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Application program for Carel pCO2, pCO3, pCOxs User manual

1. FI Setp R W Ag Value to be added to or subtracted from the value read by the floating setpoint C probe Value read by the probe Belimo 1 serial number 1 R Ah Serial number of the Belimo device configured Belimo 1 R Ah Software version of the Belimo device configured Ver BIOS 1 Belimo 1 R Ai Type of Belimo device configured Type 1 Belimo 1 R Ai Current position of the Belimo device configured Actual pos 1 Belimo 2 serial number 2 R Aj Serial number of the Belimo device configured Belimo 2 R Aj Software version of the Belimo device configured Ver BIOS 2 Belimo 2 R Ak Type of Belimo device configured Type 2 Belimo 2 R Ak Current position of the Belimo device configured Actual pos 2 Belimo 3 serial number 3 R AI Serial number of the Belimo device configured Belimo 3 R Al Software version of the Belimo device configured Ver BIOS 3 Belimo 3 R Am Type of Belimo device configured Type 3 Belimo 3 R Am Current position of the Belimo device configured Actual pos 3 Belimo 4 serial number 4 R An Serial number of the Belimo device configured Belimo 4 R An Software version of the Belimo device configured Ver BIOS 4 Belimo 4 R Ao Type of Belimo device configured Type 4 Belimo 4 R Ao Current position of the Belimo device configured Actual pos 4 Belimo 5 serial number 5 R Ap Serial number of the Belimo device configured Belimo 5 R A
2. In conditions 3 and 4 described above in the graphs it is useful to open the damper as the outside enthalpy is closer than the inside enthalpy to the enthalpy set point In case number 5 the intake enthalpy is closer than the outside enthalpy to the enthalpy set point however in this case it is useful to open the damper as by mixing the two enthalpies inside and outside the inside enthalpy approaches the enthalpy set point In case number 6 the outside enthalpy is closer than the intake enthalpy to the enthalpy set point and therefore it is useful to open the damper as by mixing the intake and outside air the inside enthalpy approaches the enthalpy set point For all the graphs 1 2 3 4 5 6 each threshold is added to an offset shown on screen Pm in the user branch code 030220261 rel 3 5 of 20 05 08 91 Standard air handling unit This parameter has the function of preventing the continuous ON Off of the freecooling function near the thresholds This is shown in the graph below A ON Threshold ENR or ENE OFFS Safety offset OIF x Ambient enthalpy ene En kJ kg a pi OFFS If the cases shown above in the graphs 3 4 5 6 arise the opening of the damper depends on the intake enthalpy as described in the figure below SETP Enthalpy set point DIFF Enthalpy differential Ambient enthalpy 100 0 En kJ kg DIFF SETP Interaction between freecooling freeheating by enthalpy and other funct
3. R W Eb Minimum value read by the probe C Maximum R W Eb Maximum value read by the probe C Position intake humidity probe R W Ec Select the position of the intake humidity probe 1 to 10 Supply humid R W Ec Select the position of the outlet humidity probe 1 to 10 Extern humid R W Ec Select the position of the outside humidity probe 1 to 10 Type of intake humid probe R W Ed Type of signal used by the probe Oto 1V Oto 10V 0 to 20mA 4 to 20 mA Supply humid R W Ed Type of signal used by the outside humidity probe Oto 1 V Oto 10V 0 to 20mA 4 to 20 mA Extern humid R W Ed Type of signal used by the outside humidity probe Oto 1V Oto 10V 0 to 20mA 4 to 20 mA Min level intake humidity probe R W Ee Minimum value read by the probe 0 to 1000 10 Maximum R W Ee Maximum value read by the probe 0 to 1000 90 Min level outlet humidity probe R W Ef Minimum value read by the probe 0 to 1000 10 Maximum R W Ef Maximum value read by the probe 0 to 1000 90 Min level outside humidity probe R W Eg Minimum value read by the probe 0 to 1000 10 Maximum R W Eg Maximum value read by the probe 0 to 1000 90 Position VOC air quality probe R W Eh Type of signal used by the VOC air quality probe 1 to 10 CO2 R W Eh Select the position of the CO2 air quality probe 1 to 10 Type VOC air quality probe R W Ei Typeof signal used by the probe 0to1V 0to 10V 0 to 20mA 4to 20 mA CO2 air quality R W Ei Type of signal used by th
4. Temp probe position Intake R W E4 Select the position of the intake temperature probe 1 to 10 Temp Outlet R W E4 Select the position of the outlet probe 1 to 10 Probe type Room temp R W E5 Type of signal used by the intake probe PT1000 NTC 0 to 20mA 4 to 20 MA 0to1V Oto 10V Supply temp R W E5 Type of signal used by the outlet probe PT1000 NTC 0 to 20mA 4 to 20 MA Oto 1V Oto 10V Min level intake temp probe R W E6 Minimum value read by the probe SE Maximum R W E6 Maximum value read by the probe ES Min level outlet temp probe R W E7 Minimum value read by the probe SC Maximum R W E7 Maximum value read by the probe iS Position of outside temp probe R W Eg Select the position of the outside temperature probe 1 to 10 Ejection temp R W Eg Select the position of the discharge temperature probe 1 to 10 Type of outside temp probe R W E9 Type of signal used by the probe PT1000 NTC Oto 20mA 4 to 20 mA Oto 1V Oto 10V Eject temp R W E9 Type of signal used by the probe PT1000 NTC 0 to 20mA 4 to 20 mA 0to1V Oto 10V code 030220261 rel 3 5 of 20 05 08 25 Standard air handling unit C Min level outside temp probe R W Ea Minimum value read by the probe Maximum R W Ea Maximum value read by the probe C Min level expulsion temp probe
5. 95 R Outside temperature probe reading 48 R Intake fan speed request 96 R Antifreeze temperature probe reading M R Outlet VED speed Hz COR Intake temperature probe reading 45 OR Outlet VFD current ooo 88 R Outlet temperature probe reading 46 R_ Outlet VFD torque mm SR Outside humidity probe reading 47 R Outlet VFD power AO R Intake humidityprobereading 48 R_ Outlet VFD voltage OR code 030220261 rel 3 5 of 20 05 08 71 Standard air handling unit Intake VFD speed Hz 102 R Voltage at 0 Hz frequency outlet VFD 118 R W Intake VFD current OB R RAN Intake VFD torque o AS RA Intake fan speed in the interval between outlet temperature set 120 Intake VFD power _ 106 R point dead zone Intake VED voltage 106 RO R point dead zone Intake VFD current limit Outlet fan speed for outlet temperature greater less than set RAN point dead zone differentia Rated frequency of the motor connected to the outlet VFD Maximum intake VFD frequency code 030220261 rel 3 5 of 20 05 08 72 Standard air handling unit 12 4 2 Digital variables Digital input eR Enable heating with three point valve 64 R Digitalinput2_ ooo y RO Digitalinput3 JAR Enable intake airflow 66 Digitalinput4 ooo JAR Digital input 5 Enable change operation heating cooling from the supervisor 68 _Digital input 6 o ooo YB RO Enable control on compressors 69 Digitalinput7 ooo RO _U
6. CPU watchdog fault outletVFD Nes AI AL69 External fault outlet VD Nes AI Ln cl i O A AAA A Rn a EA VE AL84 Voltage surge intake VFD Nes A menma code 030220261 rel 3 5 of 20 05 08 69 Standard air handling unit 11 2 1 Alarms with manual reset The alarms managed by the program protect the devices connected and emit signals if the control parameters deviate from the normal values or the board malfunctions The alarms may derive from the alarm digital inputs from the probes and from the board The effect of the alarms ranges from signal only to stopping one or more devices or shutting down the unit OFF Many alarms have settable delays When an alarm arises the following signals are generated e the buzzer on the external terminal sounds absent on the Built In terminal and on the PGD external terminal e the red LED underneath the ALARM button comes on e the main screen displays the unit status AHU ALARM Pressing the Alarm button mutes the buzzer and displays the alarm screen If there is more than one active alarm once having accessed the alarm menu simply use the arrow buttons to scroll all the alarms Pressing any other button exits the alarm screens however but these remain saved and are displayed again whenever the Alarm button Is pressed To manually reset the alarms and delete the messages simply open the alarm screen and press the Alarm button again if the cause of the alarms are no longer prese
7. Delta timing Line star R W T5 Time that must elapse between the line and the star contactor 5 100 0 to 9999 500 Star R W T5 Duration of the star contactor 5 100 0 to 9999 200 Star delta R W T5 Time that must elapse between the star and the delta contactor 5 100 0 to 9999 100 Delay between act Heating coil R W T6 Time between the activation of the heating coil and the post heating coll min 0 to 9999 and post heating coil Delay airflow alarms R W T7 Set the flow switch alarm delay S Low pressure R W T7 Set the low pressure alarm delay S 0 to 600 60 Opening closing time 3 point valve R W T8 Set the times for the 3 point valve in cooling in cooling Heat R W T8 Setthe times for the 3 point valve in heating INITIALISATION gt Supervisor Communication speed R W VO Set the communication speed between the pCO board and the supervisor 1200 RS485 RS42 2 2400 RS485 RS422 4800 RS485 RS422 4 9600 RS485 ONLY 19200 RS485 ONLY Ident R W VO Setthe identification number for the pCO inside the supervisor network 1 to 200 Protocol type R W VI Select the type of communication protocol NONE CAREL REMOTE MODBUS lt MODEM gt number rings R W V2 Set the number of rings before answering Oto5 Selection type R W V2 Setthe type of dialling used by the modem TONE PULSE Password R W V2 Set the password to access the modem telephone number R W V3 Select the telephone number to call Dial R W V3 Manual dialling OFF ACT
8. S5 Set the set point for the activation of the heat recovery unit a double coll 0 to 999 2 Heating rotative recovery Setpoint R W S6 Set the set point for the activation of the rotary heat recovery unit expressed by C 0 to 999 40 the difference between the outlet temperature and the discharge temperature Diff R W S6 Setthe differential for the activation of the rotary heat recovery unit K 0 to 999 2 Reg pre heating Set point R W S7 Set the set point for managing preheating 999 to 999 20 Different R W S7 Set the differential for managing preheating K 999 to 999 2 Integr time R W S7 Set the integration time for managing preheating S 0 to 999 60 Control setpoint for VOC air quality R W Se Setthe set point for managing the outside damper with the VOC air quality 0 to 100 30 control probe code 030220261 rel 3 5 of 20 05 08 19 Different R W S8 Set the differential for managing the outside damper with the VOC air quality probe O to 100 Standard air handling unit 20 Neutral Z R W Se Setthe dead zone for managing the outside damper with the VOC air quality 0 to 100 0 probe Control setpoint for CO2 air quality R W S9 Setthe set point for managing the outside damper with the CO2 air quality ppm 0 to 2500 500 control probe Different R W S9 Setthe differential for managing the outside
9. Screen Pl includes the parameter for setting the duration of freecooling operation only After this time if cooling Is still requested the cooling coil is activated Graph of freecooling activation Troom C 10 6 2 Freeheating Freeheating if enabled is active when the following condition Is true Outside temperature Intake temperature gt Freeheating differential SETP DIFF Control differential Modulating damper output Screen PI includes the parameter for setting the duration of freeheating operation only After this time if heating is still requested the heating coll Is activated Graph of freeheating activation 100 0 Troom C SETP code 030220261 rel 3 5 of 20 05 08 SETP DIFF Control differential Modulating damper output 00 Standard air handling unit 10 6 3 Dew point The dampers are opened for dewpoint control when the following conditions are satisfied e Intake humidity intake humidity set point e The intake set point dew point outside dew point The intake set point dew point is calculated based on the following values e Intake humidity set point e Intake temperature set point The outside dew point is calculated based on the following values e Outside humidity e Outside temperature 10 6 4 Freecooling and freeheating control by enthalpy Freecooling and freeheating control by enthalpy require the following enthalpy values to be calculated e Outside enth
10. The latter can only be used for pCO boards with Built In terminal On screens H1 and H2 select the communication parameters The default values for the application allow communication without further settings or changes The communication parameters must have the following values 1 STOP bit On screen H3 enter the addresses of the VFD The values must be assigned using the physical addresses assigned to the devices before being connected to the RS485 using their own parameter code 030220261 rel 3 5 of 20 05 08 63 Standard air handling unit Parameters to be set on the VFD These are summarised in the following table P610 3 Slaveaddress J1 i Addressof the peripheral 0 1 stop bit 0 1 stop bit P2 2 21 Fieldbus reference 3 Fieldbus 3 Fieldbus When the actuator is started stopped via fieldbus the serial connection is the source of the frequency speed request During normal operation of the application the VFD actuators are started stopped via the digital output of the pCO During the device test procedure the devices are started stopped directly from the screen R8 R9 and consequently via Modbus For the VFD device test procedure to be successful this parameter must not be changed N B At the end of the configuration procedure turn both the devices pCO and VFD off and turn on again In general this procedure should be performed when modifying the communication parameters on either device Di
11. These screens are indicated by the symbol in the list of screens The first two screens in the maintenance menu AO Al do not require password access and contain information on the software and the controller board the following two again without password contain information on the operating hours of the following devices compressors 1 2 intake outlet fans These screens are indicated by the O symbol in the list of screens Password protected MANUFACTURER screens password 1234 modifiable these are accessed by pressing the MENU PROG buttons and are used to configure the unit and enable the main functions These are indicated by the 6 symbol in the list of screens Password protected VFD screens VARIABLE FREQUENCY DRIVER password 1234 modifiable these are accessed by pressing the MENU button and are used to configure the communication network between the pCO and the VFD and to configure the parameters of the VFD These are indicated by in the list of screens N B The screens that refer to functions that are not available are not displayed 8 1 List of screens Below is the list of screens shown on the display The columns in the table represent the loops of screens and the first screen AO BO is the one displayed when pressing the corresponding button from there the arrow buttons can be used to scroll to the other screens The codes Ax Bx C are displayed in the top right corner of the screens for easy i
12. air filter Outlet air filter Outlet air filter Outlet air filter Outlet air filter differential differential differential pressure differential differential differential differential pressure differential pressure pressure switch pressure switch switch pressure switch pressure switch pressure switch switch switch switch switch switch switch switch switch switch switch switch switch switch switch DI7 Antifreeze Antifreeze Antifreeze Heater cutout Humidifier alarm Humidifier alam Humidifier alarm Humidifier alarm thermostat thermostat thermostat Antifreeze Heater cutout thermostat Digital output configuration table models 9 to 16 Out Model 9 Model 10 Model 11 Model 12 Model 13 Model 14 Model 15 Model 16 ae es ee ee ee o DO3 Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked O TT eee ce TG eee Fier DT Teste DDT fees code 030220261 rel 3 5 of 20 05 08 15 Standard air handling unit Analogue output configuration table models 9 to 16 Model9 Model10 Modelti Modelt2 Model 13 Model 15 Model 16 YI Mod outside air Mod outside air Mod outside air Mod outside air Mod outside air Mod outside air Mod outside air Mod outside air dampers dampers dampers dampers dampers dampers dampers dampers Y2 Modulating valve in Modulating valve in Modulating valve in Modulating valve in Modulating valve in Modulating valve
13. alam 3 RR Outlet pressure alarm AR Intake pressure alarm MBR Evaporatoralarm_ jj MBR Inspection door open alarm R Fire smoke alarm MBR _Antifreeze alarm R rele i ig 20 Digital output3 A Digital output4 2 Digital output5 Digital output6 oo A Digital output 7 oS A Digital output8 22222 Digital output9 oo Digital output 1022222 Digital output TIO Digital output12 8 Digital output 13 8 Digital output14 8 Digital output 15 88 Digital output16 8 Digital output17 8 Digital output18 8 Pump protection alarm in heating 37 Low pressure alarm compressor2__ 38 Outlet fan protection alam 39 _ntakefanprotectionalam 40 Preheating probe alam M Outlet filter blocked alarm 42 Outlet humidity probe alarm 8 _General alam SSS unito Intake filter blocked alarm e Intake flow switch alarm 47 Enable cooling coil with three point valve 48 Electric heater protection alarm 49 Pump protection alarm in cooling 50 Built in terminal present ST Air quality probe alarm VOC 5 Air quality probe alarm C02 88 Outside air humidity alam O5 Intake air humidity alarm 5 Outlet flow switch alarm 6 Outside air temperature alarm 57 _Antfreeze alam 2222228 Intake air temperature alarm 59 Outlet temperature alarm 60 Discharge temperature alarm 6 Defrost temperature probe alam 62 code 030220261 rel 3 5 of 20 05 08 73 High pressure alarm compressort_
14. backwards Alarms R BO Active alarms on the outlet actuator NO ALARM ALARMS VFD supply fan R B1 Percentage request to the outlet actuator Request Feedback B1 Current frequency of the outlet actuator Hz Return Stat B2 General status of the intake actuator NOT RDY READY Run R B2 Operating status of the intake actuator STOP RUN Direction R B2 Running direction of the intake actuator gt forwards backwards Alarms R B2 Active alarms on the intake actuator NO ALARM ALARMS code 030220261 rel 3 5 of 20 05 08 VFD return fan R Request Feedback R Supply fan VFD R Motor speed Hz Motor speed rpm R Return fan VFD R Motor speed Hz Motor speed rpm R Supply fan VFD R Motor current Motor torque R Return fan VFD R Motor current Motor torque R Supply fan VFD R Motor power Motor voltage R Return fan VFD R Motor power Motor voltage R Supply fan VFD R DC voltage Diss temp R Return fan VFD R DC voltage Diss temp R User R W Enable write param Supply VFD R W Operating speeds In sup setp Out sup setp R W Return VFD R W Operating speeds In sup setp Out sup setp R W Supply VFD R W Rotation type Return VFD R W Rotation type Supply fan VFD R W Current limit Return fan VFD R W Current limit Supply fan VFD R W Motor nominal Voltage Return fan VFD R W Motor nominal Voltage Supply fan VFD R W Motor nominal frequency Return fan VFD R W Motor nominal fr
15. based on the outlet temperature case 5 This mode is used to control modulating fans with to 0 10V analogue signal or managed by VFD Operation is modulating when the unit starts the contacts close and the fan speed starts modulating based on the outlet temperature and depending on the maximum VFD only and minimum limits set Once the request is satisfied the fans are switched off 0 The devices are switched on and off considering the corresponding delay times set T3 Inputs used Position of the outlet temperature probe E4 Parameters used Control outlet temperature set point S2 Differential for outlet temperature control S2 Dead zone for outlet temperature control S2 Graph of activation OUT Status of the AHU On Off SAHU SAHU CV code 030220261 rel 3 5 of 20 05 08 60 Standard air handling unit Control graph OUT OUT Heating Cooling Heating Cooling l Al gt les C Ld Pe Ve C l DIFF i MZ NZ DIFF l l DIFF i MZ NZ DIFF l SET SET Modulating fan control with unit on off C4 and Modulating fan control with unit on off C4 and speed at set point gt speed off set point speed at set point lt speed off set point Outlet temperature in C DIFF Differential for fan outlet temperature control Dead zone for fan outlet temperature control 10 8 8 Fan control in continuous mode based on unit ON OFF and modulation based on the pressure case 6 This mode is used to control mod
16. changed using the control probe by selecting the probe to be used and comparing the values read by this probe against the control set point 50 The mode is changed from the supervisor using digital variable 68 see the database of supervisor variables For both types of control AUTOMATIC and FIXED POINT the software needs to know which probe is the control probe as this is essential for changing the operating mode With FIXED POINT control on screen CO the message change mode using replaces the message control probe displayed if AUTOMATIC control is selected 9 4 3 Managing the external thermostat Control with external thermostat requires this to be interfaced with the pCO board as follows Heating and cooling signals The heating cooling analogue outputs from the external thermostat can be connected to the 0 to 10V analogue inputs on the controller which will use these signals to activate the corresponding heating and cooling devices The configuration is performed in the manufacturer menu choosing the position of the inputs for the two signals from the thermostat in the ANALOGUE I section Heating cooling selection If the thermostat has a heating cooling digital output this can be connected to a digital input on the controller 3 fan speeds The digital outputs on the thermostat used to control the three fan speeds fan can be connected to the digital inputs on the controller which then directly manages the fans with the cor
17. control band equally based on the number of heaters enabled The activation set point and differential for each individual heater can be modified using the parameter on screen P1 The following graphs show the activation of the heaters code 030220261 rel 3 5 of 20 05 08 45 Standard air handling unit Graph of the activation of the coil with 1 2 3 heaters with default parameter values ON 1 HEATER OFF ON 2 HEATERS OFF I I Treg C ON 3 HEATERS OFF I I Treg C DIFF NZ SETP DIFF Control differential Control dead zone Status of heaters 1 2 3 The heaters can only be configured once that is they can be used either for the heating preheating coil or the post heating coil and not both 10 3 5 Post heating Parameters used Activation delay of the post heating coil T6 Three types of post heating coil are available e Coil with three point valve e Coil with modulating valve e Heater coll Description of operation Two types of management are envisaged for the post heating module 1 Heating support This function allows the post heating coil to be used as support to the preheating coil following the request from the control probe The graph of activation applies to any type of device used for the post heating coll Post heating is activated when the preheating coil is working at 100 that is when the temperature Is less than the set point differential The coil is activated after a set d
18. ducts of the air handling system The graph below should be interpreted considering the outlet temperature as the cooling request from the environment being controlled when the outlet temperature decreases the cooling request decreases in turn proportionally until reaching zero This request affects the operating status of the cooling device connected Graph of the activation of outlet temperature limit control 100 0 SETP Tsupply C DIFF a Cooling request value SETP Outlet temperature lower limit set point DIFF Tsupply code 030220261 rel 3 5 of 20 05 08 42 Standard air handling unit 10 2 Compressors Inputs used Position of the outlet temperature probe E4 Position of the intake temperature probe E4 Position of the intake humidity probe Ec Devices used Position of the digital output for compressor 1 2 J4 Parameters used Set point differential and dead zone for outlet temperature control S2 Set point differential and dead zone for intake temperature control S1 Set point and dead zone for intake humidity control S3 Enable control in dehumidification mode C8 Enable control of the compressors No Yes Ce Enable compressor rotation Ce Description of operation The management of the compressors allows two compressors to be controlled in independent circuits with the following essential features for these types of application e Compressor timers e Safety prot
19. fan cutout alarm depends on the status of the dedicated digital input or digital inputs 10 9 Communication between the pCO and the VFD devices Modbus RTU protocol over RS485 Parameters used Operating mode of the fans C4 Control mode of the fans C4 Type of fan C4 Serial port for communication in Modbus Master protocol HO Number of stop bits H1 Parity setting H1 Communication speed H2 VFD peripheral address settings H3 Description of operation As implemented in this application the Modbus Master protocol is used to manage up to 2 VFD devices To configure the pCO VFD network the parameters for the application must be set on the pCO as well as the parameters of the device VFD N B This function is not available for pCO boards without Built In terminal Parameters to be set on the pCO e Configuration and identification of the VFD From the main menu select the Manufacturer branch and then Configuration On screen C4 select the operating and fan control mode compatible with the configuration of VFD devices see the table in paragraph 5 8 2 Finally select the type Modulating VFD On screen Cq select the position of the VFD devices outlet intake or both e Communication From the main menu then select the VFD Management branch and then the item Communication On screen HO select the serial port serial port 2 Fieldbus or O pLAN can be selected
20. from the value read by the intake humidity orH probe Value read by the probe Suppl R W Ac Value to be added to or subtracted from the value read by the outlet humidity OorH probe Value read by the probe Exte R W Ac Value to be added to or subtracted from the value read by the outside humidity orH probe Value read by the probe Air quality probe Offset VOC R W Ad Value to be added to or subtracted from the value read by the VOC air quality probe Value read by the probe CO2 R W Ad Value to be added to or subtracted from the value read by the CO2air quality 0 probe Value read by the probe Compensat Probe R W Ae Value to be added to or subtracted from the value read by the set point go Offset compensation probe Value read by the probe Setp Temperature probe offset Antifr R W Af Value to be added to or subtracted from the value read by the antifreeze eG temperature probe Value read by the probe Pre H R W Af Value to be added to or subtracted from the value read by the preheating E temperature probe Value read by the probe Temperature probe offset R W Ag Value to be added to or subtracted from the value read by the defrost C code 030220261 rel 3 5 of 20 05 08 20 Standard air handling unit Defrost temperature probe Value read by the probe
21. if featured in the air handling unit If heating is managed by a mixed coil the circuit has just one pump that handles the flow of the liquid In the event of pump cutout alarms in heating the controller closes the contact and consequently deactivates the circulating pump 10 3 7 Mixed valve management Parameters used Position of the output for the modulating valve in heating L4 Outputs used Enable mixed heating cooling control Cl Enable control of the modulating valve in heating CI Enable the modulating valve in cooling Cj Description of operation The management of the mixed valve Is only possible if the two coils cooling coil and heating coll are fitted with modulating valves The choice of the type of valve for these two components of the air handling unit is set in screens Ci and Cj The status of the mixed valve is displayed on screen Ib 10 3 8 Outlet temperature upper limit Inputs used Position of the outlet probe E4 Parameters used Outlet temperature upper limit Pf Outlet limit differential Pf Enable outlet upper limit Pf Description of operation In heating operation control can be activated on the outlet temperature so as to avoid reaching too high temperatures due to excessive request from the intake probe The actions performed depend on the control request Hot water coil with modulating valve The heating limit decreases when the outlet temperature is between the differential and the set poin
22. in Modulating valve in Modulating valve in heating heating heating heating heating heating heating heating Y3 Modulating valve in Modulating valve inf Modulating valve n Humidifier Modulating valve in Modulating valve in Modulating valve in cooling cooling cooling cooling cooling cooling Y4 Valve in post Humidifier Valve in post heating Humidifier heating Analogue input configuration table models 17 to 24 in Moi wee mes Mem woa Model22 Wen Mr _ pressure pressure humidity humidity humidity humidity temperature temperature pressure temperature temperature temperature temperature pressure temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature MEAN temperature temperature temperature temperature temperature temperature temperature A Sem E temperature temperature temperature temperature el ee Sees LD temperature temperature Digital input configuration table models 17 to 24 es Model 17 Model 18 Model 19 Model 20 Model 21 Model 22 Model 23 Model 24 an Outlet fan cutout Outletfan cutout Outlet fan cutout Outletfan cutout Outletfan cutout Outletfan cutout Outlet fan cutout Outlet fan cutout Intake fan cutout Intake fan cutout Intake fan cutout Intake fan cutout Intake fan cutout Intake fan cutout Intake fan cutout Intake f
23. is enabled using both probes VOC CO2 the damper is controlled according to the greater of the two signals measured Graph of damper opening with VOC CO2 control SEI Outside air damper control set point Outside air damper control dead zone DIFF Outside air damper control differential VOC Value of VOC or CO2 present in the room Outside air damper modulating output SETP code 030220261 rel 3 5 of 20 05 08 52 Standard air handling unit 10 7 Humidifier Inputs used Position of the intake humidity probe Ec Position of the humidifier alarm digital input D3 Devices used Position of the modulating humidifier output L7 Position of the ON OFF humidifier output J6 Parameters used Enable humidification control NOT ENABLED DIGITAL OUTPUT ANALOGUE OUTPUT C7 Set point differential and working dead zone for intake humidity control S3 Description of operation The board has two outputs dedicated to humidifier control one modulating and one ON OFF The user can choose which output to enable by the parameter present on screen C7 Graph of the modulating humidifier output SETP Humidity control set point DIFF Humidity differential Humidity dead zone 100 Intake humidity Modulating humidifier output 0 ig Hroom rH DIFF NZ SETP Graph of the ON OFF humidifier output SETP Humidity control set point DIFF Humidity control differential Humidity dead zone Intake
24. of outlet fan and intake fan by Carel VFD inverter The main parameters of the VFD can be set directly on the display of the pCO as Modbus communication is featured between the pCO and the VFD 2 Additional fan control based on the outlet temperature Updates 1 Updated Belimo management for control of actuators with the new firmware currently made by Belimo In any case compatibility is ensured with the old versions 1 2 Introduction and functions performed by the program The application program using the pCO pCO2 pCO platform provides a complete and flexible solution for managing the most common configurations of air handling units One of the main characteristics of this application is the possibility to configure on the user terminal all the parameters corresponding to the position of the inputs outputs making the wiring of the unit extremely flexible and guaranteeing maximum adaptability to all installations The input output configuration procedure has been protected to prevent unwanted tampering so as to be defined by the manufacturer and not by the end user There are 24 pre configured models of systems described in chapter 3 4 1 Diagrams of the models which allow the rapid configuration of all the parameters and the positions of the inputs and outputs Once having chosen the model considered most suitable further modifications can be made manually to the configuration on the user terminal so as to guarantee compatibility bet
25. of the delta contactor for the intake fan Fixed value Return Star R W J3 Position of the star contactor for the intake fan Fixed value Digital outputs Compressor 1 R W J4 Select the position of compressor 1 1 to 18 Compressor 2 R W J4 Select the position of compressor 1 1 to 18 Digital outputs Heaters Elet 1 R W J5 Select the position of electric heater 1 1 to 18 Elect Heater 2 R W J5 Select the position of electric heater 2 1 to 18 Elect Heater 3 R W J5 Select the position of electric heater 3 1 to 18 Digital outputs humidifier R W J6 Select the position of the humidifier 1 to 18 By pass rec damp R W Je Select the position of the bypass heat recovery unit 1 to 18 Double rec coil R W J6 Select the position of the double coil heat recovery unit 1 to 18 Digital outputs general alarm R W J7 Select the position of the alarm signal device 1 to 18 Unit status R W J7 Select the position of the device signalling the status of the unit 1 to 18 Digital outputs blocked filter R W J8 Select the position of the device for blocked filter alarm signal 1 to 18 Cool pump R W J8 Select the position of the pump in cooling 1 to 18 Heat pump R W J8 Select the position of the pump in heating 1 to 18 Cold status R W J9 Select the position of the cooling status output 1 to 18 Defrost R W J9 Select the position of the device for signalling the antifreeze alarm 1 to 18 Digital damper R W J9 Select the position of the discharge damper 1 to 18 Direct exp
26. offset for the outlet fan V 0 to 10 Int t outlet control R W G1 Integration time for the outlet fan S 0 to 9999 Der T R W G1 Derivative time for the outlet fan S 0 to 9999 Intake fan inverter Setpoint R W G2 Management of the intake fan Pa 9999 to 9999 Control set point for the intake fan Diff R W G2 Control differential of the intake fan Pa 999 to 999 Offset R W G2 Control offset for the intake fan V 0 to 10 Control intake LT R W G3 Integration time for the intake fan S 0 to 9999 600 TD R W G3 Derivative time for the intake fan S 0 to 9999 600 Temp Control R W G4 0 1 R integration time R W G4 S 0 to 9999 M R W G4 S 0 to 9999 TIMES gt Min on time Compressors R W TO Minimum time the compressors must remain on for when started S 0 to 9999 600 Min off time compressors R W TO Minimum time the compressors must remain off for when stopped S 0 to 9999 600 Min time between Different R W TI Minimum time that must elapse between the starts of two different compressors S 0 to 9999 600 Compressors Min time between same R W T2 Minimum time that must elapse between two starts of the same compressor S 0 to 9999 600 compressor starts Star Delta timing Start delay R W T3 Delay between unit on and fan on S 0 to 9999 60 On delays R W T3 Delay between compressors starts S 0 to 9999 10 Off delays R W T3 Delay between unit off and fan off S 0 to 9999 10 Time between Two steps Fans R W T4 Delay between the first and the second fan step S Star
27. outlet temperature control G4 Description of operation The software manages the typical control functions of the air handling unit The main control function acts on the intake or outlet air temperature so as to ensure comfort at all times by cooling or heating the air Graph of temperature control OUT SETP Temperature control set point DIFF Temperature control differential 100 HEATING COOLING Temperature control request 0 T reg C DIFF NZ NZ DIFF SETP Screen CO Is used to select the temperature control probe e Outlet temperature probe e Intake temperature probe e Control by external thermostat In the event of control with outlet probe or intake probe refer to the graph shown above Graph of temperature control If the unit is off the temperature control requests are ignored and all control functions are deactivated The software can manage the following types of control e P Proportional e P Proportional integral code 030220261 rel 3 5 of 20 05 08 of Standard air handling unit Parameters required for control on the intake temperature e Intake temperature set point e Intake temperature differential e Intake temperature dead zone e Intake temperature control integration time Parameters required for control on the outlet temperature e Outlet temperature set point e Outlet temperature differential e Outlet temperature dead zone e Outlet temperature control integration time 9 4 1 Chang
28. the operation of the intake fan Oto 100 Analogue outputs Rotative heating R W R5 Value set for the operation of the rotary heat recovery unit 0 to 100 Recovery Analogue outputs R W R6 Value set for the operation of the humidifier Oto 100 Digital outputs C closed A open R W R7 Status of the settable digital outputs CIO Password VFD RAW WO Enter VFD password 0 to 9999 1234 PGD with 6 buttons or Built in terminal ESC and Communication button in the VFD menu 1234 NO 1 STOP BIT 19200 1000 2 Password RAW WO Enter manufacturer password 0 to 9999 VFD management Modbus protocol communication R W HO Select the serial port for communication in Modbus protocol NO on pLAN serial 0 Fieldbus serial 1 Modbus config R W H1 Stop bits 1 STOP BIT Stop bit 2 STOP BITS Parity mode R W H1 Parity NO EVEN ODD Modbus config R W H2 Communication speed between the pCO board and the VFD via RS485 Kb s 1200 BaudRate 2400 4800 9600 19200 Modbus config R W H2 Waiting time for the first response byte from the peripheral ms 0 to 9999 Timeout Modbus config R W H3 Modbus address of the outlet VFD 1 to 255 Supply VFD addr Return VFD addr R W H3 Modbus address of the intake VFD 1 to 255 Supply Stat R BO General status of the outlet actuator NOT RDY READY Run R BO Operating status of the outlet actuator STOP RUN Direction R BO Running direction of the outlet actuator gt forwards
29. these are required The time and date can be set on screen KO Four different types of time bands can be selected e Type A Used to set two bands per day with two different set points Between the bands the unit is off ON OFF I I I I I I a Il p gt BAND 1 i BAND 2 i e Type B Used to set one band per day with corresponding set point ON OFF fo BAND e Type C Used to set the unit in continuous operation effectively meaning there are no time bands e Type D Used to set the unit as being always off The following set points can be set for each band e Temperature control set point e Fan speed control set point If time band management is enabled each day of the week must be associated with the type of band required The graphs show that the unit is only on for the times included in the interval with control based on the relative set point and then switches off in the times that are not within the interval 10 12 Test devices Devices used Enable test devices RO Open the heating valve R1 Open the cooling valve R1 Open the post heating valve R2 Open the outside air Damper R3 Open the mixing air damper R3 Activate the outlet fan analogue output R4 Activate the intake fan analogue output R4 Start the rotary heat recovery unit R5 Start the analogue humidifier R6 Status of the digital outputs R7 Request outlet VFD speed via Fieldbus R8 Start Stop outlet VFD via Fieldbus R8 Reques
30. to the control of the fan coil speed have the status shown in the table according to the current speed DOTI D02 DO3 Famspeed Fan OFF N B This Is valid for all types of fan coil speed control automatic by thermostat and manual code 030220261 rel 3 5 of 20 05 08 62 Standard air handling unit 10 8 10 Alarms Inputs used Position of the outlet flow switch DO Position of the intake flow switch DO Position of the outlet cutout DO Position of the intake cutout D1 Serial board for communication in Modbus protocol Parameters used Minimum outlet pressure set point for alarm Pb Minimum intake pressure set point for alarm Pb Enable the flow switch contact none outlet intake both C6 Air flow alarm delay time 17 Response timeout for communication in Modbus H2 Description of operation The following alarms are used in the management of the fans e Quitlet intake air flow switch e Outlet intake fan cutout The flow switch alarm is generated by e digital input e pressure transducer with alarm threshold settable The first possible causes of the outlet intake air flow switch alarm depends simply on the status of the dedicated digital input When using the pressure transducer the controller compares the reading against a set point If the pressure read Is less than the set point for a set time alarm delay time the outlet intake air flow switch alarm is activated The outlet intake
31. upper limit C 0 to 999 50 Diff R W Pf Outlet differential to be used with the upper limit K 0 to 999 2 High supply humidity limit R W Pg Enable upper limit based on the outlet humidity Supply set R W Pg Outlet set point to be used as the upper limit 0 to 999 50 Diff R W Pg Outlet differential to be used with the upper limit 0 to 999 15 Compensation set R W Ph Select the probe used for the compensation of the set point Probe comp OutT Roomt Co mp sensor Probe type R W Ph Type of signal used by the compensation probe Active NTC Active Set point R W Ph Select the set point to be compensated Ke RoomSet OutletSet COMPENSATION SET Set min R W Pi Set the start compensation value Comp band R W Pi Set the compensation differential C Comp diff R W Pi Maximum value that the set point can reach in compensation K Type free Cooling heating R W Pj Set the type of freecooling and freeheating Not enabled Temperature Hum idity Enthalpy Delta freecooling freeheating R W Pk Set the freecooling and freeheating differential E Freecool heating working time R W P Set the duration of freecooling freeheating operation only min Free cool heating enthalpy Delta R W Pm Set the delta for freecooling heating by enthalpy kcal kg offs R W Pm Set the differential for freecooling heating by enthalpy kcal kg Atmospheric Pressure R W Pn Enter the atmospheric pressure value Pa 600 to 1100 1000 Enable restart After black o
32. 4 Select the position of the external ON OFF contact 1 to 18 HP Compressor 1 R W D4 Select the position of the high pressure switch for compressor 1 1 to 18 code 030220261 rel 3 5 of 20 05 08 24 Standard air handling unit CER a se HP Compressor 2 R W D4 Select the position of the high pressure switch for compressor 2 1 to 18 Antifreeze digital inputs R W D5 Select the position of the antifreeze thermostat 1 to 18 Supply filter R W D5 Select the position of the outlet filter 1 to 18 Return filter R W D5 Select the position of the intake filter 1 to 18 Fire smoke digital inputs R W D6 Select the position of the fire smoke sensor 1 to 18 Filter HeatR R W D6 Select the position of the pressure switch for the heat recovery unit dirty alarm 1 to 18 Door switch R W D6 Select the position of the door open switch 1 to 18 Digital inputs cold outside temp R W D7 Select the position of the cold outside temp protection 1 to 18 Cold by ID R W D7 Select the position of the heating cooling input 1 to 18 Generic filter R W D7 Select the position of the generic filter input 1 to 18 D Ext Therm Fan Input 1 R W D8 Select the position of the first input for the control of the 3 fans by an external 1 to 18 thermostat Input 2 R W D8 Select the position of the second input for the control of the 3 fans by an external 1 to 18 the
33. 40 Standard air handling unit 10 1 2 Cooling coil with three point valve Devices used Three point cooling valve opening position Jb Three point cooling valve closing position Jb Parameters used Valve opening time in cooling T8 Description of operation When a request Is active either opening or closing the corresponding contact remains energised for a time proportional to the request A valve opening time is envisaged expressed In seconds If the request in progress is between 10 and 90 the opening or contact closing will remain energised for the value of the request as a percentage of the total set energising time If the request is between 90 and 100 or between 0 and 10 the opening and closing time Is no longer proportional to the request The controller completely opens and closes the valve and then activates the closing or opening contact respectively for the time required to move to the desired position Example The example describes the case where the opening request Is equal to 50 with a total opening time set to 180 seconds The opening contact remains energised for 90 seconds 50 of 180 seconds The preheating coll is forced to the maximum opening for a time that can be set if the winter starter function Is enabled 10 1 3 Direct expansion coil Devices used Position of the relay step 1 2 3 Ja Parameters used Select the number of direct expansion steps P4 Enable modification of direct expansi
34. 70 Standard air handling unit 12 3 Supervision pCO pCO and pCO can be connected with a local or remote supervisor PC running PlantVisor with a GSM or traditional modem and with the most commonly used BMS Modbus To use the various functions listed special optional cards RS485 RS232 or Gateways instruments that interpret different communication protocols are required 12 3 1 CAREL supervisor The local connection between the pCO board and a supervisor PC PlantVisor or other requires an additional RS485 board pCO2 PCO2004850 pCO3 pCO PCO1004850 to be fitted in the Serial board slot For connection to the PC connect the additional card to the RS485 RS232 converter via a 3 wire RS485 line The RS485 RS232 converter is supplied by CAREL PC485KITOO If the supervisor is remote with the supervisor PC connected via telephone line simply fit the optional RS232 board pC0 PCO200MDMO pCO3 pCO PCO100MDMO and connect it to a traditional modem not a GSM modem In this version of the software the baud rate is set at 19200 bps 12 4 Database of supervisor variables 12 4 1 Analogue variables Modulating valve opening in cooling 49 R DESCRIPTION Reading of analogue input no 1 ER Modulating humidifier opening 50 R Outlet inverter opening value oR Reading of analogue inputno2 2 OR Intake inverter opening vale R Reading of analogue inputno ES LR iain outside damper opening Reading of analogue input no 4
35. High ont humidity init dente TT Rea rendent ros SR Outlet temperature set point low limit 55 R Readingofanalogueinputno6 OR Outlet temperature set point high limit_ R Reading of analogue inputno7 CT 7 RR Outlet humidity set point high limit 57 R Reading of analogue inputno8 OR Reading of analogue inputno9 RR Reading of analogue inputno10_ CR Outlet temperature control dead zone 60 RAW Set point compensation temperature probe 61 R Modulating bypass damper control 62 R Modulating postheating col valve cont 63 fR reheating request db ___ Hi Physical analogue output t SR Cooling request PG R Physical analogue output RA Modulating valve opening 87 RR Physical analogue output3 BOR Discharge temperature R Physical analogue output4 CR Differential for the first cooling step 69 RW Physical analogue outputS 0 OR Physical analogue output6 OR Differential for heater 3 80 RW Current intake humidity setpoint 81 R Dual outlet temperature set point 86 RW Maximum dehumidification limit 89 RW Modulatingsetpoint ONR VOC air quality probereading 8 OR Minimum outletfanspeed A R Preheating probereading 39 R_ Maximum outletfanspeed CSC R Effective intake control setpoint 40 OR Minimum intake fan speed 93 R Outlet humidity probe reading AT TOR Maximum intake fan speed CSC TOR Defrost temperature probe reading A R_ Outlet fan speed request
36. IVE code 030220261 rel 3 5 of 20 05 08 28 Standard air handling unit VFD management VFD menu COMMUNICATION 15 button terminal MENU button New Passwords Manufacturer R W V4 Set the new password to access the manufacturer menu User R W V4 Set the new password to access the user menu Assistance R W V4 Set the new password to access the maintenance menu Reset lists I O R W V5 Delete the values assigned to the input output configuration parameters Setting network frequency R W V5 Set the mains frequency Hz 50Hz 60Hz Memory erasing R W Ve Delete the configuration values Set model type R W Ve Select the model of unit being controlled 1 to 24 TEST DEVICES Activate device tests R W RO Enable test procedure on the devices enabled Oto 1 Analogue output vale in heating R W R1 Value set for the opening of the valve in heating 0 to 100 Cooling R W RI Value set for the opening of the valve in cooling 0 to 100 Analogue outputs Post Heating R W R2 Value set for the opening of the valve in post heating Oto 100 valve Damper outputs external air R W R3 Value set for the opening of the outside air damper 0 to 100 mixing R W R3 Value set for the opening of the mixing air damper 0 to 100 Analogue outputs Supply fan R W R4 Value set for the operation of the outlet fan Oto 100 Intake R W R4 Value set for
37. Standard Air Handling Units CAREL r ney E 7 ns dn i 7 e ATS Ha i LOTA Emija Lino RINO field card cand a n c ae me la afl ean ka ara E Afal gi met tl A spina da ET User manual Manual version 3 5 of 20 05 08 Program code FLSTDMAHUA LEGGI E CONSERVA ALE ISTRUZIONI lt READ AND SAVE THESE INSTRUCTIONS LEGGI E CONSERVA QUESTE ISTRUZIONI 4 READ AND SAVE THESE INSTRUCTIONS We wish to save you time and money We can assure you that the thorough reading of this manual will guarantee correct installation and safe use of the product described IMPORTANT WARNINGS BEFORE INSTALLING OR HANDLING THE APPLIANCE PLEASE CAREFULLY READ AND FOLLOW THE INSTRUCTIONS DESCRIBED IN THIS MANUAL The appliance that this software is dedicated to has been developed to operate risk free and for a specific purpose as long as the software is installed programmed run and maintained according to the instructions in this manual and by qualified personnel all the conditions prescribed in the installation and user manual of the appliance in question are respected All other uses and modifications made to the device that are not authorised by the manufacturer are considered incorrect Liability for injury or damage caused by the incorrect use of the device lies exclusively with the user Contents 1 On es 10 12 13 DOO y reoo cr ili
38. TROL PROBE HEATING COIL Preheating temperature COOLING COIL POST HEATING COIL Preheating temperature After having selected the probes set the corresponding control parameters Set point Differential and Dead zone in the screens under the set point menu 9 3 Automatic control This type of control involves the automatic operation of the software in the cases listed below to control the heating preheating cooling and post heating coils and ensuring optimised management of the air handling unit and greater comfort in the rooms controlled The software acts automatically on the following devices 1 _ Heating coll 2 Dehumidification and cooling coll 3 Post heating coll HEATING COIL this is managed only is the humidifier is enabled and in this case it can also work as a preheating coll Humidity request Heating coil Enabled Controlled by the set control probe Enabled Controlled by the preheating probe according to the corresponding set point and differential code 030220261 rel 3 5 of 20 05 08 36 Standard air handling unit DEHUMIDIFICATION AND POST HEATING for these two functions priority must be given either to temperature or humidity Based on this fundamental selection the software will manage the heating and cooling coils as a consequence Post heating on the other hand can be applied to compensate for the lowering of the temperature due to the dehumidification function or alternatively to suppl
39. W Intake pressure probe reading OR Optimisation of V f curve outlet VFD_ 98 R W Automatic restart outlet VFD 99 RW VOC air quality control dead zone gt a Enable compressors Speed reference intake VFD 103 RAV Pronn neum ticas Dew Outlet VFD speed rpm OR Outlet VFD DC voltage 8 OR Heat sink temperature outlet VFD B1 R Active alarm code outlet VD 82 R Status word outlet PO SBR Intake VFD speed rpm RR Intake VFD DC voltage 85 R Heat sink temperature intake VD 86 R_ Active alarm code intake VFD 87 R Status word intake VFD 88 R_ Type of control outlet VFD _ 89 AW Speed reference outlet VFD 90 RW code 030220261 rel 3 5 of 20 05 08 75 Standard air handling unit 13 Glossary e Actuator VFD device e Differential this defines a temperature zone around the set point within which the system manages the control devices e Built in display housed on the backbone of the pCO board e Buzzer audible buzzer fitted on the external terminals this emits an extended sound in the event of alarms or a brief sound if the limits for setting the parameters are exceeded The built in terminals do not have a buzzer e Default this term defines the values for example the set point and proportional temperature band that are automatically used by the system if no modifications are made by the user e Freecooling action whereby outside air is introduced into the envir
40. W Co Select the device used to manage post heating Three point valve Modulating valve Heaters Heaters Number R W Co Setthe number of electric heaters used on the unit Oto 3 3 Number Belimo devices R W Cp Set the number of Belimo devices connected to the pCOXS 1 to 8 Device On line R Cp Display the Belimo devices on line DIGITAL INPUTS gt Digital inputs DO Airflow V M R W DO Select the position of the outlet fan flow switch 1 to 18 Return flow sw R W DO Select the position of the intake fan flow switch 1 to 18 Outlet fan cutout R W DO Select the position of the outlet fan cutout 1 to 18 Intake fan cutout R W D1 Select the position of the intake fan cutout 1 to 18 Heaters cutout R W D1 Select the position of the electric heater cutout 1 to 18 Pump cutout in heating R W D1 Select the position of the pump cutout in heating 1 to 18 Pump cutout in cooling R W D2 Select the position of the pump cutout in cooling 1 to 18 Therm compr 1 R W D2 Select the position of the compressor 1 cutout 1 to 18 Therm compr 2 R W D2 Select the position of the compressor 2 cutout 1 to 18 All Humidifier R W D3 Select the position of the dig input for the humidifier alarm 1 to 18 LP Compressor 1 R W D3 Select the position of the low pressure switch for compressor 1 1 to 18 LP Compressor 2 R W D3 Select the position of the low pressure switch for compressor 2 1 to 18 Digital inputs External ON OFF R W D
41. When an alarm is activated the following data is saved e chronological number of the event 0 150 e time e date e alarm description e outlet air temperature e intake air temperature If the cursor is moved to the chronological number the alarm log can be scrolled using the arrow buttons from 1 to the maximum number saved In position 001 pressing the down arrow has no effect likewise if 15 alarms have been saved in position 015 pressing the up arrow has no effect 12 2 Advanced log The events are saved to the 1MB or 2MB memory expansion permanently connected to the board The advantages and characteristics are listed below e Log by event a typical log by event is the alarm log If an alarm is activated the alarm can be saved together with other significant values temperature pressure set point etc e Log by time a typical log by time is the log of temperature pressure values The temperature and pressure values are saved at regular intervals e Log of the logs this saves the last alarms temperature pressure values recorded before a serious alarm Unlike the data saved by the event and time logs these data are not overwritten when the memory is full e _ Possibility to choose the values to be saved and the saving method at any time The WinLOAD program can be used to define the values to be saved and the saving method WinLOAD does not need the application software files as it can directly request the information r
42. Y N Compressor R W Ce Enable the compressors Y N Rotation R W Ce Enable rotation of the compressors Y N Cutouts 1 R W Ce Enable compressor 1 cutout Y N Cutouts 2 R W Ce Enable compressor 2 cutout Y N Safety compressors HP 1 2 R W Cf Enable the high pressure switch alarm for compressors 1 2 Y N LP 1 2 R W Cf Enable the low pressure switch alarm for compressors 1 2 Y N Heating coil Module R W Cg Enable and configure the heating coil Not enabled Heating Preheat Heating Regulation probe R W Ch Select the device used to control the heating coll Intake Outlet Saturation Reg device Heating R W Ci Select the device used to control heating 3 point valves Modulating valve Heaters Heaters Number R W Ci Set the number of electric heaters used on the unit Oto 3 3 Cooling regulation R W Cj Select the device used to control the cooling coll Modulating valve Three point valve Direct expansion Not enabled Number steps R W Cj Number of stages enabled for management of the direct expansion coll 1 to 3 Cooling Regulation Probe R W Ck Select the probe used to control cooling Intake Outlet Cool Heat Battery R W CI Enable the mixed heating cooling valve Y N Enable Post Heat R W Cm _ Enable and select of the type of post heating Not enabled Compensation in Dehumidify Compensation Integration Postheating Regulation Probe R W Cn Select the post heating control probe Intake Outlet Saturation Reg device Post heating R
43. ___ 120 R _ High pressure alarm compressor __ 121 OR Heat recovery unitdirtyalarm 22 R Set point compensation probe alarm 123 R Low pressure alarm compressor 124 R Status of bypass damper digital output on the heat recovery unit 125 B 2 2 2 2 2 2 2 2 2 2 3 3 3 3 2 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 D D D D D 19 0 1 2 3 4 D 6 7 8 9 0 1 2 3 4 D 6 7 8 9 0 1 2 3 4 D 6 7 8 9 0 1 52 D3 4 dd 56 7 8 59 61 62 Standard air handling unit Digital damper opening 126 R Enable modulating setpoint 155 R Enable antifreeze probe 127 R Enable defrost temperature probe 128 R Enable outside temperature pobe 129 R Enable outside humidity probe ss 130 R Enable VOC air probe IR Enable intake pressure probe 82 R Enable intake humidity probe 133 R Enable intake temperature probe 134 R Enable outlet pressure probe BB R Enable outlet humidity probe 136 R Enable outlet probe 137 R Humidifier active 138 R Minor alarms active outlet VFD 167 R First intake fan step BG RA First cooling coil step with direct expansion 140 R First heating coil step with electric heaters 1 R _Firstoutletfanstep AZ OR Enable CO2 air prob AS OR Second cooling coil step with direct expansion 144 R Third cooling coil step with direct expansion 145 R Second heating coil step with electric heater
44. actuators connected before setting the addresses the number of devices present in the MP BUS network must be declared Cp Set the address of the devices all the devices in the MP BUS network must be powered and the unit must be off Pressing the two arrow buttons UP DOWN together for 2 seconds accesses the first Belimo configuration screen This menu has 8 screens F1 to F8 for setting the address of each Belimo actuator In each the first row shows the address of the device The address will be assigned to the actuator when the special button for setting the address Is pressed Example The objective is assign address 3 to an actuator Proceed as follows press UP DOWN for 2 seconds this accesses screen F1 dedicated to actuator 1 Scroll the screens to F3 dedicated to actuator 3 Press Enter to go to the last row with the text CONFIGURE gt and press Enter Following the instructions press Enter again Following the instructions press the button on the actuator that address 3 Is to be assigned to NOTE No two actuators can have the same address in the network at the same time otherwise there will be no communication between the pCO and the actuators Therefore if the addresses on the actuators being configured are ignored one actuator needs to be connected at a time to set the address Optional sensor connected to the device An optional sensor can be connected to each Belimo actuator e NIC o Oto 1 Volt e Oto 10 Vo
45. agrams of connections between the pCO and the VFD ATTENTION The jumper used for the termination resistor on the VFD must be leave on the position TERMINATION RESISTOR RS485 IS NOT USED pLAN serial 0 pCO2 pCO3 pCOxs Rx Tx Rx Xx Gnd A 5 ale RS485 RS 48 00 RS485 nS 48 EN 9 10111819 A B30 2 VET E De a ae MM HS OO0000000 OO0000000 STAGE VFD 1 VFD 2 rire Hihi Fieldbus serial 2 only pCO3 FR ARRE EL nm VED ma 300 PSS 9 10111819 A B30 9 10111819 A B30 ae 7 td 00000000 00000000 en zone ge Lom ce pe og mio Fieldbus serial 2 T OD O 5 g am code 030220261 rel 3 5 of 20 05 08 64 Standard air handling unit Alarm management There are three types of alarms associated with the VFD devices Offline this occurs when serial communication fails between the pCO and the VFD After three failed queries from the pCO to one of the VFD devices the buzzer Is activated on the standard external LCD terminal and the alarm screen is displayed The alarm is featured for all the VFD devices in the network The possible causes of the VFD Offline alarm are as follows Physical connection of the serial communication board on the pCO to the RS485 terminals on the actuator _ Setting of the Modbus protocol communication parameters baud rate stop bits and parity see section 5 8 11 Setting of the device addresses the addresses assigned to the actuators on scree
46. ake BIOS 3 84 Is required 4 Selecting the language The software interface is available in the following languages English Italian French and German To modify the language of the user interface proceed as follows Press the button service on the terminal 2 Screen AO will be displayed Press the ENTER button to move the cursor to the parameter for selecting the language 3 Select the language required with the Up or Down buttons Press the ENTER button to confirm Screen V5 features a parameter for enabling the select language screen when starting the unit so that when the board is powered up the desired language can be selected by pressing the ENTER button PE 5 Installing the default values The default values are assigned by CAREL to the main operating parameters of the application program that is the times set points differentials etc After having installed the default values the parameters can be modified within the allowed range of values The default values can be installed manually by the user at any time on the external or built in terminal Operations to be performed to manually install the default values for the parameters 1 Press the MENU PROG ESC or MENU buttons and enter the Manufacturer password 1234 then press ENTER 2 Choose the INITIALISATION item and press Enter 3 Display the default value installation screen V6 and enter the model of the unit to be initialised then confir
47. ake humidity X x X Outlet humidity IO SO FE O E E E a SOS ah IO O O E O E E VOCairquality E SOS E O EE E SOE _CO2 air gal A IS EE TE E Compensation sepa S x G e Post heating Model 2 Model 4 Model 5 Model 6 A Model 7 Model 8 code 030220261 rel 3 5 of 20 05 08 12 Standard air handling unit Model 23 Model 24 code 030220261 rel 3 5 of 20 05 08 13 Standard air handling unit SSS input configuration table models 1 to 8 Mod
48. alarm alarm B po Heater cutout er output 7 table models 1 to 8 Model2 Model 3 Model 5 Model 6 Model8 LC CoC ce DO3 ON OFF outside ON OFF outside ON OFF outside ON OFF outside ON OFF outside ON OFF outside ON OFF outside air ON OFF outside air alr a_i alr aie alr MA air damper air damper alr damper damper damper DO4 LE ee 1 def T_T fee ST fee DOV Heater ET et output configuration table models 1 to 8 EEE EEE nes Modulating Modulating valve Modulating Modulating Modulating Modulating valve in a valve in _ E in heating valve in heating in heating valve in heating valve in heating valve in heating heating a Modulating Modulating valve Modulating Modulating Modulating valve in Modulating valve in valve in cooling in cooling valve in cooling valve in cooling cooling cooling Y4 Modulating valve Modulating valve in in post heating post heating code 030220261 rel 3 5 of 20 05 08 14 Standard air handling unit Analogue input configuration table models 9 to 16 Model 9 Model 10 Model 12 Model 13 Model 15 Model 16 Intake air Intake air Intake humidity Intake humidity Intake humidity Intake humidity Intake humidity Intake humidity temperature temperature B2 Outlet air Outlet air Outlet air pressure Outlet air Intake air Intake air Intake air temperature Intake air temperature temperature temperature pressure temperature temperature B3 Antifreeze Antif
49. alpy e Intake enthalpy e Enthalpy of the set point The outside enthalpy is calculated based on the following values e Outside temperature e Outside humidity e Atmospheric pressure The intake enthalpy is calculated based on the following values e Intake temperature e Intake humidity e Atmospheric pressure The enthalpy set point is calculated based on the following values e Active temperature set point e Intake humidity set point e Atmospheric pressure Freecooling and freeheating control by enthalpy is OFF if the following conditions are true e Outside enthalpy gt Intake enthalpy and Intake enthalpy gt Enthalpy set point e Outside enthalpy lt Intake enthalpy and Intake enthalpy lt Enthalpy set point Description of operation Freecooling and freeheating control by enthalpy is enabled if the following conditions are always true e Temperature probes intake and outside and humidity probes intake and outside enabled e Freecooling by enthalpy enabled PJ The purpose of the function is to maintain the intake enthalpy as near as possible to the enthalpy set point The following cases are possible 1 2 En kJ kg En kJ kg SETP SETP 3 En kJ kg En J kg SETP SETP 5 6 SETP Enthalpy set point Inside enthalpy ENE RO En kJ kg Outside enthalpy SETP SETP In conditions 1 and 2 it is not useful to open the outside damper as the inside enthalpy is closer than the outside enthalpy to the enthalpy set point
50. an cutout DI3 Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter differential differential differential pressure differential differential differential differential pressure differential pressure pressure switch pressure switch switch pressure switch pressure switch pressure switch switch switch DI4 Pump cutoutin Pump cutoutin Pump cutout in Pump cutout in Pump cutout in Pump cutout in Pump cutout in Pump cutout in heating heating heating heating heating heating heating heating DI5 Outlet air filter Pump cutout in Pump cutout in Pump cutout in Outlet air filter Pump cutout in Pump cutout in Pump cutout in differential cooling cooling cooling differential cooling cooling cooling pressure switch pressure switch Heat recovery Outlet air filter Outlet air filter Outlet air filter Heat recovery Outlet air filter Outlet air filter Outlet air filter differential differential differential pressure differential differential differential differential pressure differential pressure pressure switch pressure switch switch pressure switch pressure switch pressure switch switch switch Intake air flow Heat recovery Heat recovery Heat recovery Intake air flow Heat recovery Heat recovery Heat recovery switch differential differential pressure differential switch differential differential pressure differential pressure pr
51. ans Cold step 1 R W Ja Select the position of the output for the activation of the first direct expansion 1 to 18 cooling step Cold step 2 R W Ja Select the position of the output for the activation of the second direct expansion 1 to 18 cooling step Cold step 3 R W Ja Select the position of the output for the activation of the third direct expansion 1 to 18 cooling step Digital outputs open 3p cooling R W Jb Select the position of the output for opening the 3 point valve on the cooling coll 1 to 18 Close cool R W Jb Select the position of the output for closing the 3 point valve on the cooling coll 1 to 18 Digital outputs open 3p Post R W Jc Select the position of the output for opening the 3 point valve on the post 1 to 18 heating heating coll Close Post H R W Jc Select the position of the output for closing the 3 point valve on the post heating 1 to 18 coil Valve 3p Open heat R W Jd Select the position of the output for opening the 3 point valve on the heating coil 1 to 18 Close heat R W Jd Select the position of the output for closing the 3 point valve on the heating coil 1 to 18 Step fan 1 R W Je Select the position of the first fan speed in fan coil mode 1 to 18 Step fan 2 R W Je Select the position of the second fan speed in fan coil mode 1 to 18 Step fan 3 R W Je Select the position of the third fan speed in fan coil mode 1 to 18 ANALOGUE OUTPUTS gt recovery Analogue
52. ay the speed of the rotary heat recovery unit 0 100 Recovery Humidifier analogue output R Ig Display the opening of the humidifier output 0 100 Digitals outputs C Close O Open R Ih _ Status of digital outputs 1 18 C O 10 11 18 C closed O open SET POINT 15 button terminal PGD with 6 buttons or Built in terminal SET POINT button ESC and SET POINT button in the menu Active Temperature Setpoint R SO Display the set point used for control E Intake setpoint control R W S1 Set the set point for control with the intake probe 26 999 to 999 DI Different R W S1 Set the differential for control with the intake probe K 999 to 999 2 Neutral Z R W S1 Set the dead zone for control with the intake probe Outlet setpoint control R W S2 Set the set point for control with the outlet probe pe 999 to 999 22 Different R W S2 Setthe differential for control with the outlet probe K 999 to 999 2 Neutral Z R W S2 Set the dead zone for control with the outlet probe C Humid regulation Room set R W S3 Setthe set point for control with the intake humidity probe OorH 999 to 999 50 Diff R W S3 Set the differential for control with the intake humidity probe rH 999 to 999 10 Neutral Z R W S3 Set the dead zone for control with the intake humidity probe orH 99 to 99 5 Fan Coil manual management R W S4 Select the speed of the fan coil controlled with manual management 1 2 3 speed sa recovery Setpoints cross flow R W
53. button terminal PGD with 6 buttons or Built in terminal PROG MENU button ESC and MANUFACTURER button in the menu Password Manufacturer R W ZO Enter manufacturer password 0 to 9999 1234 CONFIGURAZIONE gt Regulation type R W Co Select the type of control Automatic Fixed point Control probe Change mode with R W Co Select the control probe Intake temp Change mode by Outlet temp External thermostat Ext air damper R W C1 Select type of control for the outside air damper Modulating ON OFF Fixed opening Damper output R W C1 Select type of control of the damper outputs Single Separate Mixed air damper R W C2 Enable mixing air damper Y N Expulsion R W C2 Enable discharge air damper Y N Heating Cooling R W C3 Select the device to change the operating mode Outside temp Keypad Din Control 2 probe Supervisor Cold Hot R W C3 Select the operating mode from the screen Cool Heat Status R C3 Display the current status Cool Heat Ventilation R W C4 Select the type of fan operation Temp control Continuous Fan coil External therm Star delta R W C4 Select the type of fans controlled Direct Star delta Inverter Automatic R W C4 Select the type of control for the operation of the fans Automatic Manual Fan cutouts R W C5 Enable fan cutout None Outlet Intake Out In Air filter R W C5 Enable air filter None Outlet Intake Out In Control Din Airflow R W C6 Enable digital control of the air flow Y N Ai
54. damper with the CO2 air quality ppm 0 to 999 100 probe Neutral Z R W S9 Setthe dead zone for managing the outside damper with the CO2 air quality ppm 0 to 999 0 probe Heating cooling temperature R W Sa Setthe set point for changing from heating to cooling and vice versa based on the E 0 to 999 14 setpoint External temperature read by the outside probe Dig In Setpoint Room R W Sb Setthe set point for control with the intake probe selectable by digital input CE Outlet R W Sb Set the set point for control with the outlet probe selectable by digital input G MAINTENANCE 15 button terminal PGD with 6 buttons or Built in terminal MAINTENANCE button ESC and MAINTENANCE button in the menu CAREL S p A R W AO Software version screen contains the code version and date of the software ITALIAN FLSTDMAHUA Ver X XXX XX XX XX installed in the board ENGLISH Language The Language parameter is used to select the language displayed on the user FRENCH interface GERMAN Bios R Al Screen containing file system information boot bios and the manual code and Boot version Manual 030220260 of version 3 0 Outlet fan operations Outlet R A2 Outlet fan operating hours H Fan Return R A2 Intake fan operating hours H Compressor 1 operations 1 R A3 Compressor no 1 operating hours H Compressor 2 R A3 Compressor no 2 operating hours H Password Maintenance R W A4 Set the password to enter the maintenance menu Fans Working hours Thr
55. dentification The meaning of the symbols O 0 is explained in the previous paragraph The symbol PSW indicates the screens that require the password to be entered Ojee 0 O O O fee AO lo ko So Pwo Fi ww jj oH os oF oR VO Comm User Man K4 7 ka code 030220261 rel 3 5 of 20 05 08 34 Standard air handling unit e p Eu code 030220261 rel 3 5 of 20 05 08 Dig Out J0 J J2 5 J4 J5 J6 J7 J8 J9 Ja Jb jc Jd Je PSW Z0 An Out 10 LI 2 13 14 15 l6 Li Times e TO Ti 72 73 O 14 15 T6 oo Si nitial V0 VI 2 3 v4 5 6 Test devices RO RI R2 R3 R4 R5 R6 k7 Standard air handling unit 9 Control 9 1 Switching the unit ON OFF 9 1 1 Description of operation The unit can be switched on off using the following utilities 1 Keypad on the user terminal Ze Time bands 3 Digital input 4 Supervisor The highest priority is given to the ON OFF from the keypad and therefore if the unit is switched OFF from the keypad it cannot be switched on from any other source The conditions such as OFF from digital input OFF from time bands and OFF from the supervisor are only active if the unit is switched ON from the keypad The main screen MO displays t
56. e 1st 2nd 3rd speed Je Parameters used Select the type of fan coil control AUTOMATIC C4 Speeds enabled 1 2 3 P7 Description of operation Fan coil control is based on the signals from the control probe The signal from this probe activates the fan speed steps on the fan coll Graph of fan coil activation with request from control probe Speed of the fan coil SETP DIFF Control differential Control dead zone ON OFF Treg C Devices used Position of the digital outputs for the Ist 2nd 3rd speed Je Parameters used Select the type of fan coil control MANUAL C4 Speeds enabled 1 2 3 P7 Select fan coil speed Il 111 S4 Manual fan coil control Manual fan coil control involves the management of the fan speed on the fan coils with the unit on by setting the parameter on screen S4 in the set point branch Fan coil control by external thermostat Inputs used Position of digital inputs 1 2 3 for controlling the fan speed by external thermostat D8 Devices used Position of the digital outputs for the Ist 2nd 3rd speed Je Parameters used Number of speeds enabled 1 2 3 PZ Description of operation Fan coil control by external thermostat features 3 digital inputs to control the fan speed The status of these three digital inputs provides the meaning shown in the table Dio D2 Dia Famspeed Fan OFF Status of the digital outputs The digital outputs dedicated
57. e VFD actuator Cq pLAN serial 0 or Fieldbus serial 2 RS485 serial port via Modbus communication protocol HO Parameters used Minimum outlet fan speed N1 Maximum speed outlet fan N1 Minimum intake fan speed N2 Maximum speed intake fan N2 Number of stop bits H1 Parity setting H1 Communication speed H2 VFD peripheral address settings H3 Activation deactivation times T3 In addition there is a fixed delay of 10 seconds between the start of the outlet fan and the start of the intake fan Description of operation The operation of the fans with VFD can be based on the reading of the pressure probe or the outlet temperature probe According to the control selected PID control in the case of pressure or proportional control in the case of the outlet temperature is used to modulate the fan speed Graph of activation see below 10 8 3 Fan control by thermostat in on off mode based on request case 1 In this mode the fans can be controlled with star delta or direct starting Operation is not modulating when the request is present heating cooling humidification dehumidification the contacts close and the fans operate at 100 Once the request Is satisfied the fans switch off 0 The devices are switched on and off considering the corresponding delay times set T3 Inputs used Position of the control probe C3 Position of the ambient humidity probe Ec Parameters used All the parameters used for temp
58. e parameter on screen Cg Is set to preheating The preheating probe can be located downstream of the humidifier or downstream of the preheating coll Three types of preheating coil are possible e coil with three point valve e coil with modulating valve e heater coll code 030220261 rel 3 5 of 20 05 08 44 10 3 2 Preheating coil with three point valve Devices used Position of the digital output for opening closing the three point valve Jd Parameters used Valve opening time in heating T8 Description of operation When a request Is active either opening or closing the corresponding contact remains energised for a time proportional to the request A valve opening time Is envisaged expressed in seconds If the request in progress is between 10 and 90 the opening or contact closing will remain energised for the value of the request as a percentage of the total set energising time If the request is between 90 and 100 or between 0 and 10 the opening and closing time Is no longer proportional to the request The controller completely opens and closes the valve and then activates the closing or opening contact respectively for the time required to move to the desired position Example Standard air handling unit The example describes the case where the opening request is equal to 50 with a total opening time set to 180 seconds The opening contact remains energised for 90 seconds 50 of 180 seconds A
59. e pressure e Continuous modulation on the outlet temperature e Continuous modulation on the pressure the following types of fans can be selected e 0 10Vanalogue output e VFD Variable Frequency Driver TYPE OF FAN ME ne Star delta 1 ON OFF 0 100 0 100 Request from thermostat 2 Start upon request and modulation based on the outlet temperature adi 0 100 0 100 Start upon request and modulation based on the pressure 0 100 0 100 _4 ON A ow fjw Continuous Start upon request and modulation based on the outlet temperature ee 0 100 0 100 6 Start upon request and modulation based on the pressure EE 0 100 0 100 Fancol 7 Control requet Al Control request request 0 33 66 100 via 0 33 66 100 viadigitaloutputs outputs Fan coil by external 0 FIAT EN Control request 0 33 66 100 via digital outputs Fan with star delta starting On Off With this type of starting each fan configured uses three digital outputs The digital outputs DO1 DO3 or DO1 DO6 automatically ignore the configuration made on the terminal and take the following meaning DO1 outlet fan line contactor DO2 outlet fan delta contactor DO3 outlet fan star contactor DO4 DO5 DO6 same sequence but for the intake fan The contact activation times are set on screen T5 Graph of fan activation with star delta starting OUT n ri Te CL ON OFF CS ON OFF De
60. e probe Oto 10V Min level VOC air quality probe R W Ej Minimum value read by the probe Maximum R W Ej Maximum value read by the probe 0 to 1000 1000 Min level CO2 air quality probe R W Ek Minimum value read by the probe ppm Maximum R W Ek Maximum value read by the probe ppm 0 to 2500 2500 Position compens Setpoint probe R W El Select the position of the set point compensation probe 1 to 10 Pre heating R W El Selectthe position of the preheating temperature probe 1 to 10 Probe type Compens setp R W Em Type of signal used by the probe PT1000 NTC 0 to 20mA 4 to 20 mA 0to1V 0 to 10V Pre heating R W Em Type of signal used by the probe PT1000 NTC 0 to 20mA 4 to 20 mA 1 Oto 1 V Oto 10 V Probe limits Setp compensation R W En Minimum value read by the probe ne Minimum Maximum R W En Maximum value read by the probe ES 0 to 999 50 Min level preheating probe R W Eo Minimum value read by the probe Ze Maximum R W Eo Maximum value read by the probe C Position probe Antifreeze temp R W Ep Select the position of the defrost probe 1 to 10 Defrost probe R W Ep Select the position of the antifreeze probe 1 to 10 Probe type Antifr temp R W Eq Type of signal used by the probe PT1000 NTC 0 to 20mA 4 to 20 1 mA 0to1V 0 to 10V Defrost temp R W Eq Type of signal used by the probe PT1000 NTC 0 to 20mA 4 to 20 1 mA 0to1V 0 to 10V Min level antifreeze temp Probe R W Er Minimum value read by the probe e Ma
61. e probe is higher than the value of the antifreeze set point 2 C fixed differential ON ENNE 10 3 10 Winter start up Inputs used Position of the outside temperature probe E8 Parameters used Enable winter start up Ca Outside temperature set point and duration of winter start up Pc Description of operation The winter start up function if enabled involves the following actions 1 The damper ts closed if during the start up phase the outside temperature is less than the limit value set Heating Is activated at maximum output whatever device Is enabled for heating for the set time The cooling coil is forced to 25 The text Winter start is shown on screen MO The fans are forced to Off Shar Oe 10 4 Heat recovery unit Heat recovery units are exchangers that transfer heat between flows of intake and discharged air The controller manages 3 types of heat recovery unit e Cross flow the discharged air is sent to the heat exchanger and gives up part of its heat to the flow of colder outside air that also passes through the same exchanger in a cross flow arrangement e Double coil the discharged air passes through a first coil water or gas giving up part of its heat to the fluid in the coil which then flows to a second coil where it in turn gives up its heat to the fresh air e Rotary in rotary heat recovery units the heat is exchanged due to the accumulation of heat in the rotor in fact while the cylinder
62. ectors for each circuit The compressors managed by the control probe are only activated in the cooling phase Graph of compressor activation Status of the compressor SETP Control dead zone ON DIFF Control differential OFF In the event where the dehumidification request is present the software forces the activation of the compressors present Graph of compressor activation dehumidification request Status of the compressors SETP Humidity control set point ON DIFF Humidity control differential Intake humidity OFF Hroom rH DIFF SETP 10 2 1 Times Parameters used Minimum compressor on time TO Minimum compressor off time TO Minimum time between starts of different compressors T1 Minimum time between starts of the same compressor T2 Description of operation The management of the compressors features the following times e Minimum compressor ON time e Minimum compressor OFF time e Delay between starts of the same compressor e Delay between starts of different compressors code 030220261 rel 3 5 of 20 05 08 43 Standard air handling unit 10 2 2 Alarms Inputs used Position of compressor 1 2 cutout D2 Position of the low pressure switch for compressor 1 2 D3 Position of the high pressure switch for compressor 1 2 D4 Parameters used Delay time for the low pressure alarm 17 Enable the compressor high low pressure switch Cf Enable the overload protection
63. ed frequency reference for the outlet actuator By default when FROM AIN1 MODBUS Require type starting stopping the actuator via digital input pCO digital output the FROM AIN2 application assigns the serial port Modbus as the source of the FROM PANEL frequency speed request FROM MODBUS FROM MOTOR POT FROM PID Alarms gravity R W NI Select the level of seriousness of VFD alarm intake outlet no 3 NOT SERIOUS NOT S Serious L light SERIOUS SERIOUS AL03 ALO9 R W NI Select the level of seriousness of VFD alarm intake outlet no 9 NOT SERIOUS NOT SERIOUS SERIOUS AL11 R W NI Select the level of seriousness of VFD alarm intake outlet no 11 NOT SERIOUS NOT SERIOUS SERIOUS AL15 R W NI Select the level of seriousness of VFD alarm intake outlet no 15 NOT SERIOUS NOT SERIOUS SERIOUS AL16 R W NI Select the level of seriousness of VFD alarm intake outlet no 16 NOT SERIOUS NOT SERIOUS SERIOUS AL17 R W NI Select the level of seriousness of VFD alarm intake outlet no 17 NOT SERIOUS NOT SERIOUS SERIOUS Alarms gravity RAV Nm Select the level of seriousness of VFD alarm Intake outlet no 29 NOT SERIOUS NOT S Serious L light SERIOUS SERIOUS AL29 AL50 RAW Nm Select the level of seriousness of VFD alarm intake outlet no 50 NOT SERIOUS NOT SERIOUS SERIOUS AL53 RAW Nm Select the level of seriousness of VFD alarm intake outlet no 53 NOT SERIOUS NOT SERIOUS SERIOUS AL54 RAV Nm Select the level of ser
64. efrost relay C9 Description of operation The defrost temperature sensor signals the formation of frost The software has a dedicated digital output for the activation of an external utility for performing the defrost If the defrost temperature is less than the set point differential defrost situation present the relay Is activated If the defrost temperature Is greater than the set point differential defrost situation absent the relay is deactivated 10 1 5 Management of the pump in cooling Parameters used Enable pump cutout alarm in cooling Ca Outputs used Position of the pump digital output in cooling 18 The controller features a digital output for managing the pump in the cooling coll circuit if present in the air handling unit If cooling is performed by a mixed coll the circuit has one valve only that manages the flow of liquid The pump is started if the cooling request Is present In the event of a cooling pump cutout alarm the controller closes the contact and consequently deactivates the circulating pump 10 1 6 Outlet temperature lower limit Devices used Position of the outlet temperature probe E4 Parameters used Lower limit and differential of the outlet temperature in cooling Pe Enable outlet temperature lower limit Pe Description of operation In cooling operation control can be activated on the outlet temperature to avoid reaching too low temperatures and prevent condensate forming in the
65. el 2 Model 3 Model 5 Model 6 Model8 8 E air Intake air Intake air Intake air Intake air Intake air Intake air ee air temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature temperature _ temperature temperature _ temperature temperature _ temperature temperature temperature Antifreeze Antifreeze Antifreeze Antifreeze Antifreeze Antifreeze temperature temperature temperature temperature temperature temperature B5 Preheating Preheating temperature temperature input Se table models 1 to 8 EEE EEE fan Outlet fan Outlet fan cutout Outlet fan Outlet fan Outlet fan Outlet fan cutout Outlet fan cutout cutout cutout cutout cutout cutout Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter differential differential differential differential differential differential differential pressure differential pressure pressure switch pressure switch pressure switch pressure switch pressure switch pressure switch switch switch DI4 Outlet air flow Outlet air flow Outlet air flow Outlet air flow Antifreeze Antifreeze Antifreeze thermostat Antifreeze thermostat switch switch switch switch thermostat thermostat DI5 Heater cutout Outlet air flow Outlet airflow Outlet air flow switch Outlet air flow switch switch switch Humidifier Humidifier Humidifier alarm Humidifier
66. elay T6 to prevent both coils from working instantly at the maximum output and thus avoid excessively heating the air 2 Compensation in dehumidification to ensure a faster response the coil is controlled by the outlet temperature probe The post heating coil is activated to compensate for the lowering of the temperature due to the function of the cooling coll for dehumidification The activation of the post heating coil depends on the type of management selected automatic or fixed point CO This subject is described in detail in the chapter on Control The post heating coil uses a differential that is double the value of the differential set for the heating function this ensures that the post heating coil stops operating the before the heating coil as the temperature approaches the set point code 030220261 rel 3 5 of 20 05 08 46 Standard air handling unit Graph of the activation of the post heating coil SETP DIFFX2 Post heating temperature differential DIFF Heating temperature differential Temperature control dead zone 100 OUT Modulating heating and post heating output 0 T reg C 100 0 T reg C DIFFX2 SETP 10 3 6 Pump management in heating Parameters used Enable pump cutout alarm in heating Ca Outputs used Position of the pump digital output in heating 18 Description of operation The controller features a digital output for managing the pump in the heating coll circuit
67. ement the main heating coil TEMPERATURE PRIORITY only Not active Active Not active Not active Active if necessary to supplement main coil A de and managed by control probe probe HUMIDITY PRIORITY Dehumidification phase Heating phase Cooling coil Post heating coil for compensation Post heating coil Comp Supp only Not active Active Not active Not active Active if necessary to supplement main coil and managed by control probe Controlled by the intake humidity Controlled by the outlet probe Controlled by supply probe to compensate probe Controlled by the intake humidity Controlled by the outlet probe Controlled by supply probe to compensate probe 9 4 Temperature control Inputs used Position of the outlet temperature probe E4 Position of the intake temperature probe E4 Position of the outside temperature probe E8 Position of the preheating probe El Parameters used Select the control probe CO Display the current set point S0 Intake control set point differential dead zone S1 Outlet control set point differential dead zone 52 Set point for selecting the operating mode heating cooling according to the outside temperature S9 Select heating cooling from Out temp control temp from the keypad from digital input C3 Manual selection of the operating logic Heating cooling C3 Integration time for Pl control with intake temperature control G4 Integration time for Pl control with
68. en the control pressure is less than the set point G0 G2 Inputs used Position of the outlet pressure probe EO Position of the intake pressure probe EO Parameters used Outlet fan control set point and differential GO Integration and derivative times for outlet fan control G1 Intake fan control set point and differential G2 Integration and derivative times for intake fan control G3 Enable analogue control of the air flow Intake Outlet Outlet Intake C6 Graph of activation OUT Request status and fan request ON OFF SRV peat Ed na ON OFF CV Modulating fan output Minimum fan speed Pressure outlet intake in Pascal SETP Fan pressure control set point DIFF Fan pressure control differential Fomin INTAKE Pa SETP code 030220261 rel 3 5 of 20 05 08 59 Standard air handling unit 10 8 6 Fan control in continuous mode based on unit ON OFF case 4 In this mode the fans can be controlled with star delta or direct starting Operation is not modulating when the unit starts the contacts close and the fans operate at 100 When the unit stops the fans switch off 0 The devices are switched on and off considering the corresponding delay times set T3 Graph of activation OUT SAHU Delay between starts of the same fan Fan stop delay Time expressed in seconds CV a le T s 10 8 7 Fan control in continuous mode based on unit ON OFF and modulation
69. ending During operation the fans can be controlled in the following modes e ON OFF e Modulation based on the outlet temperature e Modulation based on the pressure Continuous mode Fan control in continuous mode starts and stops the fans intake and outlet according to the activation and deactivation of the air handling unit In the event of serious alarms the fans are switched off irrespective of the status of the unit During operation unit ON the fans can be controlled in the following modes e ON OFF e Modulation based on the outlet temperature e Modulation based on the pressure Fan coil control fan coil control is based on the signals from the control probe The signal from this probe activates the fan speed steps on the fan coil Fan coil control by external thermostat Fan coil control is based on the signals from the control probe The signal from this probe activates the fan speed steps on the fan coil 030220261 rel 3 5 of 20 05 08 94 Standard air handling unit 10 8 2 Types of fan As summarised in the table below by setting the following operating modes e Request from thermostat based on unit ON OFF e Continuous based on unit ON OFF the following types of fans can be selected e Fans with star delta starting A Fan with direct starting Setting on the other hand the following operating mode e Request from thermostat and modulation on the outlet temperature e Request from thermostat and modulation on th
70. equency Supply fan VFD R W Motor nominal speed B3 B3 B4 B4 B5 B5 B6 B6 B7 B7 B8 B8 B9 B9 Ba Ba Bb Bb NO NI NI N2 N2 N3 N4 N5 N6 N7 N8 N9 Na Nb Percentage request to the intake VFD Current frequency of the intake actuator Speed of the motor connected to the outlet actuator Speed of the motor connected to the outlet actuator Speed of the motor connected to the intake actuator Speed of the motor connected to the intake actuator Current of the motor connected to the outlet actuator Torque of the motor connected to the outlet actuator Current of the motor connected to the intake actuator Torque of the motor connected to the intake actuator Power of the outlet actuator motor Voltage of the outlet actuator motor Power of the intake actuator motor Voltage of the intake actuator motor DC link voltage measured Temperature of the heat sink DC link voltage measured Temperature of the heat sink Enable write parameters to VFD outlet intake Outlet fan speed in the interval between outlet temperature set point dead zone Outlet fan speed for outlet temperature greater less than the set point dead zone differential Intake fan speed in the interval between outlet temperature set point dead zone Intake fan speed for outlet temperature greater less than the set point dead zone differential Direction of rotation taken by the outlet actuat
71. equired from the application software installed on the pCO2 pCOXS e 1MB dedicated flash memory The system saves the data to the 1MB flash memory on the memory expansion code PCO200MEMO As an example 1MB of memory can contain 5000 alarm events with 5 values for each alarm and save 2 values for example temperature and pressure every 5 minutes for 6 months e _ Possibility to define up to 7 different log configurations Typically each controller will have an alarm log configured and a log of the control values temperature humidity pressure and some logs of the logs e Lookup the data saved from the LCD terminal external or built in or from a connected PC e Black box operation The memory expansion that contains the logs can be removed from the pCO on the controlled unit and inserted in another pCO2 to lookup the data saved This pCO2 does not need to run the same software as the original e Reliability of the data saved The data are saved to FLASH memory that does not require batteries that may discharge If following a software update the previously saved data are incompatible with the new software all the data will be deleted following confirmation 12 2 1 Configuration using WinLOAD The advanced log can be configured with WinLoad32 using the LogsEditor function Further explanations are available in the on line help under the section Log Configuration Table Editor code 030220261 rel 3 5 of 20 05 08
72. erature control humidification and dehumidification code 030220261 rel 3 5 of 20 05 08 06 Standard air handling unit Graph of activation OUT sry ON OFF Request status and fan request a Fan start delay CV De Delay between starts of the same fan Fan stop delay Time expressed in seconds 10 84 Fan control by thermostat based on request with modulation based on the outlet temperature case 2 This mode is used to control modulating fans with to 0 10V analogue signal or managed by VFD Operation Is modulating when the request Is present heating cooling humidification dehumidification the contacts close and the fan speed starts modulating based on the outlet temperature and depending on the maximum VFD only and minimum limits set Once the request Is satisfied the fans are switched off 0 The devices are switched on and off considering the corresponding delay times set T3 Inputs used Position of the temperature control probe C3 Position of the ambient humidity probe Ec Position of the outlet temperature probe E4 Parameters used All the parameters used for temperature control humidification and dehumidification Control outlet temperature set point S2 Differential for outlet temperature control S2 Dead zone for outlet temperature control 52 Graph of activation OUT ON OFF SRV Request status and fan request Fan start delay Delay between starts of the same fan ON OFF CV
73. eshold R W A5 Setthe maintenance alarm threshold for the fans H Compressors Working hours R W A6 _ Set the maintenance alarm threshold for the compressors H Threshold Reset fan hour meter Outlet R W A7 Reset the hour counter for the outlet fan Fan Return R W A7 Reset the hour counter for the intake fan Reset compressor hour meter R W A8 _ Reset the hour counter for compressor 1 Compressor 1 Compressor 2 R W A8 _ Reset the hour counter for compressor 2 Pressure probe offset Supply R W A9 Value to be added to or subtracted from the value read by the outlet pressure Pa probe Value read by the probe Room R W A9 Value to be added to or subtracted from the value read by the intake pressure Pa probe Value read by the probe Temp probes offset Room R W Aa Value to be added to or subtracted from the value read by the intake g temperature probe Value read by the probe Suppl R W Aa Value to be added to or subtracted from the value read by the outlet C temperature probe Value read by the probe Temp probes offset Exte R W Ab Value to be added to or subtracted from the value read by the outside ge temperature probe Value read by the probe Exp R W Ab Value to be added to or subtracted from the value read by the discharge z6 temperature probe Value read by the probe Set ambient humidity probe R W Ac Value to be added to or subtracted
74. essure switch switch pressure switch pressure switch switch switch Outlet air flow Intake air flow Intake air flow Intake air flow Outlet air flow Intake air flow Intake air flow switch Intake air flow switch ansa Antifreeze Outlet air flow Outlet air flow Outlet air flow Antifreeze Outlet air flow Outlet air flow switch Outlet air flow switch thermostat switch switch switch thermostat switch LC Antifreeze Antifreeze thermostat Antifreeze Antifreeze Antifreeze thermostat Antifreeze thermostat thermostat thermostat thermostat Q y code 030220261 rel 3 5 of 20 05 08 16 Standard air handling unit Digital output configuration table models 17 to 24 Model 18 Model 19 Model 20 Model 21 Model 22 Model 23 Model 24 Outlet fan Outlet fan Outlet fan Outlet fan Outlet fan Outlet fan Outlet fan Outlet fan Intake fan Intake fan Intake fan Intake fan Intake fan Intake fan Intake fan W fan DO4 Pump solenoid Pump solenoid Pump solenoid Pump solenoid Pump solenoid Pump solenoid Pump solenoid valve ical valve in heating valve in heating valve in heating valve in heating valve in heating valve in heating in heating in heating _ Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Filter blocked Mii CE T_T fis a output configuration table models 17 24 Model 17 17 Model 18 Model 19 Model 20 Model 21 Model 22 Model 23 Model24 24 Dn outside air Mod outs
75. est in progress on intake temperature probe the fans acquire the speed requested by the outlet temperature probe according to their own control parameters The following graph shows an example of the relationship between fan control based on the outlet temperature and temperature control based on the intake temperature The fans only start when there Is a request outside of the interval SETP NZ and are controlled following the trend in the outlet temperature code 030220261 rel 3 5 of 20 05 08 08 Case of speed at set point higher than Standard air handling unit speed off set point OUT HEATING COOLING SOS OUT 100 RISCALDAMENTO RAFFREDDAMENTO 0 i i T rage C i DIFF I NZ NZ i DIFF i SETP 10 8 5 Fan control by thermostat based on request with modulation based on the pressure case 3 This mode is used to control modulating fans with to 0 10V analogue signal or managed by VFD Operation is modulating when the request Is present heating cooling humidification dehumidification the contacts close and the fan speed starts modulating based on the pressure EO and depending on the maximum VFD only and minimum limits set Once the request is satisfied the fans are switched off 0 The devices are switched on and off considering the corresponding delay times set T3 PID control is used If the integration and derivative times are set to zero the fan is managed with proportional control The fan is activated wh
76. harge temperature outside temperature Rotary heat recovery unit modulating output 0 SETP 10 4 4 Alarms The following alarms deactivate the heat recovery unit e Antifreeze alarm from digital input e Antifreeze alarm from analogue input e Heat recovery unit blocked alarm enabled only when the fan is on 10 5 Outlet and intake air filter Inputs used Position of the outlet air filter differential pressure switch D5 Position of the intake air filter differential pressure switch D5 Devices used Blocked filter signal J8 Parameters used Enable the dirty filter input on the outlet intake outlet intake C5 Air flow alarm delay time T7 Description of operation The condition of the filtering system in the unit in terms of cleaning is measured by the differential pressure switch located upstream and downstream of the filters Which filters are present and the corresponding alarms can be enabled C5 e None no filter and alarm enabled e Outlet enable the outlet filter alarm e Intake enable the intake filter alarm e Outlet and Intake enable both filters corresponding alarms code 030220261 rel 3 5 of 20 05 08 49 10 6 Outside air damper Freecooling and Freeheating Inputs used Position of the outlet flow switch DO Position of the intake flow switch DO Position of the outside air temperature probe E8 Position of the intake and outside humidity probe Ec Position of t
77. he intake temperature probe E4 Devices used Outside air damper control L1 ON OFF control for air damper J9 Parameters used Enable dehumidification control C8 Enable the mixture and discharge dampers C2 Enable outside air damper control C1 Differential for freecooling control Pk Minimum opening of the damper Pa Set point for intake humidity control 53 Type of freecooling freeheating P Duration of freecooling freeheating operation only PI Enthalpy freecooling heating offset and differential Pm Atmospheric pressure setting Pn Damper control The software can manage the outside air damper with the following functions e Freecooling Freeheating by temperature e Freecooling by enthalpy e Dew point e Ar quality The dampers can be controlled in the following modes C1 e Modulating e ON OFF freecooling freeheating cannot be activated e Fixed opening Standard air handling unit The dampers on the module can be activated together or separately When enabled together all the dampers are activated by the same output If enabled separately the user decides which dampers discharge and mixture to enable C2 consequently these are then controlled by different outputs The ON OFF damper output remains activated In any case 10 6 1 Freecooling Freecooling if enabled is active when the following condition is true Intake temperature Outside temperature gt Freecooling differential
78. he unit operating status I COMFORT Unit in operation 2 OFF FROM ALARM Unit off from alarm di OFF FROM THE SUPERVISOR Unit off from the supervisor 4 OFF FROM TIME BAND Unit off from time bands D OFF FROM REMOTE DI Unit off remote digital input 6 UNIT OFF Unit off from the keypad 7 ALARM Unit in operation with alarm active The procedure for switching the terminal on changes according to the terminal used e External terminal with 15 buttons pCO1 or pCOT series the unit is switched ON OFF directly using the ON OFF button e Built In or pGD series terminal the unit is switched ON OFF as follows from the main screen MO press the down arrow button to move to screen M1 from screen M1 set the unit status from unit OFF to COMFORT or vice versa 9 2 Fixed point control Inputs used Position of the outlet and intake temperature probes E4 Position of the preheating probe El Parameters used Select the type of control CO Select the control probe for the preheating coil Ch Select the control probe for the cooling coil Ck Select the control probe for the post heating coil Cn Description of operation With this type of control each coil on the unit works in independently and is controlled by a defined probe without the software intervening automatically The probe that controls the coll must be selected according to the constructional characteristics of the installation Below Is a summary table DEVICE CON
79. humidity Digital output humidifier ON OFF Hroom rH SETP 10 7 1 Outlet humidity upper limit Inputs used Position of the outlet humidity probe Ec Parameters used Enable outlet humidity upper limit control Pg Outlet humidity upper limit and differential of Pg Description of operation The upper limit of the outlet humidity is used to prevent excessive humidity values in the room that may lead to the formation of condensate in the outlet ducts The humidity upper limit is controlled in two ways depending on the type of humidifier control On Off or modulating Humidifier with modulating control The humidity upper limit decreases if the value of the outlet humidity is between the limit differential and set point The graph shows how the limit decreases proportionally as the outlet humidity approaches the set point differential code 030220261 rel 3 5 of 20 05 08 D3 Standard air handling unit Graph of outlet humidity upper limit modulating humidifier 100 0 OUT SETP Outlet humidity limit set point DIFF Outlet humidity limit differential Hsupply Outlet humidity Modulating humidifier output Hsupply rH Humidifier with ON OFF control In the case of humidifiers with ON OFF control the upper limit function acts directly on the humidifier enabling signal Based on the values of the limit set point and differential Pg the outlet humidity control function acts as follows als
80. ide air Mod outside air Mod outside air Mod outside air Mod outside air Mod outside air a outside air dampers dampers dampers dampers dampers dampers dampers dampers Y2 _ Modulating valve Modulating valve Modulating valve in Modulating valve Modulating valve Modulating valve Modulating valve in Modulating valve in in heating in heating heating in heating in heating in heating heating heating Y3 Modulating outlet Modulating valve Modulating valve in Modulating valve Humidifier Modulating valve Modulating valve in Modulating valve in fan in cooling cooling in cooling in cooling cooling cooling Y4 Bypass damper Modulating outlet Modulating valve in Bypass damper Bypass damper Humidifier Humidifier Humidifier post heating OO Bypass damper Bypass damper a Modulating outlet Bypass damper Bypass damper Bypass damper fan Modulating outlet Modulating valve in code 030220261 rel 3 5 of 20 05 08 17 Standard air handling unit 7 List of parameters This table contains the list of all the parameters that appear on the screens with the corresponding description Parameter text shown on the screen Type read R read write R W Ref index of the screen Description brief description of the parameter UOM unit of measure Range range of values Default default value set by the manufacturer Note column available for the user s notes IMPORTANT Not all the screens listed below will be d
81. ii o II iii i 7 1 1 VETO REI qe mver 2 0 WO IO SION 7 1 2 tteduenon and MINGHONS pernormed DY TREO deer neee eee ee ae eee eneen 7 1 3 GOMBE NIAWIER e 8 PNE e as 9 2 1 sandra OEM cet PP o AR 9 22 BUIS ch een 10 2 3 A A A 10 NP e PPP o Pd OU OUR NN 11 Selectie N NE cc 1 MERIDA A A e e PO 0 POR I ene aon 1 OM SUS Ea A o ian ai 11 MP II A N 18 AEE A A EEE AA N S S ENNE EREN 34 8 1 e o E AE cnt rn E E EEA AN EAA ese E E AA 34 ERE E EEA A RO CONT E A O TT 36 9 1 e ten bent oreert tete 36 9 2 FIMO OIE GOR liane 36 9 3 AMO A dean a e ea 36 9 4 a ilo 37 PROCESSES managed byan ait NIUE icilian 39 10 1 A e ate tunen venne tenen 39 iz Compressa 43 10 3 nt E halide deerd ien edere 44 10 4 Poe 48 105 Qutletand intake a 49 10 6 Guts ae al CaO el FCCC OO aan AFFee Release 50 10 7 FUT OR iii 53 10 8 linee aulin 54 10 9 Communication between the pCO and the VFD devices Modbus RTU protocol over RS485 63 10 10 Communication between the pCO and Belimo controllers MP BUS protocol 66 10 11 EER E OO O 67 10 12 tl elos meer RRA 67 A Ri Mt tee 68 11 1 SE RR e ene eene ee nnen 68 iz F510 295 8 saison 68 Alarm NOP enden Pr EOS LEENE 70 12 1 RENEE Non 70 Iean Peirce 70 12 3 SERRE ER O RO OO CO O eene 71 12 4 Database of sUpervisorvVariaDleS cln lidia ulandisi 71 A II 76 Standard air handling unit 1 Introduction 1 1 Main new features in version 2 0 New functions 1 Management
82. ing the set point from digital input Inputs used Position of the digital input to change the set point D9 Parameters used Enable change set point from digital input Pp Enable outlet and intake set point from digital input Sb Description of operation By enabling this function on screen Pp the control set points outlet and intake can be replaced with two set points on screen Sb when the status of the digital input set changes 9 4 2 Changing the operating mode heating cooling Inputs used Position of the digital input to change the operating mode D7 Parameters used Select the type of change operating mode C3 Select the probe to change operating mode C0 Set point to change mode heating cooling from outside temperature Sa Select the operating mode from the keypad C3 Description of operation The operating mode heating cooling can be changed in the following ways e Outside temperature e Keypad digital input e Control probe change mode probe e Supervisor If changing mode based on the outside temperature the controller automatically selects the operating mode heating cooling by comparing the value measured by the outside temperature probe against the set point on screen Sa The mode is changed using the keypad by accessing the parameter on screen C3 visible only when this mode is set for changing operation The mode is changed from digital input by configuring the desired input on screen D7 The mode Is
83. input for compressor 1 2 Ce Description of operation The management of the compressors features the following alarms on each circuit e High pressure alarm e Low pressure alarm e Compressor cutout alarm The high pressure and compressor cutout alarms act immediately when generated immediately switching off the compressor and signalling the alarm situation This Is to prevent serious problems with the installation as well as dangerous situations for the air handling unit The low pressure alarm on the other hand is activated after a set delay time After this time during which the problem persists the controller stops the compressor and signals the alarm situation 10 3 Heating Inputs used Position of the outlet temperature probe E4 Position of the intake temperature probe E4 Position of the antifreeze temperature probe Ep Position of the antifreeze thermostat digital input D5 Devices used Position of the output for the pump in heating J8 Position of the digital output for opening closing the three point valve Jd Position of the output for the modulating valve in heating L4 Position of the heaters J5 Parameters used Select the function of the heating coil Heating Preheating Cg Enable control with device three point valve modulating valve heaters Ci Enable the protection contact for the pump in heating Ca Intake control set point differential dead zone S1 Outlet control se
84. int and differentials for each Y N individual heater Heaters parameters Heat Setp 1 R W P2 Set the activation set point for the first second and third heater expressed as a 0 to 99 Heat Setp 2 Heat Setp 3 percentage of the control differential Heaters parameters Heat Diff 1 R W P3 Set the activation differential for the first second and third heater expressed as a 0 to 49 Heat diff 2 Heat diff 3 percentage of the control differential code 030220261 rel 3 5 of 20 05 08 21 Standard air handling unit 3 Direct expansion number R W P4 Setthe number of direct expansions used on the unit Oto 3 Modify direct expansions number R W P4 Enable modification of the set point and differentials of intervention for each Y N individual step of direct expansion Direct expansion Setp 1 Setp 2 R W P5 Set the activation set point for the first second and third direct expansion stage 0 to 99 Setp 3 expressed as a percentage of the control differential Direct exp Diff 1 Diff 2 Diff 3 R W P6 _ Set the activation differential for the first second and third direct expansion stage 0 to 49 expressed as a percentage of the control differential Number of fan speeds enabled R W P7 Set the number of fan coil speeds enabled Oto 3 3 Configure defrost relay Set p
85. intake air quality probes R I5 Display the quantity of VOC present in the air Ppm Probe limits C02 R I5 Display the quantity of CO2 present in the air Ppm Probe limits Set point compensation probe R l6 Display the temperature read by the compensation probe AE Probe limits Preheating R l6 Display the preheating temperature E Probe limits Internal enthalpy R I7 Display the inside enthalpy calculated by the controller kcal kg Screen limits External expressed in kcal kg R I7 Displaythe outside enthalpy calculated by the controller kcal kg Screen limits Enthalpy setpoint Regarding T and R I8 Display the enthalpy set point kcal kg Screen limits H setp in kcal kg Digital Input C close O open R I9 Status of digital inputs 1 18 C O 10 11 18 C closed O open Analogue valve output in heating R la Display the opening of the valve in heating 0 100 Cooling R la Display the opening of the valve in cooling 0 100 Mixed analogue valve output R lb Display the opening of the mixed valve 0 100 Analogue outputs Post Heating R Ic Display the opening of the valve in post heating 0 100 valve Dampers outputs Air External R Id Display the opening of the outside air damper 0 100 Mixing R Id Display the opening of the mixing air damper 0 100 Outlet fan analogue outputs R le Display the outlet fan speed 0 100 Return R le Display the intake fan speed 0 100 Analogue outputs Rotative heating R If Displ
86. ions in the management of the outside damper If freecooling freeheating by enthalpy is enabled the outside damper cannot be controlled for freecooling freeheating by temperature or humidity The minimum opening set for the damper acts as the lower control limit for freecooling freeheating management by enthalpy Example e Minimum damper opening 20 Request for freecooling heating by enthalpy 15 Modulating outside damper output 20 e Minimum damper opening 20 Request for freecooling heating by enthalpy 25 Modulating outside damper output 25 10 6 5 Control with air quality probe Inputs used Position of the CO2 air quality probe Eh Position of the VOC air quality probe Eh Devices used Position of the outside damper L1 Parameters used Enable air quality control Cb Set point differential and integration time for VOC air quality control S8 Set point differential and integration time for CO2 air quality control S9 Description of operation with air quality control The request for renewal air due to VOC or CO2 control has priority over the temp control request for the modulation of the outside air dampers for freecooling freeheating This means that the outside air damper can open even if the outside temperature conditions or enthalpy are not favourable for freecooling freeheating The air will in any case be conditioned before being introduced into the room The outlet temperature limit is always respected If control
87. iousness of VFD alarm intake outlet no 54 NOT SERIOUS NOT SERIOUS SERIOUS AL55 RW Nm Select the level of seriousness of VFD alarm intake outlet no 55 NOT SERIOUS NOT SERIOUS SERIOUS code 030220261 rel 3 5 of 20 05 08 3l Standard air handling unit VFD menu MANUFACTURER gt Manufacturer R W QO Enable write parameters to VFD outlet intake N Y N Enable write param Supply fan VFD R W Q1 Minimum outlet actuator frequency Hz 0 0 to Max freq Min frequency Return fan VFD R W Q2 Minimum intake actuator frequency Hz 0 0 to Max freq Min frequency Supply fan VFD R W Q3 Maximum outlet actuator frequency Hz Min freq to 320 0 50 0 Max frequency Return fan VFD R W Q4 Maximum intake actuator frequency Hz Min freq to 320 0 50 0 Max frequency Supply fan VFD R W Q5 Acceleration time of the outlet actuator S 0 1 to 3000 1 0 Acceleration time Return fan VFD R W Q6 Acceleration time of the intake actuator S 0 1 to 3000 1 0 Acceleration time Supply fan VFD R W Q7 Deceleration time of the outlet actuator S 0 1 to 3000 1 0 Deceleration time Return fan VFD R W Q8 Deceleration time of the intake actuator S 0 1 to 3000 1 0 Deceleration time Supply fan VFD R W Q9 Type of outlet actuator operation RAMP Start function FAST CONN Return fan VFD R W Qa Type of intake actuator operation RAMP Start function FAST CONN Supply fan VFD RAW Qb Type of outlet actua
88. isplayed by scrolling the cursor enabling a certain type of configuration may mean that the associated screens previously not present will now be displayed This therefore depends on the initial configuration Parameter Type Ref Description UOM Range Default Note MAIN SCREEN 15 button terminal PGD with 6 buttons or Built in terminal MENU button ESC button Room Temp R MO Temperature measured by the temperature sensor located at the intake 2G Screen Cc Room humid R MO Humidity measured by the humidity sensor located at the intake Screen Cd Unit status R W MI Display the status of the unit COMFORT UNIT OFF Displays the unit Current unit R W M2 Switch between boards on the shared terminal PGD terminals only CLOCK 15 button terminal PGD with 6 buttons or Built in terminal CLOCK button ESC and CLOCK button in the menu Clock time R W KO Set hour minutes 0 to 23 0 to 59 Date R W KO Set day month year 1 to 31 1 to 12 0 to 99 Day R W KO Setthe weekday Enable time Zone R W Kl Enable time band with set point variation N Y N Timing zone A 1 ON R W K2 Start hours and minutes for first A time band h amp min 0 to 23 0 to 59 Timing zone A 1 OFF R W K2 End hours and minutes for first A time band h amp min 0 to 23 0 to 59 Temperature setpoint Timing z A 1 R W K2 Set point relating to the first A time band C min lim max lim Fan inverter setpoint ti
89. l 3 5 of 20 05 08 39 Standard air handling unit e Priority to dehumidification In the first case the coil operates for dehumidification only when the temperature control request heating Is satisfied In the second case the coil operates for dehumidification even when the temperature control request heating Is yet to be satisfied Three types of cooling coil are possible e cooling coil with modulating valve e cooling coil with three point valve e direct expansion cooling coll 10 1 1 Cooling coil with modulating valve Devices used Analogue output of the modulating valve in cooling L4 Parameters used Enable the modulating valve in cooling Cj Description of operation The control function once the control probe has been selected adjusts the position of the valve in cooling proportionally to the 0 to 10V output signal If the outlet probe is installed the minimum outlet limit can be set to avoid the formation of condensate in the duct and the introduction of excessively cold air into the room If the outlet air temperature reaches this limit the controller reduces the contribution of cold water by closing the modulating valve proportionally Graph of the activation of cooling coil with modulating valve SETP Cooling set point with modulating valve control DIFF Cooling differential with modulating valve control os Tsupply Modulating valve output 0 Tsupply C SETP code 030220261 rel 3 5 of 20 05 08
90. l input the user can also select the desired position by scrolling using the UP DOWN buttons the list of free digital inputs Screens Dc Dd are used to set the operating logic N O N C of digital inputs 1 to 18 N O Normally open N C Normally closed Analogue inputs Scroll the Manufacturer menu on screen Z1 until reaching the item ANALOGUE I and confirm by pressing ENTER Each analogue input requires three setting parameters shown on the screens E0 Eu e Position occupied by the probe on the pCO board e Type of probe used to read the value in question e Operating limits of the probe where envisaged If the terminal number of an analogue input is set to 0 the further configuration screens for that input will not be displayed probe type and limits code 030220261 rel 3 5 of 20 05 08 11 Standard air handling unit Digital outputs Scroll the Manufacturer menu on screen Z1 until reaching the item DIGITAL O and confirm by pressing ENTER Screens JO Je are used to associate the relays on the board with the connected devices Analogue outputs Scroll the Manufacturer menu on screen Z1 until reaching the item ANALOGUE O and confirm by pressing ENTER Screens LO L7 are used to associate the outputs on the board with the connected devices Table of compatibility between the analogue inputs probe type Probe type x E x take pressure x Yoo gt X X Int
91. lay between star contact and delta contact 168 Fan stop delay Time expressed in seconds OFF lider ls Las T s RAF RSL RST RSF TST code 030220261 rel 3 5 of 20 05 08 90 Standard air handling unit Fan with direct starting On Off With this type of starting each fan configured is activated by one digital output only this can be configured on the terminal Graph of fan activation with direct starting OUT Fan start delay RICH Delay between starts of the same fan Fan stop delay Time expressed In seconds CV Fan with 0 10V analogue output modulating gt e gt dp T s Devices used Position of the outlet fan digital output JO Position of the intake fan digital output J0 Analogue intake fan control LO Analogue outlet fan control LO Parameters used Minimum outlet fan speed GO Minimum intake fan speed G2 Activation deactivation times 13 In addition there Is a fixed delay of 10 seconds between the start of the outlet fan and the start of the intake fan Description of operation The operation of the fans with 0 10V analogue output is based on the reading of the pressure probe According to the pressure value PID control is used to manage the modulation of the fan speed Graph of activation see below Fan with VFD modulating Devices used Position of the outlet fan digital output J0 Position of the intake fan digital output J0 Outlet VFD actuator Cq Intak
92. lt e Digital input e g pressure switch pCO Belimo connection diagram Attuatore Attuatore Actuator Actuator Actuator Belimo Belimo Belimo 2 8 Alarm management There are three types of alarms associated with the Belimo devices LAN this occurs when serial communication fails between the pCO and the Belimo actuators After five failed queries from the pCO to one of the Belimo actuators the buzzer is activated on the standard external LCD terminal and the alarm screen is displayed The alarm is featured for all the Belimo actuators in the network code 030220261 rel 3 5 of 20 05 08 66 Standard air handling unit 10 11 Time bands Parameters used Time and date setting KO Enable time band management K1 On and off hours and minutes for the first A time band K2 Set point for the first A band K2 Intake and outlet fan set point for band Al K3 On and off hours and minutes for the second A time band K4 Set point for the second A band K4 Intake and outlet fan set point for band A2 K5 On and off hours and minutes for time band B K6 Set point of the type time band B K6 Intake and outlet fan set point for band B K7 Select the type of band for the days of the week K9 Description of operation The system features a built in clock with backup battery optional on the pCOXS board that manages the time and date for all functions where
93. ltd lap gt gt T s code 030220261 rel 3 5 of 20 05 08 57 Standard air handling unit Control graphs OUT OUT Heating Cooling Heating Cooling SOS SOS l l I I I l O i i Tourer C NZ Tonel C i SETP SETP Unit temperature control Unit temperature control on the outlet temperature probe C3 and on the intake temperature probe C3 and speed at set point lt speed off set point speed at set point lt speed off set point OUT OUT Heating Cooling Heating Cooling SOS SOS I I Tourer C I DIFF DIFF I SETP SETP rp temperature control i Unit temperature control on the outlet temperature a C3 and on the intake temperature probe C3 and speed at set point gt speed off set point speed at set point gt speed off set point Outlet temperature in C DIFF Differential for fan outlet temperature control Dead zone for fan outlet temperature control The modulation of fan speed according to the temperature is always performed based the reading of the outlet temperature probe consequently e ifthe unit temperature control probe C3 is the outlet temperature probe then the fan control intervals correspond to the control intervals of the heating cooling devices e ifthe unit temperature control probe C3 Is the intake temperature probe then the fan control intervals do not correspond to the control intervals of the heating cooling devices This means that with a temp control requ
94. m by pressing Enter 4 WARNING this operation must be performed with care as it deletes all the parameters installed from the memory and replaces them with the default values the previous values cannot be recovered after the operation 5 After having pressed ENTER the message PLEASE WAIT will be displayed for a few seconds If updating the software with a new version the application automatically installs the default values for model 1 IMPORTANT the default values of the analogue inputs are not installed for the pCOxs board The user can decide the position of the probes see par 3 4 Configuring the analogue inputs 6 Configuring the inputs outputs The input output configuration screens are located in the password protected manufacturer branch to access this proceed as follows 1 Press the menu button from the main screen MO 2 From the menu select MANUFACTURER SETUP and press ENTER 3 Enterthe password and press ENTER if the password Is correct the screen Z1 will be displayed 4 Select the item required and make the necessary configuration If using a standard PCOT external terminal screen Z1 can be accessed directly by pressing MENU PROG together Digital inputs Scroll the Manufacturer menu on screen Z1 until reaching the ttem DIGITAL 1 and confirm by pressing ENTER Screens DO Db are used to associate the digital inputs with the connected devices The software automatically searches for the first free digita
95. me band A 1 R W K3 Set point relating to the pressure control of the outlet fan in band Al Pa 0 to 1000 Outlet Vent Return R W K3 Set point relating to the pressure control of the intake fan in band Al Pa 0 to 1000 Timing zone A 2 ON R W K4 Start hours and minutes for second A time band h amp min 0 to 23 0 to 59 Timing zone A 2 OFF R W K4 End hours and minutes for second A time band h amp min 0 to 23 0 to 59 Temperature setpoint Timing z A 2 R W K4 Set point relating to the second A time band C min lim max lim Fan inverter setpoint time band A R W K5 Set point relating to the pressure control of the outlet fan in band A2 Pa 0 to 1000 2 Outlet Vent Return R W K5 Set point relating to the pressure control of the intake fan in band A2 Pa 0 to 1000 Time band B 1 ON R W K6 Start hours and minutes for time band B h amp min 0 to 23 0 to 59 Timing zone B OFF R W K6 End hours and minutes for time band B h amp min 0 to 23 0 to 59 Temperature setpoint Time band z R W K6 Set point relating to time band B ye min lim B max lim Outlet fan inverter setpoint time R W K7 Set point relating to the pressure control of the outlet fan in band B Pa 0 to 1000 band B 1 Return fan R W K7 Set point relating to the pressure control of the intake fan in band B Pa 0 to 1000 Central Timing Zone C always ON W K8 Central Timing Zone D always OFF W K8 Weekly time bands M
96. meters o Outside temperature set point for activating the compensation function o Outside temperature differential for compensation o Maximum value of set point compensation The graphs below shows the curve achieved by compensating the control set point intake or outlet with the outside temperature probe Graph of the activation of set point compensation IMPRPHAT 0 DIFFEYT gt 0 MAXCOMP gt 0 SETR MAACOMP gt STR SET MAAT OMP Text C Text C DIFFEXT DFEEXT fje SETRAT SETBAT Sets IMPRPRAT lt 0 SETA DIFFEAT 20 MAXCOMP lt 0 MAXCOMP lt 0 Text C DNFREXT DIFREXP SETR SETE Set point with maximum compensation SETRI 10 Processes managed by an air handling unit 10 1 Cooling and dehumidification Inputs used Position of the outlet temperature probe E4 Position of the intake temperature probe E4 Position of the intake humidity probe Ec Parameters used Set point differential and working dead zone for intake humidity control S3 Enable the dehumidification process C8 Select the priority temp or humidity during dehumidification C8 Description of operation In an air handling system the cooling coil is used to satisfy two possible requests e Cooling temperature control e Dehumidification If dehumidification is requested the coil in question Is activated according to the set priority e Priority to temperature code 030220261 re
97. n R W C6 Enable analogue control of the air flow Y N Humidifier R W C7 Enable and select of the humidifier control output Not enabled Digit al outp ut Analogue output Enable dehumidification R W C8 Enable dehumidification management Y N Priority during Dehum R W C8 Enable the priority of temperature over humidity during the dehumidification Humidity request Temperature No priority Defrost output Relay R W C9 Enable defrost relay output Y N Antifreeze R W C9 Select the type of antifreeze alarm Not enabled NTC probe Digital input NTC probe Din Winter starter R W Ca Enable winter start up mode Y N Pump cutouts R W Ca Enable and select the position of the pump cutout No Cool Heat cool Heat code 030220261 rel 3 5 of 20 05 08 23 Y N Standard air handling unit Clock board Present R W Cb Enable the clock card on the pCOXS controller Enable air quality control R W Cb Enable air quality control Y N Heating recovery R W Cc Enable and select the type of heat recovery unit used Not enabled Cross flow Double coll Rotary Filter rec R W Cc Enable the heat recovery unit dirty alarm Y N By pass damp R W Cc Enable and select bypass damper control N Digt Analogue Protect digital inputs Smoke fire R W Cd Enable the fire smoke alarm Y N Switch door R W Cd Enable the inspection door open alarm
98. n H3 must correspond to the physical addresses set directly on the local control panel Alarms that shut down the outlet intake VFD actuator these are alarms from AL58 to AL70 for the outlet VFD and from AL83 to AL90 for the intake VFD These alarms are generated directly by the actuator and shutdown the device Consequently they also shutdown the unit Alarms that do not shut down the outlet intake VFD actuator these alarms are generated directly by the actuator and do not shut down operation Nonetheless these can be set as shutdown alarms in the application screens NI and Nm in this case they shut down the unit and display the screens from AL71 to AL81 for the outlet VFD and from AL96 to AL106 for the intake VFD If on the other hand they are not set as shutdown alarms they are simply signalled on generic minor alarm screens AL82 for the outlet VFD and AL107 for the intake VFD code 030220261 rel 3 5 of 20 05 08 65 Standard air handling unit 10 10 Communication between the pCO and Belimo controllers MP BUS protocol Parameters used Number of devices present in the MP BUS network Cp Description of operation The MP BUS protocol allows the pCO to control up to 8 Belimo actuators The devices are managed in Master Slave configuration where the pCO represents the Master while the Belimo devices are the Slaves The following is the procedure for configuring a pCO Belimo network Identify the number of
99. nit on in cooling mode OR _Digital input 88 RO Direct expansion enabled IAR _Digital input 30 RR Enable dehumidification _Digital input 10 ONR _Digital input UUR Digitalinput 122222222 CAR Enable dirty filter contact on the outlet 75 R Digital input 1322222 OBAR Enable dirty filter contact on the intake 76 ORC Digitalinput 1422222222 CARA Enable fire smoke input Digital input 15 BR Enable antifreeze control from digital input 1 78 R _Digital input 1622222222 16 R Unitoninheatingmode 79 R Digitalinput17 ooo OSR Enable the dirty heat recovery unit input 80 RW _Humidifier present CS R Enable compressor 2 thermal overload 86 RAW Enable remote ON OFF from digital input 89 RW Enable post heating OR Enable modulating valve in cooling R Enable modulating valve in heating 92 R_ Outlet pressure control BR Intake pressure control AR Enable outlet fan protection OR Enable outlet lower limit conto 98 RAW Enable outlet upper limit control 99 RW Enable outlet upper limit control for humidity Enable intake fan protection 101 RI Status of the inspection door switch 104 R Status of the outlet filter digital input 105 R Status of the intake filter digital input S 106 R Status of the fire smoke contact 107 R Status of the heat recovery unitflow 108 R Humidifier alarm 109 RI MTI A A Compressor 1 cutout alam 2 RO Compressor 2 cutout
100. nt digital inputs reset or temperatures returned to normal etc the screens disappear the red LED goes off and the message NO ACTIVE ALARM is displayed If the causes of one or more alarm are still present only the alarms whose causes are no longer present will be cancelled while the others remain displayed and the buzzer and red LED will come on again All the alarms have manual reset and therefore to reset them the operator must act directly on the terminal of the unit 12 Alarm log The alarm log is used to save the operating status of the air handling unit when alarms are activated or alternatively at certain moments Each record represents an event that can be displayed from the list of all the events available in the memory The log is used to resolve problems and faults as it can suggest the possible causes and solutions to the faults The program features two types of log the basic log and the advanced log Without the clock card optional on the pCOXS built in on the pC0 the log is not available 12 1 Basic alarm log A maximum of 150 events can be saved in the memory on the pCO2 and pCOXS boards The events are saved cyclically on reaching the hundred and fiftieth the next alarm will be saved over the oldest alarm The events saved can be deleted by the user via the delete event log parameter on screen AY The log screen can be accessed by selecting the ALARM LOG item in the main menu or by pressing the PRINTER button
101. o see the graph Humidity gt Set point set limit Differential the humidifier control signal is set to the logical value OFF Humidity lt Set point set limit the humidifier control signal is set to the logical value ON Graph of outlet humidity upper limit humidifier with ON OFF control ON OFF OUT SETP Humidity control set point DIFF Humidity control differential Hsupply Outlet humidity Humidifier digital output Hsupply rH DIFF SETP 10 8 Fans Inputs used Position of the temperature control probe C3 Position of the ambient humidity probe Ec Position of the outlet temperature probe E4 Position of the outlet pressure probe EO Position of the intake pressure probe EO Parameters used Select the operating mode C4 Select the control mode C4 Select the type of fan C4 Activation deactivation times T3 Description of operation In relation to the operating mode chosen the type of control and consequently the type of fans can be selected see the following chapter The paragraphs below describe the different operating modes in detail 10 8 1 Operating and control mode The intake and outlet fans can be controlled in the following modes 1 2 3 4 code Request from thermostat This type of control activates the fans intake and outlet based on the current request heating cooling humidification dehumidification The fans are only on when there is a request p
102. ogrammable V f curve on the intake actuator 0 0 to 100 0 V F curve midpoint frequency Supply fan VFD R W Qn Intermediate voltage of the programmable V f curve on the outlet actuator 0 0 to 100 0 V F curve midpoint voltage Return fan VFD R W Qo Intermediate voltage of the programmable V f curve on the outlet actuator 0 0 to 100 0 V F curve midpoint voltage Supply fan VFD R W Qp Output voltage at no frequency on the outlet actuator 0 0 to 100 0 Out voltage at 0Hz Return fan VFD R W Qq Output voltage at no frequency on the intake actuator 0 0 to 100 0 Out voltage at 0Hz Supply fan VFD R W Qr Switching frequency of the outlet actuator Hz 1 0 to 16 0 1 0 Switching freq Return fan VFD R W Qs Switching frequency of the intake actuator Hz 1 0 to 16 0 1 0 Switching freq Supply VFD advan R W Qt Modbus identifier of the generic parameter not featured in the loop of screens 0 to 32760 Address to be read written from to the outlet actuator code 030220261 rel 3 5 of 20 05 08 32 Return VFD advan Address code 030220261 rel 3 5 of 20 05 08 R W R W R R W R W R W R Qt Qt Qt Qu Qu Qu Qu Function to be performed for the outlet actuator address parameter to be read written from to the intake actuator Function to be performed for the intake actuator address parameter 33 Value to write to the outlet actuator Modbus address identifier parameter Modbus identifier of the generic pa
103. oint R W Pg Activation set point of the defrost digital output C 20 to 35 50 Diff R W Pg Activation differential of the defrost digital output K 0 to 100 20 Setpoint alarm NTC probe R W Pg Set the set point for the antifreeze alarm SE 10 to 100 30 antifreeze Minimum opening damper R W Pa Minimum opening of the outside air damper 0 to 99 30 Fixed opening damper R W Pa Fixed opening of the outside air damper 0 to 99 Min limits for outlet airflow R W Pb Minimum pressure differential allowed for the outlet fan below this value an Pa 0 to 999 100 alarm is generated Intake R W Pb Minimum pressure differential allowed for the intake fan below this value an Pa 0 to 999 100 alarm is generated Winter start up setpoint R W Pc Set the set point for the activation of winter start up C 999 to 999 8 Time R W Pc Setthe duration of the winter start up S 0 to 999 12 Setpoint stop Recovery external R W Pd Set point to the stop heat recovery unit based on the temperature read by the z9 100 to 100 2 Temperature outside temperature probe Supply setpoint Low temp limit R W Pe Enable lower limit based on the outlet temperature Y N Supply set R W Pe Set the outlet set point to be used as the lower limit E 0 to 999 18 Diff R W Pe Setthe outlet differential to be used with the lower limit K 0 to 999 2 High supply temp limits R W Pf Enable upper limit based of the outlet temperature Y N Supply set R W Pf Outlet set point to be used as the
104. on Tue R W K9 Select the type of time band for each day of the week A B C D Wed Clock not present R Ka code 030220261 rel 3 5 of 20 05 08 18 Standard air handling unit 15 button terminal PGD with 6 buttons or Built in terminal INPUTS OUTPUTS INPUT OUTPUT button ESC and INPUT OUTPUT button in the menu Intake temperature probes R I0 Display the temperature read by the intake probe Probe limits Outlet R IO Display the temperature read by the outlet probe Probe limits Outside temperature probes R l1 Display the temperature read by the outside probe G Probe limits Expulsion R Il Display the temperature read by the discharge probe SG Probe limits Intake humidity probes R 2 Display the humidity read by the intake probe Probe limits Outlet R I2 Display the humidity read by the outlet probe Probe limits External R I2 Display the humidity read by the outside probe Probe limits Antifreeze temperature probes R 15 Display the temperature read by the antifreeze probe CE Probe limits Defrost R 15 Display the temperature read by the defrost probe Probe limits Outlet pressure probes R l4 Display the pressure read by the outlet probe Pa Return R l4 Display the pressure read by the intake probe Pa Probe limits VOC
105. on step set points and differentials P4 Set point for the activation of the individual direct expansion steps P5 Differential for the activation of the individual direct expansion steps P6 Description of operation The direct expansion cooling coil manages a maximum of three cooling steps The initialisation procedures enable three steps and set the set points and differentials with fixed values in this way the control band is divided equally based on the number of heaters enabled The set point and differential for the activation of each individual step can be set by enabling the parameter on screen P4 The following graphs show the activation of the direct expansion steps using the default values of the parameters The following graphs show the activation of the direct expansion steps using the default values of the parameters Graph of the activation of the direct expansion outputs 1 2 3 ON EXP OUTPUT 1 OFF Treg C SETP ON EXP OUTPUT 2 OFF I I Treg C de NZ DIFF SETP ON EXP OUTPUT 3 OFF Treg C SETP SETP DIFF Control differential Control dead zone Control temperature Status of expansion outputs 1 2 3 code 030220261 rel 3 5 of 20 05 08 41 Standard air handling unit 10 1 4 Defrost Inputs used Position of the defrost probe Ep Parameters used Defrost control set point P8 Defrost control differential P8 Outputs used Defrost relay output J8 Enable d
106. onds fined NOP _AL28 Setpointcompensation probe fault 6Oseconds fed NOP AL29 Antifreeze temperature probefault 60seconds fined NOP _AL30 Discharge airprobefaut_ SO seconds fined PN AL31_ Outside air temperature probe fault 6Oseconds fed NOP A32 VOCair quality probe faut TO seconds fined NOP _AL33 VOC CO2 air quality probefault TO seconds fined NOP A34 Preheatingprobefault SO seconds fined NOP AL35 Outlet humidity probe fault GOsecomds fmed NOP pee AA _ ae A AAA 0 compressor mime A _ e code 030220261 rel 3 5 of 20 05 08 68 Standard air handling unit A39 Outletfanmaintenance NN Al4O0 Returnfanmaintenance NN As Clockboardfaut NN AL42 Alarmon Belimo device Cs NN AL43 AlarmonBelimodevice2 NN I AL44 AlarmonBelimodevice3 NN AL45 Alarmon Belimo device4 CO NN AL46 Alarm on Belimo device 5 No No Alar Alam on Be mo devices ee AL48 AlarmonBelimodevice7 NN I AL49 AlarmonBelimo device 8 NN I ALSO Alarm from digital input on Belimo device NN AL51 Generic filter digital input NN AL52 Outlet air flow analogue input ooo Setale Al Al53 Intake air flow analogue input ooo YO Stable A A54 Alarmfromcoolingunit NN I AL55 Postheating heater alarm NN Outlet VFD offline alarm 10 seconds fixed p_AL62 Low temperature cule VED A 1 o o A S AL63 High ampere outlet VFD Yes All DR EM eds ener kli Ales
107. onment by opening a damper so as to cool the environment and save energy e _ Freeheating action whereby outside air is introduced into the environment by opening a damper so as to heat the environment and save energy e Step this defines an area of the proportional band temperature or humidity inside which a device is on and at the same time also defines the activation and deactivation values of the device e Screen index alphanumeric index located in the top right of every screen e Outlet the air introduced in the environment e Screen the page shown on the display of the terminal e Master the Master is the board responsible for controlling the pLAN and consequently all the other boards connected generally this is the board with address 1 except when this is off or disconnected e MP BUS communication protocol 1200 Baud e Branch loop series of screens that concern the same subject and that can be easily scrolled by pressing the arrow buttons the branches are accessed by pressing one of the buttons on the terminal which displays the first screen in the loop e Range interval of values allowed for a parameter e Intake air drawn in from the outside and introduced into the AHU e _R R W Type of variable R read only RAV read and write e Set point defines a temperature or humidity value to be satisfied the system activates the heating or cooling devices until the temperature or humidity reach the set point e B
108. or Direction of rotation taken by the intake actuator Current limit of the outlet actuator Current limit of the intake actuator Rated voltage of the motor connected to the outlet actuator Rated voltage of the motor connected to the intake actuator Rated frequency of the motor connected to the outlet actuator Rated frequency of the motor connected to the intake actuator Rated speed of the motor connected to the outlet actuator Rated current in normal load conditions 40 C Rated current in heavy load conditions 50 C For the values of and refer to the VFD user manual code 030220261 rel 3 5 of 20 05 08 30 Hz Hz rpm Hz rpm je V C HZ Hz rpm Standard air handling unit si N Y 0 0 to 100 0 0 0 to 100 0 0 0 to 100 0 0 0 to 100 0 CLOCKWISE COUNTER CLOCKWISE CLOCKWISE ANTICLOCKWISE 0 3xl to 2x1 0 3 xl to 2x1 180 to 690 180 to 690 30 0 to 320 0 30 0 to 320 0 300 to 20000 VFD menu USER gt N 0 00 50 00 0 0 100 Y I 250 250 50 0 50 0 1440 Standard air handling unit m Return fan VFD R W Nc Rated speed of the motor connected to the intake actuator rp 300 to 20000 1440 Motor nominal speed Supply fan VFD R W Nd Rated current of the motor connected to the outlet actuator 0 3 xl to 2x1 l Motor nominal current Return fan VFD R W Ne Rated c
109. outputs intake fan R W LO Select the output for the intake fan 1 to 6 Outlet R W LO Select the output for the outlet fan 1 to 6 Ext Damper R W L1 Select the output for the outside air damper 1 to 6 Mixing damper R W L1 Select the output for the mixing damper 1 to 6 Exp Damper R W L1 Select the output for the discharge damper 1 to 6 Analogue output recovery bypass R W L2 Select the output for the heat recovery unit bypass damper 1 to6 damper Analogue output rotary heat R W L3 Select the output for the rotary heat recovery unit 1 to 6 code 030220261 rel 3 5 of 20 05 08 27 Standard air handling unit valve Cooling R W L4 Select the output for the modulating valve in cooling 1 to 6 Heating R W L4 Select the output for the modulating valve in heating 1 to 6 Mixing valve Cool heat Battery R W L5 Select the output for the mixed modulating valve 1 to 6 Analogue output Modulating valve R W L6 Select the output for the post heating valve 1 to 6 post heating Analogue output humidifier R W L7 Select the analogue output for humidifier management 1 to 6 PARAMETERS Outlet fan inverter Setpoint R W GO Management of the outlet fan Pa 9999 to 9999 Control set point for the outlet fan Diff R W GO Control differential for the outlet fan Pa 999 to 999 Offset R W GO Control
110. p _ Software version of the Belimo device configured Ver BIOS 5 Belimo 5 R Aq Type of Belimo device configured Type 5 Belimo 5 R Aq Current position of the Belimo device configured Actual pos 5 Belimo 6 serial number 6 R Ar Serial number of the Belimo device configured Belimo 6 R Ar Software version of the Belimo device configured Ver BIOS 6 Belimo 6 R As Type of Belimo device configured Type 6 Belimo 6 R As Current position of the Belimo device configured Actual pos 6 Belimo 7 serial number 7 R At Serial number of the Belimo device configured Belimo 7 R At Software version of the Belimo device configured Ver BIOS 7 Belimo 7 R Au Type of Belimo device configured Type 7 Belimo 7 R Au Current position of the Belimo device configured Actual pos 7 Belimo 8 serial number 8 R Av Serial number of the Belimo device configured Belimo 8 R Av Software version of the Belimo device configured Ver BIOS 8 Belimo 8 R Ax Type of Belimo device configured Type 8 Belimo 8 R Ax Current position 0 of the Belimo device configured Actual pos 8 Delete Historical Alarms R W Ay Delete the memory dedicated to the alarm log USER 15 button terminal PGD with 6 buttons or Built in terminal PROG button ESC and USER button in the menu User password R W PO Enter user password 0 to 9999 1234 Modify heaters threshold R W P1 Enable modification of the activation set po
111. pressed on the main screen MO displays the unit start up screen M1 4 DOWN ARROW this has three functions a scroll to the next screens in the same branch when the cursor is in the home position top L b decrease the value of a setting field when the cursor is inside the field for selection fields on the other hand pressing the arrow button displays the next option c if pressed on the main screen MO displays the unit start up screen M1 5 ENTER button used to move the cursor between the home position in the top L and the setting or selection fields or to save the values set for the parameters after the cursor has left the setting fields 6 UPARROW DOWN ARROW pressing these together accesses the screen for setting the address of the devices in the MP BUS network F1 code 030220261 rel 3 5 of 20 05 08 9 Standard air handling unit 2 2 Built in display Ed pCO built in terminal AA For the functions of the ALARM UP arrow DOWN arrow and ENTER buttons on the Built in terminal see the external terminal ON OFF as there is no ON OFF button the unit is switched on or off by accessing the ON OFF screen M1 pressing the UP ARROW or DOWN ARROW on the main screen MO LOOP OF SCREENS as there are no buttons that directly enter the loop of screens simply press the ESC button to display the list of the loops then use the arrow buttons to select the desired loop and confirm by pressing ENTER 2 3 PGDO DISPLAY wi
112. rameter not featured in the loop of screens Value to write to the intake actuator Modbus address identifier parameter Value read from the intake actuator Modbus address identifier parameter Value read from the outlet actuator Modbus address identifier parameter 32768 to 32767 Standard air handling unit READ WRITE 2000 to 2000 0 to 32760 READ WRITE 2000 to 2000 32768 to 32760 Standard air handling unit 8 Screens The user interface of this application is divided into loops branches of screens Screens not protected by password these are found in all loops except for PROG and MENU PROG They show the values read by the probes the status of the alarms the operating hours of the devices the time and the date in addition they are used to set the set point temperature and humidity and the clock These screens are indicated by the O symbol in the list of screens Password protected USER screens password 1234 modifiable these are accessed by pressing the PROG button and are used to set the main functions set point differentials of the devices connected These screens are indicated by the symbol in the list of screens Password protected MAINTENANCE screens password 1234 modifiable these are accessed by pressing the maintenance button and are used to periodically check the devices calibrate the probes connected modify the operating hours and manually manage the devices
113. rature for the activation of the heat recovery unit S5 Description of operation The function acts on the external pump managing the circulation between the two coils of the heat recovery unit The output is active when 1 Unit is On 2 Request of heating or cooling 2 1 In presence of Heating request must be satisfied the following condition discharge temperature gt outside temperature heat recovery unit set point 55 2 2 In presence of Cooling request must be satisfied the following condition discharge temperature lt outside temperature heat recovery unit set point 55 10 4 3 Management of the rotary heat recovery unit Devices used Analogue output for controlling the speed of the rotary heat recovery unit L3 Parameters used Set point and control differential of the rotary heat recovery unit S6 Description of operation The control function acts by changing the rotation speed of the heat recovery unit Standard air handling unit The rotation speed is controlled based on the difference between the discharge temperature and the outside temperature and consequently the heat recovery unit will be off when this difference is equal to the set point while it will be operating at maximum speed when the difference is equal to the set point differential Graph of the operation of the rotary heat recovery unit SETP Heat recovery unit speed control set point DIFF Heat recovery unit speed control differential Disc
114. reeze Outlet air Outlet air Outlet air Outlet air Outlet air Outlet air temperature temperature temperature temperature temperature temperature temperature temperature B4 Outside air Outside air Antifreeze Antifreeze Antifreeze Antifreeze Antifreeze Antifreeze temperature temperature temperature temperature temperature temperature temperature temperature B5 Intake air Intake air Outside air Outside air Outside air Outside air temperature temperature temperature temperature temperature temperature Outside air Outside air Preheating air Preheating air Preheating air Preheating air temperature temperature temperature temperature temperature temperature Digital input configuration table models 9 to 16 EEE Mode EEN Outlet fan Outlet fan Outlet fan cutout Outlet fan Outlet fan Outlet fan Outlet fan cutout Outlet fan cutout cutout cutout cutout cutout cutout Intake fan Intake fan Intake fan cutout Intake fan Intake fan Intake fan Intake fan cutout Intake fan cutout cutout cutout cutout cutout cutout Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter Intake air filter differential differential differential pressure differential differential differential differential pressure differential pressure pressure switch pressure switch switch pressure switch pressure switch pressure switch switch switch Outlet air filter Outlet air filter Outlet air filter Outlet
115. responding alarms and priorities 9 4 4 Control set point compensation Set point compensation allows energy savings when the values of the control temperature or the outside temperature differ significantly from the needs of the controlled environment Inputs used Position of the intake temperature probe E4 Position of the outlet temperature probe E4 Position of the outside temperature probe E8 Position of the compensation probe El Parameters used Type of signal used by the compensation probe Active NTC Ph Select the probe used for the compensation of the set point Compensation disabled Outside temperature Intake temperature Set point compensation probe Ph Select the temperature control set point intake or outlet to be compensated Ph Outside temperature set point for activating the compensation function PI Outside temperature differential for compensation PI Maximum value of set point compensation PI code 030220261 rel 3 5 of 20 05 08 38 Standard air handling unit Description of operation The compensation function adds or subtract a delta value function of external temperature to the control set point Ph In mask Ph you can set the following parameters o Selectthe probe used for the compensation of the set point o type of compensation probe o select the temperature control set point intake or outlet to be compensated In mask Pi you can set the following para
116. rmostat Input 3 R W D8 Select the position of the third input for the control of the 3 fans by an external 1 to 18 thermostat Change regulation Setpoint by Digital R W D9 Select the position of the digital input to change the control set point 1 to 18 Alarm from cool unit R W Da Select the position of the external cool unit alarm input Heating R W Db Select the position of the heating coil input Post heating R W Db Select the position of the post heating coil input Digital inp Logic 1 9 R W Dc Configure the logic of digital inputs from 1 to 9 1 to 18 Digital inp Logic 10 18 R W Dd Configure the logic of digital inputs from 10 to 18 1 to 18 ANALOGUE INPUTS Position of outlet pressure probe R W EO Select the position of the outlet pressure probe 1 to 10 Return press R W EO Select the position of the intake pressure probe 1 to 10 Pressure probe type Outlet R W El Type of signal used by the outlet pressure probe 0to1V 0to 10 V 0to 20mA 4 to 20 mA Pressure probe type Return R W El Type of signal used by the intake pressure probe Oto 1V Oto 10V 0 to 20mA 4 to 20 mA Probes limit Supply pressure R W E2 Minimum value read by the outlet pressure probe Pa Minimum Maximum R W E2 Maximumvalue read by the outlet pressure probe Pa Oto 32767 2500 Probes limit Return pressure R W E3 Minimum value read by the intake pressure probe Pa Minimum Maximum R W E3 Maximumvalue read by the intake pressure probe Pa 0 to 32767 2500
117. s Parameters used Reset the operating hours of the intake and outlet fan A7 Reset the operating hours of compressor 1 2 A8 Alarm threshold for fan operating hours A5 Alarm threshold for compressor operating hours A6 Description of operation This alarm is activated when the operating hours of a device outlet fan intake fan and compressors 1 2 exceed the threshold set N B If the threshold is set to O hours this function is deactivated and no operating hour alarms are generated 11 1 2 Door switch alarm Inputs used Position of the door switch D6 Parameters used Enable door switch protection Cd Description of operation The door switch alarm is activated when the controller detects the opening of the inspection service door on the air handling unit This alarm acts by immediately switching off the fans and as a consequence all the devices on the unit 11 2 Table of alarms DEVICES OFF ALOS Dirty outlet airfilter seconds fined NOP ALO4 Dirty intake air fiter seconds fined PN Alig Heat recovery unit diy 60seconds fed NO A20 Directexpansionfaui Settable PN A22 Outetpressureprobefault GOseconds fmed NOP AL23 Intake pressure probe faut seconds fined NOP AL24 Outside humidity probefaut_ BO seconds fined PN A25 Outlettemperature probe fault CO seconds fined NOP AL26 Intake temperature probe fault 6Oseconds fed NOP AL27 Intake humidity probe fault sec
118. s 146 R Third heating coil step with electric heaters 147 R Second outlet fan step 4B YOR Secondintakefanstep MOR Defrost status YOR Winter start up status STOR Enable pre heating temperature probe 152 R Enable set point compensation probe 153 R Enable discharge probe SOR 1243 Integer variables Unitstatus TR Type of prode RR Typeofprobe2 RR Typeofprobe3 RR Typeofprobe4 YR Typeofprobe5 RR Typeofprobe6 TR Typeofprobe7 TR TypeofprobeB RR Typeofprobe9 OR Typeofprobe10 RR code 030220261 rel 3 5 of 20 05 08 74 Serious alarms active outlet VFD_ 168 R Not ready ready status intakeVFD 169 R Stop run status intake VFD_ IOR Direction of rotation intake Vi TOR Alarm status intake VFD OR Offline alarm intake FD SOR Minor alarms active intake VFD AOR Serious alarms active intake VFD 175 R Number of rings to wait for the modem to answer Compressor 1 operatinghours A R Compressor 2 operating hours 42 R Outlet fan operating hours 43 R Intake fan operating hours MJR Select type of post heating 1 compens in dehum 58 R W 2 compens integration Analogue air flow switch control 60 AW Standard air handling unit Generic parameter address outlet VFD RAW herome BW Intake inverter control set point 67 RW COZ quality probe reading en VOC air quality probe reading 69 R Outlet pressure probereading CSCO CRC Run function outlet VFD 96 R
119. t The heating limit decreases proportionally as the outlet temperature approaches the set point differential see graph code 030220261 rel 3 5 of 20 05 08 47 Standard air handling unit Graph of the activation of outlet temperature limit control SETP Outlet temperature upper limit set point DIFF Limit differential Tsupply 100 0 Tsupply C SETP 10 3 9 Antifreeze alarm Inputs used Position of the antifreeze thermostat input D5 Position of the antifreeze probe Ep Parameters used Enable antifreeze alarm from digital input NTC probe both C9 Set point for antifreeze control P9 Description of operation The antifreeze temperature is controlled using a temperature probe or alternatively an external thermostat A reference set point is defined and as soon as the temperature read by the antifreeze probe is less than the set point the antifreeze alarm is activated and the following precautionary actions are performed on the system Instant closing of the outside air damper Delay 0 seconds The heating coil modulating three point heaters is forced to the maximum output Instant shutdown of the compressors Deactivation of the cooling coll Deactivation of humidifier control The cooling coil is forced to 25 The heat recovery unit is operated so as to provide maximum recovery Instant shutdown of the fans he unit exits the antifreeze status when the temperature read by the antifreez
120. t intake VFD speed via Fieldbus R9 Start Stop intake VFD via Fieldbus R9 The software features a test procedure for checking the operation of the devices connected In the manufacturer branch selecting the item TEST DEVICES accesses a loop of screens RO R7 showing the analogue and digital outputs that are enabled and managed by the controller The first screen displayed RO is used to enable the device test procedure when enabling the procedure all the digital and analogue outputs are set to 0 so as to allow them to be controlled using the parameters on the test screens The test procedure can be terminated as follows e Disabling the procedure RO e Returning to the main screen MO after 5 minutes without pressing any button on the terminal code 030220261 rel 3 5 of 20 05 08 67 Standard air handling unit 11 Alarms The unit manages all the procedures relating to the individual alarms action delays reset and signals When an alarm is activated the devices are affected accordingly where featured and the following actions are performed simultaneously LED on buzzer on external terminal screen displayed and saving of the event in the log To check which alarm is active simply press the ALARM button and use the UP DOWN buttons to scroll to any other active alarms To reset the relay and delete the alarms display the alarm screen and press the ALARM button again 11 1 Special alarms 11 1 1 Operating hour alarm
121. t point differential dead zone 52 Comparison set point for the antifreeze alarm from NTC probe P9 Enable antifreeze control using NTC probe Digital input both C9 Enable winter start up Ca Description of operation Heating management is strictly linked to the characteristics of the installation Heating refers to the situation in which there is a single coil dedicated to this function in the other possible cases with two coils this function is divided into Preheating and Post heating Cg For convenience Preheating will also be used to describe systems with a single coil given that the device in question carries out the same function in both types of installation 10 3 1 Preheating Inputs used Position of the preheating probe El Parameters used Select the function of the heating coil Heating Preheating Cg Preheating temperature control set point differential integration time 57 Description of operation The preheating function as well as heating the air introduced into the room carries out two fundamental functions e Prevent the formation of frost on the coils in the installation when the unit is off e For adiabatic humidification it is essential to bring the temperature of the air being humidified to a level such that the absolute humidity can be reached in the humidifier that is the g kg of water vapour The control of the preheating probe is enabled if the preheating probe is fitted El and th
122. t power up the preheating coil is forced on at the maximum opening for a set time if the winter start up procedure is enabled 10 3 3 Preheating coil with modulating valve Devices used Position of the modulating valve in heating L4 Description of operation The signal to enable control on the modulating valve comes from the activation of the fans The valve is forced to the maximum opening in the following cases e During the winter start up phase e _ If antifreeze is active antifreeze probe thermostat Graph of the activation of the coil with modulating valve 100 0 Treg C sere BCO 10 3 4 Preheating coil with heaters Inputs used Position of the electric heater protection cutout D1 Devices used Position of heaters 1 2 3 Parameters used Enable preheating heaters CI Enable post heating heaters Co Select the number of heaters enabled P1 Enable modification of heater set points and differentials P1 Set point for the activation of the individual heaters P2 Differential for the activation of the individual heaters P3 Description of operation SETP DIFF Control differential Tsupply Outlet air temperature Modulating valve output The preheating coil with heaters manages a maximum of three heaters including heaters with different power ratings The initialisation procedure enables three heaters and defines fixed values for the set points and differentials so as to divide the
123. th 6 buttons The operation of the PGDO terminal is very similar to the Built In terminal access to the loop of screens on off etc To switch between boards using a shared PGDO terminal access screen M2 by pressing the UP or DOWN buttons on screen MO main screen code 030220261 rel 3 5 of 20 05 08 10 Standard air handling unit 3 Uploading the program 3 1 1 Uploading the program using the hardware key The hardware key available for all the versions of pCO2 code PCO201KEYO 1Mbyte version PCO202KEYO 2Mbyte version and the smart key code PCOSOOAKYO for the pCOxs and pCO creates exact copies of the software on a master pCO It is normally used on the production line for programming a series of pCO devices for programming in the field where it would be more complicated to upgrade the software via PC For further information refer to the instruction sheet included with hardware key or the smart key 3 1 2 Uploading the program from a computer Using the kit code PC485KITOO RS485 RS232 converter and the WinLOAD 32 program the software files can be uploaded to the pCO2 pCO3 and pCOXS For further information on installing and using Winload 32 see the on line help 3 1 3 System requirements The complete program in all four languages IT EN FR DE requires the 2Mb flash memory Starting from version 1 6 this application software does not work with BIOS versions prior to 3 57 For compatibility with the pCO3 the f
124. the user interface Displays the values corresponding to the maintenance of the devices operating hours of the device and reset hours access the manual MAINTENANCE operation procedure and the information on the software change language and the controller PRINTER Accesses the alarm log 10 INPUT Displays the status of the digital and analogue inputs and outputs AND OUTPUTS O CLOCK Accesses the first screen in the Clock loop KO The clock loop is used to display set the time and date and the on off temperature and humidity time bands SET POINT Used to set the set point and differentials PROGRAM Used to set the various operating parameters thresholds delays etc MENU PROG Accesses after entering the password the screens for setting the default values INFO Displays the version of the application software and other information on the unit Functions of the silicon rubber buttons 1 ON OFF button switches the unit on and off When the LED Is off the unit Is off When the LED is on green the unit is ON 2 ALARM button used to display the alarms delete them and mute the alarm buzzer 3 UP ARROW this has three functions a scroll to the previous screens in the same branch when the cursor is in the home position top L b increase the value of a setting field when the cursor is inside the field for selection fields on the other hand pressing the arrow button displays the previous option c if
125. tor stop BY INERTIA Stop function RAMP Return fan VFD R W Qc Type of intake actuator stop BY INERTIA Stop function RAMP Supply fan VFD R W Qd Ratio optimisation between outlet actuator motor voltage and frequency NOT USED V F optimisation AUTOMATIC TORQUE BOOST Return fan VFD R W Qe Ratio optimisation between intake actuator motor voltage and frequency NOT USED V F optimisation AUTOMATIC TORQUE BOOST Supply fan VFD R W Qf Automatic outlet actuator restart function NOT USED Automatic restart USED Return fan VFD R W Qg Automatic intake actuator restart function NOT USED Automatic restart USED Supply fan VFD R W Qh Control mode of the motor connected to the outlet actuator FREQUENCY Motor control mode SPEED Return fan VFD R W Qi Control mode of the motor connected to the intake actuator FREQUENCY Motor control mode SPEED Supply fan VFD R W Qj Type of frequency variation with the voltage of the motor connected to the outlet LINEAR V F ration selection actuator QUADRATIC PROGRAMMABLE LINEAR WITH FLOW OPTIMISATION Return fan VFD R W Qk Type of frequency variation with the voltage of the motor connected to the intake LINEAR V F ration selection actuator QUADRATIC PROGRAMMABLE LINEAR WITH FLOW OPTIMISATION Supply fan VFD R W QI Intermediate frequency of the programmable V f curve on the outlet actuator 0 0 to 100 0 V F curve midpoint frequency Return fan VFD RW Qm Intermediate frequency of the pr
126. turns slowly the discharged air flows through half of the shell and gives up heat to the rotor where it is accumulated The fresh air that slows through the other half absorbs the accumulated heat As the rotation continues the parts that absorb and give up heat are continuously inverted Following is a list of the parameters used that are common to the three types of heat recovery unit Inputs used Position of the outside air temperature probe E8 Position of the discharged air temperature probe E8 Position of the outlet temperature probe E4 Devices used Position of the input for the pressure switch controlling the heat recovery unit dirty alarm D6 Parameters used Select the type of heat recovery unit Cc Enable the heat recovery unit dirty filter input Cc code 030220261 rel 3 5 of 20 05 08 48 10 4 1 Management of the cross flow heat recovery unit bypass damper Devices used Position of the bypass damper output for the cross flow heat recovery unit 6 Description of operation The management of the cross flow heat recovery unit involves the ON OFF control of the bypass damper on the unit In the event where freecooling or freeheating are active the controller closes the damper thus deactivating the heat recovery unit 10 4 2 Management of the double coil heat recovery unit Devices used Position of the double coil heat recovery unit J6 Parameters used Set point for comparison with the outside tempe
127. uffer memory memory on the board used to save the default values set by CAREL for all the parameters in the software Permanent memory even without power e VFD Variable Frequency Driver inverter e VOC Volatile Organic Compounds e Dead zone this defines a very small temperature zone between the set point and the proportional band inside which the devices are not activated CAREL reserves the right to modify or change its products without prior notice code 030220261 rel 3 5 of 20 05 08 76 CAREL CAREL S p A Via dell Industria 11 35020 Brugine Padova Italy Tel 39 049 9716611 Fax 39 049 9716600 http www carel com e mail carel carel com Agency Cod CAREL 030220261 rel 3 5 date 20 05 08
128. ulating fans with to 0 10V analogue signal or managed by VFD Operation is modulating when the request is present the fan contacts close The fans acquire the speed determined by the controller based on the current reading of the pressure probe EO Once the request Is satisfied the fans are switched off 0 regardless of the control pressure The devices are switched on and off considering the corresponding delay times set T3 Parameters used Outlet fan control set point differential and offset GO Integration and derivative times for outlet fan control G1 Intake fan control set point differential and offset G2 Integration and derivative times for intake fan control G3 Enable analogue control of the air flow Intake Outlet Outlet Intake C6 Graph of activation OUT Status of the AHU On Off Fan contact SAHU AHU and fan request status SAHU CV Control graph Modulating fan output Minimum fan speed Pressure outlet intake in Pascal SETP Fan pressure control set point DIFF Fan pressure control differential pes ITI FT INTAKF Pa SETP code 030220261 rel 3 5 of 20 05 08 61 Standard air handling unit 10 8 9 Fan coil control and fan coil control by external thermostat cases 7 and 8 Fan coil control based on request Inputs used Position of the outlet temperature probe E4 Position of the intake temperature probe E4 Devices used Position of the digital output for th
129. urrent of the motor connected to the intake actuator 0 3 xl to 2 l Motor nominal current Supply fan VFD R W Nf Cosine of angle fi of the motor connected to the outlet actuator 0 30 to 0 99 Motor Cos fi Return fan VFD R W Ng Cosine of angle fi of the motor connected to the intake actuator 0 30 to 0 99 Motor Cos fi Supply fan VFD R W Nh Control mode of the outlet actuator Establishes the source of the DIN from DIN Control type activation deactivation control signal By default the application assigns the digital input digital input of the VFD that is the digital output of the pCO as the source PANEL from local control panel MODBUS from remote via Modbus protocol Return fan VFD R W Ni Control mode of the intake actuator Establishes the source of the DIN from DIN Control type activation deactivation control signal By default the application assigns the digital input digital input of the VFD that is the digital output of the pCO as the source PANEL from local control panel MODBUS from remote via Modbus protocol Supply fan VFD R W Nj Source of the speed frequency reference for the outlet actuator By default when FROM AIN1 MODBUS Require type starting stopping the actuator via digital input pCO digital output the FROM AIN2 application assigns the serial port Modbus as the source of the FROM PANEL frequency speed request FROM MODBUS FROM MOTOR POT FROM PID Return fan VFD R W Nk Source of the spe
130. ut R W Po Enable restart unit after blackout Off by remote ID R W Po Enable automatic start of the unit after stopping from remote digital input and Y N from the supervisor Off by Superv R W Po Enable automatic start of the unit after stopping from the supervisor Y N Setpoint change enable R W Pp Enable change set point from digital input Y N From Dig In from mask N R W Pp Enable change set point from mask Y N Floating setpoint enable R W Pq Enable floating setpoint Y N N Dehumidify limit R W Pr Dehumidify minimum limit 0 100 Minimum Maximum R W Pr Dehumidify minimum limit 0 100 100 Modify heaters post heating R W Ps Post heating heaters threshold activation modifying enable Y N N threshold Heaters parameters R W Pt Heater 1 activation setpoint 0 100 0 Heaters Setpoint 1 code 030220261 rel 3 5 of 20 05 08 22 Standard air handling unit 0 100 Heaters Setpoint 2 R W Pt Heater2 activation setpoint 100 n res Heaters Setpoint 3 R W Pt Heater3 activation setpoint 0 100 100 n htr 2 Heaters parameters R W Pu Heater 1 activation differential 0 100 100 n Heaters Diff 1 htr Heaters Diff 2 R W Pu Heater 2 activation differential 0 100 100 n res Heaters Diff 3 R W Pu Heater 3 activation differential 0 100 100 n htr MANUFACTURER 15
131. ween the software and the installation being managed such as e readings of the probes connected as well as calibration of the probes e unit on off e alarms e configuration parameters and operating parameters with password protected access e clock and time band settings no password Is required to access the clock branch e select one of the different languages available English Italian French German WARNING to avoid tampering during operation only qualified personnel must know the password Layout of the air handling unit 1 Outside air damper 2 Heat recovery unit 3 Fans 4 Heating coll 5 Cooling Coll 6 Post heating coil 7 Humidifier 8 Filter code 030220261 rel 3 5 of 20 05 08 7 1 3 Compatible hardware The program is compatible with the following devices e pCO2 small medium large e pCO3 small medium large pco e Standard external LCD e Built in LCD display on pCO2 and pCO e PGDO semi graphic display e PGDO built in display on pCO3 code 030220261 rel 3 5 of 20 05 08 Standard air handling unit Standard air handling unit 2 The user terminal 2 1 Standard external LCD Button Description Pressed in all loops except for the manufacturer loop returns to main screen in the Menu branch MO MENU Pressed in the manufacturer loop returns to the manufacturer menu Z1 Pressed on the main screen MO opens the menu of the loops available in
132. ximum R W Er Maximum value read by the probe 0 to 999 50 Min level defrost probe R W Es Minimum value read by the probe C Maximum R W Es Maximum value read by the probe C 0 to 999 50 Input position Heating by R W Et Select the position of the analogue input to receive the signal for the heating code 030220261 rel 3 5 of 20 05 08 26 Standard air handling unit thermostat ramp from the external thermostat Input position Cooling bt R W Eu Select the position of the analogue input to receive the signal for the cooling thermostat ramp from the external thermostat Digital outputs outlet fan T1 R W Jo Select the position of the first outlet fan 1 to 18 Supply T2 R W Jo Select the position of the second outlet fan 1 to 18 Digital outputs intake fan T1 R W J1 Select the position of the first intake fan 1 to 18 Return T2 R W J1 Select the position of the second intake fan 1 to 18 Digital outputs line outlet R W J2 Position of the line contactor for the outlet fan Fixed value Supply Delta R W J2 Position of the delta contactor for the outlet fan Fixed value Supply Star R W J2 Position of the star contactor for the outlet fan Fixed value Digital outputs line intake R W J3 Position of the line contactor for the intake fan Fixed value Return Delta R W J3 Position

Application program for Carel pCO2, pCO3, pCOxs User manual

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