running after an initial delay of FanOnDelay seconds user settable If the fan fails to start the CVAHU must be reset by first cycling CVAHU power If this does not work set DestManMode to Manual and then back to Enable After a reset the application restarts all outputs switch off and auto control is enabled Also the W7750 Controller provides fan run on operation that keeps the fan running for a short time after heating or cooling shuts off The amount of time that the fan continues to run is set in FanRunOnHeat for heating mode and FanRunOnCool for cooling mode WINDOW SENSOR StatusWndw The digital input for a window contact provides the algorithm with a means to disable its temperature control activities if someone has opened a window
220. used to set the economizer darrper to Aux1SetPt EconlagPos and to possibly tum on the heat according to the state of ndALX1setPt siPw7PeriodS4 100 x When pulse width modulation is used the period of one pulse width rrodulation cycle is PvurPeriod seconds The smallest resolution is When pulse width modulation is used the period of a pulse for zero percent output valve at open position is PvurOpcrtS4 seconds The srrallest resolution is O 1 seconds E Vision Legend IM Monitor P Parameter S Schematic 91015 Jo 10 ees S d W UoISIA 3 559905 1290 BiJuo9 PwreroScale 5 siPvurOpcrtS4 to PwrrFullScale 1 siPwrriloopcniS4 5 to BypTine ndALa2setPt Er to FltrPressStPt ncAu2SetPt ubFilterPressStPtS5 inw kPa 05 Oto 5 Oto 1 25 When pulse width modulation is used the period of a pulse for full scale output darrper or valve at open position is PwrrilOOpcrt seconds The srrallest resolution is O 1 seconds uiBypassTirre is the time between the pressing of the override button at the wall module or initiating BYPASS via ManOcc and the reum to the original occupancy state When the bypass state has been activated the bypass tirrer is set to BypassTirre x If a filter pressure sensor is configured by loSelect and the fil
221. used to calculate the heat recovery ramp rate setpoint This value is used to control the adaptive recovery rarrp rate during the HEAT recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air terrperature and the MaxHtRamp MinHtRamp and OdTenpMinHtRanp pararreters If there is no outdoor air terrperature sensor available then MinHtRarrp is used as the recovery rate Refer to the NOTE in the comments colum MaxHtRamp for what conditions that recovery ramping applies to OarTerrpMinHtRp ndAuxisetPt ubOdTenpMinHtRanpSO OdrerrpMinHtRarrp is the minimum outdoor air terrperatu re pararreter that is used to calculate the heat recovery ramp rate setpoint This value is used to control the adaptive recovery rarrp rate during the HEAT recovery period The setpoint is changed ata rate in degrees F per hour depending on the outdoor air ter perature and the MaxHtRamp MinHtRamp and OdTenpMaxHtRamp pararreters If there is no outdoor air terrperature sensor available then MinHtRarrp is used as the recovery rate Refer to the NOTE in the corrrrerts colum MaxHtRamp for what conditions that recovery rarrping applies to OaTerrpClLkOut nciAurdSetPt UbOdClLockOutTenpSO Degrees F When the outdoor air ten perature is less than OdClLockOutTemp Oto 90 the cooling is disabled H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM 01 TJOX3 Table 21 Control Parameters Continued lt sa
222. utputs are driven closed or off with the exception that occurs during IAQ Override Operation see above and the staged cooling outputs are enabled for use When in the COOL mode the PID cooling control algorithm compares the current space temperature to the EffectiveCoolSetPt and NO STAGES 25 33 CONFIGURED ONE STAGE STAGE 1 TWO STAGES CYCLING STAGE 1 THREE STAGES CYCLING STAGE 1 LOCKED ON STAGE 2 CYCLING STAGE 1 CYCLING FOUR STAGES STAGE 1 LOCKED ON STAGE 2 CYCLING calculates a PID error signal This error signal causes the cooling stage outputs to be cycled as required to drive the space temperature back to the setpoint Fig 50 illustrates the relationship between PID error and staged output activity As the error signal increases and the space temperature is getting farther away from setpoint or is remaining above setpoint as time elapses additional stages of cooling are energized until if PID error reaches 100 percent all configured stages are on 66 75 ALL STAGES LOCKED ON CYCLING STAGE 1 LOCKED ON STAGE 2 CYCLING ALL STAGES LOCKED ON STAGE 1 2 LOCKED ON STAGE 3 CYCLING ALL STAGES LOCKED ON STAGE 1 2 LOCKED ON STAGE 3 CYCLING STAGE 1 2 3 LOCKED ON STAGE 4 CYCLING ALL STAGES LOCKED ON M10112 Fig 50 Staged output control versus PID Error Ifeconomizer dampers are configured and the outdoor air is suitable for free cooling the economizer operates as th
223. ve c 20K of control logic multiple time programs ten switching tables and ten control loops Use Fig 51 to determine the number of Excel 10s that can be connected to the Zone Manager NOTE More than 60 Excel 10s requires a Router 4 Repeat for each Q7750A Excel 10 Zone Manager in a project A NO TIME PROGRAM NO CONTROL LOOPS 920 NO SWITCHING TABLES 900 900 895 B 10K CONTROL PROGRAM FOR EXAMPLE 800 1 TIME PROGRAM 800 5 CONTROL LOOPS 5 SWITCHING TABLES NUMBEROF 765 NUMBER OF C BUS POINTS 740 C BUS POINTS EXCEL 10 EXCEL 10 re m m Me PLUS ZONE PLUS ZONE MANAGER C 20K CONTROL PROGRAM MANAGER POINTS I E MULTIPLE TIME PROGRAMS POINTS 10 CONTROL LOOPS 10 SWITCHING TABLES 610 600 600 585 20 60 120 OR LESS ADD ROUTER NUMBER OF EXCEL 105 F M8729 Fig 51 Point capacity estimate for Zone Manager The exact equation for calculating memory size follows Memory size 21 780 4096 in case of a time program CARE Control Program 14 x time points x Excel 10 units 50 x Excel 10 units map complexity x Excel 10 units x mapped points 57 x C Bus points 7488 x Excel 10 types Where Time points number of switch points in time program per Excel 10 109 Excel 10 units number of attached Excel 10s C Bus points including mapped points and others for example remote points Mapped points number of mapped points per Excel 10 including One to Many and Many to One
224. w 0 to 1 25 kPa and the Dirty Filter alarm is issued Not all network inputs can be received during the when the pressure drop across the filter exceeds the START UP WAIT period because many network setpoint variables are updated at a slower rate therefore some control decisions can be considered tempo START UP rarily inappropriate START UP WAIT is the first mode after application restart or power up During START UP WAIT the analog and digital Temperature Control Operations inputs are being read for the first time no control algorithms are active and the physical outputs fan and heat cooling stages are in the de energized position The node remains in See Fig 49 for a diagram of a typical W7750 Unit OA TEMP LOB olblolololololololololololololo ll 7 Honeywell EXCEL 10 W7750 CVAHU lL VAVAVAVAVAVAVAVAVAVAVAVAVAVAY ololololololololololololololol ol RA TEMP RETURN T7770 OR T7560A B DISCHARGE AIR AIR M17488 WINDOW CONTACT CC CEILING OCCUPANCY SENSOR Fig 49 Schematic diagram for a typical W7750B Unit 59 74 2958 1 EXCEL 10 W7750A B C CONSTANT VOLUME AHU CONTROLLER STAGED COOLING CONTROL The Excel 10 W7750 Controller supports up to four stages of D X cooling As space temperature rises above the current Cooling Setpoint the controllers mode of operation is switched to the COOL mode When in the COOL mode all heating o
225. where between OCCUPIED and OC UNOCCUPIED TineCickOcc nvoDatal OccTirreClock OccTirreClock shows the state of the physical time clock rvoCtiDataG1 input via rvolO OccTirreClock ORed with rM TirreClk Valid enumerated values ST OFF means UNOCCUPIED when either the time clock input is configured and nvolO OccTineClock is O and is not SW ONorrMrTirreClkstate is OFF and nvolO OccTIrreClock is not 1 ST ON means OCCUPIED when either the tine clock input is configured and nvolO OccTirreClock is 1 or rviTirreClk state is SVV ON ST rreans that the local time dock input is not configured by nciloSelect and rwiTirreClk state is SV There is tine clock configured or bound to the node H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 OC OCCUPIED OC UNOCCUPIED OC BYPASS OC STANDBY OC NUL nvoDetal OC OCCUPIED rwoCtiDataG1 OC UNOCCUPIED OC BYPASS OC STANDBY OC NUL StatusOcysen nvoDatal rvoCtiDataG1 StatusEconEn nvoDatal EconEnable rvoCtiDataG1 SaFanStatus nvoDatal ProofAirFlow rvoCtiDataG1 nvoDatal siCalcODEnthalpyS7 rwoCtiDataG1 Oto 100 nvoDatal siCalcRAEnthalpyS7 rwoCtiDataG1 Oto 100 E L Engineering Units English Metric or States plus Range Table 23 Status Points Continued m lt 2 2 E IJ 2 OC NUL zi
226. y 1 1970 It is represented in the Intel Format FanMode AUTO FAN AUTO FAN FanMode specifies the operation of the fan If the FanMode is CONTINUOUS_FAN then the fan cycles on and off with demand for cooling and may cycle with heating if FanOnHeat is TRUE If the FanMode is 1 CONTINUOUS then the fan runs continuously when the effective occupancy is OC_OCCUPIED or OC_BYPASS The fan cycles on and off with demand for cooling and may cycle with heating if FanOnHeat is TRUE during the OC_UNOCCUPIED or OC_STANDBY modes 8960 E Vision Legend IM Monitor Parameter S Schematic NOTE Physical O points that are configurable are in Table 20 9181510 enjeA Jo 91216 S W uoisiA 3 559095 1290 luo v6 oa UA UMS DIGITAL IN ECON NUL EconEnable specifies the method used to detemine when outside air is OD TEMP suitable for use to augment cooling The valid values are according to the OD ENTH A TYPE enurrerated list that is shown in the Engineering Units States colunn OD ENTH B TYPE OD ENTH C TYPE OD ENTH D TYPE DIFF SINGLE ENTH DIFF ENTH ECON NUL FAN OFF DAMPER CLOSED FAN OFF DAMPER _ SrrokeCortrol specifies the operation of the economizer and the EAN ON DAMPER OPEN CLOSED fan when the mode is SMOKE EMERGENCY FAN ON DAMPER CLOSED ubHeatCpn 21012 HeatCph specifies the rric load nurrber of
227. y sensor at another node to be used as SNVT occupancy OC UNOCCUPIED 1 the occupancy sensor for this node and is typically bound to SensorOcc of OC BYPASS 2 another node The rMSersorOcc input must show OC UNOCCUPIED for OC STANDBY 300 seconds before it is used by the controller for triggering UN OC OC NUL operation This rrekes it possible for several occupancy sensors to be ORed together by binding themall to 5 If any bound Occupancy sensor shows occupancy then SensorOcc shows occupancy for up to 300 seconds after the last sensor shows OCCUPIED The valid states have the following meanings OCCUPIED indicates occupied BYPASS OC STANDBY and all unspecified values indicates the sarre as OCCUPIED UNOCCUPIED or OC indicates not occupied SrcOccSensor nvoSensorOcc OC OCCUPIED OC NUL mvoSensorOcc is an output showing the current state of the hard wired SNVT occupancy OC UNOCCUPIED 1 Occupancy sensor The valid states are as follows OC OCCUPIED OC BYPASS 2 indicates that the space is occupied UNOCCUPIED indicates that the OC STANDBY 3 space is not occupied means no output is available because itis OC NUL 255 not configured D ola gig S 219 9 2 H3TIOHLNOO NHY LNVLSNOO 04 VOSZZM OL TJOX3 Table 26 LoNMARKG Open System Points Continued 9 m E Vision Legend Monitor P Parameter S Schematic

Honeywell W7750A User's Manual

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