Honeywell R7426A User's Manual
Contents
1. ignore ignore 18 00 night _ We 6 00 comfort ignore ignore ignore ignore 18 00 night Tn 6 00 comfort ignore ignore ignore ignore 18 00 night Fr 6 00 comfort ignore ignore ignore ignore 18 00 night sa 6 00 comfort ignore ignore ignore ignore 18 00 night Su 6 00 _ comfort ignore ignore ignore ignore 18 00 night Ht 0 00 of ignore ignore ignore ignore ignore H2 0 00 off ignore ignore ignore ignore ignore H3 0 00 off ignore ignore ignore ignore __ ignore Weekday or holiday type Programmed controller mode schedule mode Table 14 Example of weekly schedule and holiday types default Pe eee eee 28 Ho Ho Ho HO HO f Ho H1 Ho HO HO HO f Ho 29 Ho f Ho Ho Ho f Ho f Ho Ho Ho Ho Ho Ho f Ho 30 Ho f Ho j Ho Ho Ho Ho Ho Ho Ho Ho f Ho if the 29 of February is programmed to be a H1 or H2 holiday and the current year is not a leap year this holiday will be deleted on March 1 Table 15 Example of annual schedule no default EN1B 0203GE51 R0507C 16 R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Selecting Clock and Schedules with RTC only Vly2. 2 ET ae ae SEL DATE amp TIME SELECTION STANDARD SCHEDULE PROGRAMMING HOLIDAY SCHEDULE SELECTION HOLIDAY SCHEDULE PROGRAMMING Fig 13 Clock and schedules selection mode The clock and schedule selection mode is provided to select real time clock RTC standard schedule SCH or holiday schedule Hol for programming see Fig 13 Pushing the or button scrolls through the selection list Adjusting Date and Time with RTC only This mode is used to adjust date and time real time clock by the input sequence shown in Fig 14 During date adjustment the weekday is calculated auto matically and need not be programmed The 29th of February is adjustable only for leap years Pushing the SEL button returns to the selection mode ignoring adjustments which have not been confirmed by the SET button Due to battery change or low battery the date time can be invalid and is displayed as on the LCD In this case the controller behaves like a controller without real time clock If the occupancy input is inactive the controller will be assumed as occupied TO ADJUST HOURS TIME ADJUSTMENT TO ADJUST MINUTES TO ADJUST YEAR TO ADJUST MONTH DATE ADJUSTMENT TO ADJUST DAY Fig 14 Date and time adjustment mode 17 Programming Standard Schedule with RTC only The standard schedule programming is used to program up to 6 schedule points for each weekday as well
3. P 26 Controller with RTC only This control parameter is used to set the night mode offset During night mode freeze protection is active and the occupied unoccupied function is inactive Night Cycle NightLow and NightHigh P 24 and P 25 with RTC only The control parameters NightLow and NightHigh are used by the night cycle program controller mode OFF to assign unoccupied night low or high limits for the protection of a space and its contents against temperature extremes R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK UNOCCUPIED N N OCCUPIED CTRPH CTRPC Fig 5 Night cycle NightLow and NightHigh The night cycle program automatically cycles between the user selected upper and lower limits and turns on full heating or cooling with forced return air recirculation or full energy recovery whenever the limits are reached The switching hysteresis is fixed to 1 K This function can be disabled for heating and or cooling by setting NightLow and or NightHigh to OFF Calibration of Temperature Sensors TICAL T2CAL or T3CAL P 17 P 19 The controllers include a calibration setting and are factory calibrated In case of an offset as a result of long wiring lengths the temperature sensor inputs T1 T2 and T3 can be adjusted separately by the control parameters T1CAL T2CAL and T3CAL Return Air Offset RetOffs P 20 The control parameter RetOffs is available only
4. For cascade control the limit setpoint Wii determines the control point at which the submaster setpoint W maintains the limit value and is not shifted anymore by the master control loop High or low limit control is in accordance with the con figuration parameter LimTyp C 13 Submaster Setpoint W P 06 The R7426A B C controllers provide cascade control which uses two control loops master and submaster to maintain the master setpoint CTRP1 Cascade control will be active if temperature sensor T2 is connected and the control para meter W iS set to any value other than OFF This adjustment sets the control point of the submaster control loop discharge temperature T2 at Zero room temperature deviation If the room temperature deviates the submaster setpoint W is automatically altered Cascade control is disabled if the submaster setpoint Wesas is set to OFF Low limit of CTRP2 is performed if control parameter LimTyp 0 and high limit of CTRP2 is performed if control parameter LimTyp 1 Reset Span Adjustment Reas P 07 The reset span adjustment Reas determines the reset effect in Kelvin The submaster setpoint W is altered if the tem perature T1 deviates by 50 of the throttling range Xp1 Throttling Range Xp1 Xp2 P 08 P09 Proportional band throttling range X adjustment determines the temperature change required at the main sensor T1 and R7426A B C TEMPERATURE CONTROLLER WITH AND WI
5. Rev Reverse acting output signal C 04 Ctrityp Control type selects the setpoint operating range and default parameter Lo setting or Il for ne Lo 0 50 C for ventilation systems factory preset Hi1 0 130 C for heating systems li a 0 130 C with pump ON OFF operation 05 CPATYP sensor eE setpoint unit type TYP meter range range numbers internal CPA 5K internal 953 1053Q CPA 5K T7412B1016 Pt 1000 T7412B1057 T7412C1030 Pt 1000 100kQ 0Q CPA 5K T7412B1008 T7412C1006 NTC 20kQ2 43193982 001 10 20KQ SPA T7412B1024 BALCO 500 19 2 30 C T7412B1040 Pt 1000 0 10kQ CPA 5K HCW 23 setpt wheel printed with 5 K 0 100kKQ SPA 15 30 C 43193982 001 0 50 C 0 100kQ 430 C 43193982 001 C 06 YRange seers the output control range for all outputs Y1 Y2 and Y3 10 Vdc 10 Vdc C 07 Startup rabies the start up routine Disabled Enabled C 08 Y1Mode Y1 output mode selects an individual output function for Y1 C 09 Y3Mode Y3 output mode selects an individual output function for Y3 C 10 Y2Mode Y2 output mode selects an individual output function for Y2 Synchronous floating 2 stage ON OFF 3 stage binary coded ON OFF Pulse width modulation Unconfigured C 11 YMode Selects the output mode for sequence operation or multistage ON OFF func 0 Damper cooling and heating Y1 Y2 Y3 i control for heating or cooling Y1 Y2 Y3 Ei 6 stage ON OFF 2 ie c
6. 0 100 2 10VDC 0 100 25 125 gt 0 12V 0 120 gt 0 12V DIR 20 100 gt 12 0V REV by the SET button are ignored by the controller and old parameter values will be retained SUBMASTER LIMIT SETPOINT CTRP2 COMPENSATION TEMPERATURE T3 HUMIDITY H DEVIATION XwmS R7426B C ONLY p 0 OUTPUT Y1 Gf fJjoutrut v2 z R7426B C ONLY v OO fjoutPet v3 rh DURING THE AUTOMATIC SYNCHRONIZATION FOR A CORRECT POSITIONING OF THE ACTUATORS Syn IS DISPLAYED TOGETHER WITH THE CORRESPONDING OUTPUT NUMBER Fig 8 Standard display mode 13 EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Displaying Actual Values In the standard display mode one of nine actual values the actual time or the date can be selected and displayed by pushing the SEL button The icons of the permanently displayed controller mode are described in the following table Table 13 Icons Freeze Protection Alarm and Freeze protection icon in Operation addition Low battery uaa Battery icon Optimum Start Sun icon is flashing 1Hz On controllers with real time clock only Status information is displayed together with actual icon for the controller mode In order to improve battery lifetime low battery detection is performed only once a day and after power up If a displayed date is programmed to be a holiday the corresponding holiday icon is display
7. J fz ai A C AND EU C LIMITATION OR CASCADE TEMPERATURE SENSOR T2 IS DEFECTIVE MOI SPACE AND FII MAIN TEMPERATURE SENSOR T1 IS DEFECTIVE AND F 5 COMPENSATION TEMPERATURE SENSOR T3 IS DEFECTIVE AND F JH ERROR OF HUMIDITY DEVIATION INPUT Xwrh TEMPERATURE DISPLAY IN C HUMIDITY DEVIATION DISPLAY IN rh Fig 17 Error handling PUSH PUSH UNTIL SIMULTANEOUSLY NEEDED poo FOR APPROX VALUE IS E 2 SEC DISPLAYED PARAMETER m ADJUSTMEN a MODE e n PARAMETER SELECTION SET MODE PARAMETER 2 SELECTION J MODE SEL THIS EXAMPLE DESCRIBES THE ADJUSTMENT OF THE COMPENSATION CHANGEOVER POINT Weomp P03 Fig 18 Adjustment example R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK NOTES WITH RTC ONLY day Jan Feb March Apri May June July August Sept Oct Nov Dec if the 29 of February is programmed to be a H1 or H2 holiday and the current year is not a leap year this holiday will be deleted on March 1 Table 16 Annual schedule 19 EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Weekday or holiday type Programmed controller mode schedule mode Table 17 Weekly schedule and holiday types Honeywell Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies S rl Ecublens Route du Bois 37 Switzerland by its Authorized Representative Automation and
8. REAL TIME CLOCK CONFIGURATION SETTINGS The controllers R7426A B are supplied with unconfigured outputs to avoid damage of installed final control devices by supply of not applicable output signals if the controller power supply is turned on All configuration parameters must be set to select the correct control functions as required for the job application and to start control operation and synchronization of the final control devices Direct Reverse Action Dir Revx x Y1 Y2 or Y3 C 01 C 03 The output action of the analog outputs on the R7426C controller must sometimes be reversed for a correct opening and closed direction of the valve or damper This depends on whether the output controls a 2 way or 3 way valve or on the direction the damper shaft moves to open the damper cw or ccw It is needed only if the actuator does not provide a direction selector switch plug or similar In the case of the R7426A B controllers the direction can be changed by exchanging the wiring connections open close OUT2 OUT 1 Operating Range Selection Ctrityp C 04 The controllers provide two operating ranges which can be selected by the configuration parameter Ctrityp Lo 0 50 C Hi1 Hi2 0 130 C Depending on this parameter setting the setpoint ranges for the main temperature W1 limit temperature Wim and submaster temperature W are selected for air tem perature applications Ctrltyp Lo or for flow water tempe
9. REAL TIME CLOCK Output Signal Mode YMode C 11 Sequence Operation The controllers R7426B C are supplied from the factory configured for sequence operation of heating mixed air and cooling control The sequence operation can be configured for the following control applications by the control parameters YMode and Y1CTRF see Table 8 Sequence control will be activated if at least one control parameter YxMode is not equal 4 R7426B only Table 8 Sequence Operation Selection YICTRF for cooling with three outputs Y1 Y2 Y3 for heating with three outputs Y1 Y2 Y3 with two outputs Y1 Y3 for heating and one output for cooling Y2 with one output Y2 for heating and two outputs for cooling Y1 Y3 _ Y1 Y3 damper cooling and heating Y1 Y2 and Y3 energy recovery cooling and orn e a heating Multistage ON OFF Function In the case of the three floating output controller R7426B several ON OFF sequence control functions can be selected by the configuration parameter YMode see Table 9 Table 9 Multistage Selection pile function output function YMode YxMode of Y2 ae 6 stage ON OFF x 1 2 v1 2 whia z E sequence control sa 3 4 stage ON OFF sequence control heating 4 stage ON OFF 4 x 1 and 3 4 x 1 sequence control cooling 15 stage binary coded ON OFF avers control two position position Y2 eng camper control Y3 individual cooling and heating In the case
10. Sees P 10 Xpo Cooling throttling range for sequence control 1 40 alate P 11 Xph Heating throttling range for sequence control 40 L pae permenon S orf i pep ce EC P 14 MINPOS Minimal pos for air damper actuators Minimal pos Minimal pos for air damper actuators air damper actuators See ae ee eee Pae 80FFS _ ofsetofmainsetpontinSanby moze o 10 2 oa K x PAT rical _ Calbratoncfiemperetresensort 20 vo o oa K x P A8 T2cat _ Caltraton oftenperauresonsort2 20 20 0 on x x P49 T3Ca __ Calbratoncfiemperetre sensor ts 20 ao o o1 K x P20 Retos Retur a oftetto simulate exhaustar cond OFF O ore o1 x P21 Runtimeyt actuator rn tme rvi e frof so 1 see e P22 Runtimeys actuator ontmoe rvs 6 frof so see P23 Runtmev2 acuator ron tme ryz 6 eof eo 1 we P 24 Nghttow Night ow init against temperature eremes OFF8 19 fore 1 x P 25 Nghthigh Night ian imit agent omperatvreentomes 10FF21 20 ore 1 e Tele P26 NOFFS fotte ot main sepontinNartmoae o oo 8 or hiie 1 2 xx xx xx xx xx aa x x x x x for tr gt 2 min gt resolution 0 5 min for tr lt 2 min gt resolution 10 sec on Controllers with Real Time Clock only For detailed information of control parameters see chapter Parameter Settings and Adjustment Table 5 Control parameters R7426A B C 5 EN1B 0203GE51 R0507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT
11. parameter or configuration no and to enter the ad justment mode Fig 10 which is used to adjust configuration parameter values After adjustment the controller returns to selection mode by pushing the SET or SEL button Pushing the SEL button leads back to standard display mode POWER UP F N 7 7d FAIL AUTOMATIC __ VERSION DISPLAY p C H J L LA FOR APPROX AND SET Sa SEL ee OUTPUT STANDARD PARAM CONFIG PARAM CONFIG SELECTION DISPLAY SELECTION ADJUSTMENT MODE MODE MODE MODE SET OUTPUT ADJUSTMENT MODE SET OUTPUT FIXING NO PARAMETER NO OUTPUT FIXING Ar En WW ReLEasEoF FOR APPROX Gs OUTPUT FIXING 1SEC CLOCK CONTROLLERS WITH SCHEDULE REAL TIME SELECTION CLOCKS ONLY Fig 7 Operating overview EN1B 0203GE51 RO507C 12 R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Time Out After approximately 10 min of inactivity no button has been pressed time out each mode returns automatically to standard display mode Inputs that have not been confirmed siz gt 7N TIME amp J 4 in WEEKDAY ON CONTROLLERS WITH REAL TIME CLOCK ONLY z MAIN E J5 TEMPERATURE T1 MAIN SETPOINT CTRP1 SEL LIMITATION CASCADE TEMPERATURE T2 m SE THE OUTPUT DATAS Y1 Y2 AND Y3 ARE DISPLAYED BETWEEN THE FOLLOWING RANGES OUTPUT TYPE CONTROL RANGE OUTPUT RANGE FLOATING 0 100 0 100 0 10VDC
12. t i tr Fig 4 Step change response of P l control In the case of combined action including proportional and integral components P I control the reset time tr is defined as the required time after which the integral part is equal to the change due to the proportional action for a predetermined step change in the input variable See Fig 4 The control parameter tr1 sets the reset time of the P l main temperature control loop For limit or submaster cascade control the control parameter tr2 sets the reset time of these control loops e g discharge temperature T2 see Table 11 If only proportional control is required parameter tr must be set to OFF EN1B 0203GE51 R0507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Setting Guidelines for Reset Time of P Control The reset time tr should be adjusted to 2 3 times of the response time T which is the time interval between the beginning of a sustained disturbance e g rapid step change of valve position and the instant when the resulting change in the output signal reaches a specified fraction of its final steady state value either before overshoot or in the absence of overshoot The response time T in discharge air control is normally in the range of 0 1 to 0 6 min which allows adjustments of the reset time tr in a range of 0 2 to 2 min In room control the response time T is in the range of 0 5 to 5 min which results in a setting of 1 t
13. C 19 PSTG_C ee the prestart gradient to reach the comfort setpoint for cooling 0 K min vu 0 disabled Max 2 C 20 tvd Determines the damper prestart time before scheduled comfort mode 15 min Min 0 normal control Max 90 C 21 Adapt Optimum Start Self Adaption speed 50 Min Max C 22 Adr Sets the serial communication address used for service or maintenance 254 Min Max C 23 DefProg Initiates the default programming No Default programming Initiates Default programming actual value will not be changed during reset to default parameter on Controllers with Real Time Clock only 9 can be overwritten by controller for self adaption purposes resolution 0 01 K min For detailed information of configuration parameters see chapter Configuration Settings Table 4 Configuration parameters R7426A B C part 2 EN1B 0203GE51 RO507C 4 R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK control par Of setting setting Il R7426 actual description l no name high def ANB KCI Y SSS J re ele le aa foa setpoint low or high for input T2 re EEEIC00 P 03 Wcomp Compensation changeover point for input T3 40 faze ae ae x x pA P 04 wi ____ Winter compensation authority E ACER Tete P 05 Su ____ Summer compensation authority t00 oo o 4 e P 06 Weas___ Submaster or cascade setpoint oFF o 50 20 os ec x x x oe re ee Throttling range main control loop for T1 40
14. Control Solutions Honeywell GmbH B blinger Stra e 17 D 71101 Sch naich Phone 49 7031 63701 Fax 49 7031 637493 http europe hbc honeywell com Subject to change without notice Printed in Germany Manufacturing location certified to ISO 9001 EN1B 0203GE51 R0507C
15. MicroniK 200 Honeywell I Fig 1 Temperature Controller Contents En e E E E 1 Before Installation Note ccccccseeceesseeeeeeeeeeeseeeeeeeeeeeeens 1 PVOUEUING MEM EEE EET EE EE E TE TE 1 WV IG EE bessnanceodceantdudndannesiadededwieesesardanesvivdendes 2 Power Supply and Grounding cccccseeeeeeseeeeeeeeeeeeeaeeees 2 Configuration and Control Parameters cccccceeeeeeeees 3 Configuration Settings cccceccecsseeeeeeseeeeeeeeeeeeeeeeeeseeeeeeas 6 Parameter Settings and Adjustment cccccesseeeeeeeeeees 8 Operating OVErVICW ccccceseececeeececcesseeseeseesseesesseneeeees 11 Notes with RTC Only ccccccceeeeeesseeeeeeeeeeeseeeeeeaeeeeesaees 19 Copyright 2007 Honeywell GmbH e All Rights Reserved C Honeywell R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK INSTALLATION amp START UP INSTRUCTIONS GENERAL This document provides instructions and procedures for installing and starting up the Micronik 200 R7426A B C controllers No special tools are required for mounting and installation The user interface and liquid crystal display allow accurate and easy parameter setting and output adjustment eee INSTALLATION NOTE Visually inspect equipment for shipping damage Report any damage to the appropriate Honeywell representative e Refer to job drawings for specific installation information and mounting location e
16. S WHICH ARE NOT AVAILABLE ON THE GIVEN CONTROLLER VERSION ARE SKIPPED Fig 9 Parameter Configuration Selection Mode TO ADJUST PARAMETER VALUE Fig 10 Parameter Configuration Adjustment Mode Selecting Output Values The output selection mode is used to select the output no see Fig 11 for manual override adjustment An activated manual override is indicated by a displayed F fixed Pushing the or button scrolls through the output list Pushing the SET button enters the adjustment mode Manually Overriding Output Values The output adjustment mode is used for manual override adjustment of output values see Fig 12 In this mode the selected output no is displayed and the actual output value flashes Pushing the or button increments or decrements the value of the selected output for manual override purpose The output range is displayed in correspondence with the nominal control range To return to output selection mode three options are available e Pushing the SET button after adjustment activates the manual override fixing of output value e Pushing the SEL button causes that the output value is still determined by the control loop no fixing R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK e To release the manual override fixed of the output select the output enter output adjustment mode and push the and button simultaneously Pushing the SEL button leads b
17. TER VALUE CONFIRMATION EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Changing Operating Modes Fig 7 shows the six operating modes After power up the Pushing the SET and SEL button simultaneously for approx controller version is displayed and the controller enters the 1 sec causes the controller to leave the standard display standard display mode In this mode selected input or output mode and to enter the output data selection mode Fig 11 values and on controllers with real time clock the time or the Pushing the SET button causes the controller to accept the date are displayed The controller mode is permanently selected output data no and to enter the output adjustment displayed by a corresponding icon Fig 6 mode Fig 12 This mode is used for manual override of Pushing the and button simultaneously for approximately output values The return to standard display mode is shown 1 sec causes the controller to leave the standard display in Fig 7 mode and to enter the parameter configuration selection Pushing the SET and button simultaneously for approx mode Fig 9 This mode is used for application configuration 1 sec causes the controller to leave the standard display and to select parameters for adjustment mode and to enter the clock schedule selection mode Fig Pushing the SET button causes the controller to accept the 13 on controllers with real time clock only selected
18. THOUT REAL TIME CLOCK limit or cascade sensor T2 to operate the output device from full open 100 to full closed 0 or vice versa Xp1 is the throttling range for the main control loop Xp2 is used if limitation or cascade control submaster control loop is active see Table 11 Table 11 Throttling range and reset time reference application _ sens Xp1 Xp2 Xpe Xph tr1 tr2 R7426A Controller Main Temp Control High or Low Limit Temperature Control Cascade Control Master Submaster R7426B C Controller Main Temp Seq Control Mixed Air Damper Energy Recovery x X XxX X R7426B C Controller Temperature Cascade Sequence Control Master Submaster Mixed Air Dampers Energy Recovery Heating Cooling Throttling Range Xpc Xph P 10 P11 The control parameters Xpc and Xph are only available on R7426B C controllers and are used to set the cooling and heating throttling ranges for the following applications e Temperature sequence control with heating mixed air dampers and cooling see Fig 3 and Table 11 e Temperature cascade control with heating mixed air dampers and cooling see Table 11 In applications without cooling the throttling range Xpc must be set to OFF 100 fresh air supply at actual temperature above the control point is required outdoor and return air dampers fully open Y 4 100 MINPOS if Xpc Off 0 gt CTRPH CTRP1 cTRPC
19. Verify the controllers will be adequately separated from the main power supply relays or other equip ment which can possibly generate electromagnetic interference e Verify that the ambient temperature and the humidity at the controllers will not exceed 0 50 C 32 122 F and 5 to 95 rh e Use shielded wiring in areas with high EMI e All wiring should be separated from power lines by at least 150 mm 6 e Do not install controllers near frequency converters or other high frequency sources MOUNTING The controllers can be mounted in an electric cabinet or other suitable enclosure They are suitable for back panel DIN rail wall or front panel mounting The corresponding mounting sequence as well as dimensions and panel cut out are illustrated in the mounting instruction sheet EN1B 0202GE51 supplied with the controllers If the compensation sensor signal T3 is received from another controller parallel connection of compensation sensor inputs the jumper W303 has to be cut before mounting the controller see Fig 2 This disconnects the sensor from the internal power supply EN1B 0203GE51 R0507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK WIRING Screwless type spring loaded terminals are provided on the controllers for panel and field wiring These terminals are suitable for solid conductors as well as tinned or with multicore cable end stranded wires up to 1 5 mm To make a termi
20. Wh Xwe Xwd O m Xph gt a Xp1 gt a Xpc gt Fig 3 Temperature sequence control with heating mixed air dampers and cooling valve Setting Guidelines for Proportional Band of P and P I Control To estimate the proportional band throttling range X for stable control under all different load conditions the control or correcting range X of the heating or cooling coil must be known This is the maximum air temperature increase pro duced by the heating coil or decrease of a cooling coil if the control valve is fully open The proportional band X for discharge air control can be calculated by using the following rule of thumb formula Xh Xp aie For room temperature control the following rule of thumb formula can be used Xh Atmaxdischarge air Xp of 10 10 The Atmax Xn of the discharge air for mixed air damper con trol is the maximum difference between outdoor air OA temperature and return air RA temperature Xh Sra Foamin The often specified accuracy for room control of 1 X 2K allows a discharge air alteration of 20 C In P control the same proportional band can be used as for P control The following rule of thumb formulae are used for P I control e Discharge air control Xp e Roomcontrol Xp or Atmaxdischarge air 8 10 8 10 Reset Time tr1 tr2 P 12 P13 X W a P s
21. YP 4 l HCW 23 setpoint wheel 0 10ka CPA 5K printed with 5 K CPATYP5 SPA 0 100k 15 30 C 43193982 001 CPATYP6 SPA 0 50 C 0 130 C 43193982 001 0 100kQ CPATYP 2 100ka 0a CPA 5 K Output Control Range Selection YRange C 06 The configuration parameter YRange is available only on the R7426C controller and is required to select the output control range 0 100 to either 2 10 Vdc YRange 0 or 0 10 Vdc YRange 1 The selected control range is common to all outputs Enabling the Start up Routine C 07 A start up routine is provided to prevent start up problems for the R7426B C controllers three outputs This routine can be enabled by setting the configuration parameter Startup to ON Individual Output Function Selection YxMode x 1 2 or 3 C 08 0 10 The R7426A B controllers provide a choice of output signals suitable for operating a range of final control devices according to the configuration parameter Y1Mode for R7426A B and Y2Mode Y3Mode for R7426B only Each output can be configured individually by this con figuration parameter see Table 7 Table 7 Individual Output Function Selection YxMode output function x 1 2 or 3 Valve or damper actuators floating mode 2 stage ON OFF Sequence Control 3 stage Binary ON OFF Sequence Control Electric Heat Current Valve owm output unconfigured R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT
22. ack to standard display mode with fF MANUAL OVERRIDE IS ACTIVE R7426B AND without F R7426C ONLY CONTROL LOOP IS ACTIVE w7 sh v i Ing OUTPUT a SELECTION sJ Z cU OUTPUT y IZ p E St a OUTPUT TO ADJUST OUTPUT VALUE VALUE ADJUSTMENT AUTOMATIC DISPLAY im F i FOR APPROX 1 SEC SUA o p v _ INp OUTPUT He z C U SELECTION N RELEASE OF MANUAL OVERRIDE NO MANUAL OVERRIDE MANUAL OVERRIDE VALUE ADJUSTMENT Fig 12 Output value adjustment for manual override 15 EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Using the Schedules with RTC only Two schedules one for programming the schedule points and a normal day day type HO is default The function is one for holiday programming are available described as follows The standard schedule is used to switch the controller mode e HO no holiday the weekday schedule applies off night standby or comfort at programmed schedule e H1 free programmable as for a weekday but only valid for points S1 S6 which can be set for each weekday or the current day weekday group as well as for several holiday types H1 H2 e H2 as H1 function free programmable additional holiday and H3 type e g last or first day after a longer holiday period If the comfort or standby mode is taken from the schedule and NOTE After day is passed day type H1 or H2 is reset at if the oc
23. as for three holiday types The controller mode off night standby or comfort will be switched at these programmed schedule points The first step of the schedule programming see Fig 15 is to select a weekday or holiday type as follows Mo Su as single H1 H3 as single Mo Fr grouped Sa and Su grouped Mo Su grouped The switching time is adjustable in steps of 10 min To ignore a schedule point the displayed switching time must be set to by adjusting it between step 23 50 and 0 00 or by ie oe ea pushing the and button simultaneously Pushing the SEL button returns to the selection mode ignoring adjustments which have not been confirmed by the SET button TO SELECT WEEKDAY OR WEEK GROUPS B OR HOLIDAY TYPES TO ADJUST OR SCHEDULE POINT TO ADJUST OR SWITCHING B TIME TO ADJUST OR CONTROLLER MODE Fig 15 Standard schedule programming EN1B 0203GE51 R0507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Programming Holiday Schedule with RTC only The holiday schedule programming is used to program each day of the year 01 01 31 12 as a holiday day type H1 H2 or H3 or as a normal day day type HO is default Pushing the or button during the first step of the holiday programming see Fig 16 toggles between all programmed holidays HO and displays them type and date If none of the 365 days of a year is programmed to be a hol
24. ate winter and summer authority the throttling range must be considered in proportional only control according to Table 12 EN1B 0203GE51 RO507C 10 Table 12 Calculation of summer winter compensation outdoor air room temp temp we T3 Tcomp AT1 Xp Aut Wi _ 100 At Outside Air control schedule throttling range Xp 22 20 2 100 12 Solan pee 1 00 At Outside Air 26 20 2 15 Compensation change over at 20 C outdoor air temperature NOTE With P I control X 0 100 27 Occupied Unoccupied Function SOFFS P 16 A potential free contact can be used between terminals 1 and 4 to switch the controller between occupied contact closed or unoccupied contact open mode In occupied mode the temperature set point W1 is used for the control point calculation In unoccupied mode the SOFFS parameter value is added cooling to or subtracted heating from the calculated control point In the case of the R7426A controller the parameter Y1CTRF must be set to 0 or 1 Cho to match the required heating or cooling application If the configuration parameter Y1CTREF is set to 2 Summer winter changeover the parameter SOFFS is not considered In sequence applications of heating and cooling the SOFFS parameter value is added to the control point for cooling CTRPC and subtracted from the control point for heating CTRPH see Fig 5 Night Mode Offset NOFFS
25. cupancy switch is connected the controller mode is 24 00 to normal determined by the occupancy input as follows e H3 free programmable as for a weekday but is valid e Occupied contact closed every year and repeated annually Controller mode Comfort sun icon The schedule points of the used holiday types H1 H2 or H3 e Unoccupied contact open must be programmed in the standard schedule Table 15 Controller mode Standby halfsun icon shows a programmed example of the holiday schedule 2 7 The OFF and night controller modes are not influenced by the till 28 7 holiday type H1 and 1 5 holiday type H3 occupancy input The H1 and H2 holidays will not be influenced if the user Table 14 shows an example of the weekly schedule changes the actual date If power supply is interrupted for programmed with the following default values more than one day all H1 and H2 holidays within the date of e Mo Su from 6 00 till 18 00 Comfort mode power supply error and the actual date will be deleted e Mo Su from 18 00 till 6 00 Night mode The holiday schedule is used to program each day of the year 01 01 31 12 as a holiday day type H1 H2 or H3 or as point 1 point 2 point 3 point 4 point 5 point 6 time SMode time SMode time SMode time SMode time SMode time SMode Mo 6 00 comfort ignore ignore ignore ignore 18 00 night _ Tu 6 00 comfort ignore ignore
26. ed on controllers with real time clock Selecting Parameters The parameter configuration selection mode is used to select control and configuration parameters Fig 9 for adjustment The displayed parameter no corresponds with the number in Table 4 and Table 5 Default programming is indicated by a display of def Pushing the or button scrolls through the parameter list Pushing the SET button enters the adjustment mode Adjusting Configuration Parameter Values The adjustment mode is used to adjust configuration and parameter values Fig 10 In this mode the selected para meter no is displayed and the corresponding value flashes Pushing the or button increments or decrements the value of the selected parameter Ranges are shown in Table 4 and Table 5 An adjustment example is shown in Fig 18 Pushing the SEL button retains the old parameter value Pushing the SET button accepts the parameter value and returns to parameter configuration selection mode Resetting Param Values to Default Values Pushing simultaneously the and button during the power up or setting the control parameter DefProg to 1 resets all control and configuration parameters to defaults see Table 4 and Table 5 Default programming is indicated by a display of def EN1B 0203GE51 RO507C FIRST DISPLAYED CONFIGURATION PARAMETER J For R7426c H FORR7426A B ACTUAL PARAMETER VALUE NOTE CONTROL OR CONFIGURATION PARAMETER
27. iday the actual date is displayed marked as normal day HO Pushing the SET button selects the displayed holiday and enters the adjustment for date and day type To program a new holiday select any holiday adjust date and holiday type if necessary and confirm the changes by pushing the SET button To reset a holiday to normal day day type HO has to be set for the specific day Pushing the SEL button returns to the selection mode ignoring adjustments which have not been confirmed by the SET button 1 a TOGGLE DISPLAY PROGRAMMED B HOLIDAY TO ADJUST C MONTH TO ADJUST C DAY TO ADJUST OR DAY TYPE H0 5 H1 H2 OR H3 Fig 16 Holiday schedule programming EN1B 0203GE51 R0507C 18 Interpreting Error Messages Different analog input errors can be identified by the controller Error handling The defective analog input T1 T2 T3 or Xwrh will be displayed in the standard display mode see Fig 17 after the corresponding value is selected NOTE For the external CPA SPA potentiometer input no error message Is indicated if the potentiometer or wiring is defective In this case for control point or setpoint calculation the following values are used e for CPATYP 0 1 or 2 CPA value 0 e for CPATYP 3 SPA value control parameter W1 DISPLAY SHOWN IF NO SENSOR IS CONNECTED DURING POWER UP DISPLAY SHOWN AFTER ERROR IDENTIFICATION DURING OPERATION STANDARD DISPLAY STANDARD DISPLAY KOI V
28. mper switches to normal operation to supply fresh air to the space in mixed air applications Serial Communication Address Adr C 22 The configuration parameter Adr sets the serial communication address The serial communication bus allows the connection of the PC based Operator s Terminal to one or several controllers It provides access to all application configuration and control parameters time schedules input and output values of the connected controllers and easy setting of these via the bus by mouse click or keyboard EN1B 0203GE51 RO507C Default Programming DefProg C 23 Setting the control parameter DefProg to 1 resets all control and configuration parameters to defaults see Table 4 and Table 5 Default programming is indicated by a display of def After default programming the parameter DefProg is reset to 0 PARAMETER SETTINGS AND ADJUSTMENT Main Setpoint W1 P 01 The main setpoint is either set by the control parameter W1 or by the external setpoint potentiometer if the configuration parameter CPATYP 3 5or6 High Low Limit Setpoint Wim P 02 For high or low limit control the control parameter Wiim is used as setpoint During limit control the throttling range Xp2 and reset time tr2 are active Limit control will be active only if the T2 temperature signal control parameter T2ext 0 is available or alternatively the sensor T1 control parameter T2ext 1 is used also for limit control
29. nation push the wire into the terminal or insert a small screwdriver from the front of the controller into the spring release hole and insert the wire Check for proper connection by short pull on the wire W303 WVU UU HU UU Table 1 Terminal Connection controller to CPA SPA potentiometer T7412B1057 1008 T7412B1024 RIC ASIEHE UAE UNE T7412C1030 1006 T7412B1040 Fig 2 Parallel Connection of Compensation Sensor T3 Table 3 Jumper States state _ description T3 supplied by this controller temina 2 terminal terminal 4 terminals i Table 2 Wire Dimensions type of length max wires 1 0mm 1 5 mm from controller to all cal input and output 100 m 150 m i standard devices POWER SUPPLY AND GROUNDING 1 Refer to job drawings and verify correct supply voltage to transformer 230 Vac and controller 24 Vac 2 Connect line power conductors to transformer primary Line power must be supplied from a breaker panel with dedicated controller circuit Do not turn the line power on until all wiring has been checked against job drawings EN1B 0203GE51 RO507C T3 supplied from another open controller open Default jumper position closed Cut open jumper W303 only if the T3 input is fed from another controller parallel connection max six devices This disconnects the T3 input from the internal power supply Wiring should be done only according to the ac
30. o 15 min Start Point Ystart P 15 This control parameter is available only on the single output controller R7426A and on the R7426B controller if the three 3 position floating outputs are configured for 6 stage ON OFF sequence control and on the R7426B C controllers if YMode 1 is selected The start point determines the midrange shift of the output Y1 from the calculated control point The start point is calibrated in degrees K and is the offset plus or minus from the set values or calculated control points at which the output Y1 is at 50 Normally and especially in P l control the start point should be set at zero A change is required only in specific applications where a asymmetrical arrangement results in improved control per formance e g if for heat up of a large space in the morning a high heat capacity is needed and for normal control the valve must be opened by only a small amount Compensation Changeover Point Weomp P 03 The control parameter Wcomp defines the start point of summer or winter compensation Above the compensation changeover point Wcomp Summer compensation and below Weomp Winter compensation is performed Summer Winter Compensation Authority Su Wi P 04 P 05 These authority settings determine the reset effect OAT comp the compensation sensor T3 has on the main setpoint W1 in percentages Outside temperature reset in summer and winter time are commonly used applications To calcul
31. of the R7426B C controller the output Y1 can be configured for two position damper control by setting the configuration parameter YMode to 4 Supply of Temperature Signal T2 T2ext C 12 If sensor T1 is used also for high or low limit control the con figuration parameter T2ext must be set to 1 This inter connects the T1 and T2 input internally and the sensor has to be connected only to the T1 input By using a limit temperate sensor T2 the parameter T2ext has to be set to O default Limit Type LimTyp C 13 The configuration parameter LimTyp allows the selection of high or low limit control High limit control is performed if configuration parameter LimTyp 1 low limit control is performed if configuration parameter LimTyp 0 Sensor Type Senstyp C 14 Three different sensor types can be used with the controller see Table 10 Table 10 Sensor Types automatic ID temperature ee characteristics of sensor type range Pt 1000 30 130 C 10000 at 0 C BALCO 500 30 130 C 5009 at 23 3 C 30 85 C f NTC 20kQ AR 130 C 20k at 26C 1 NTC sensor is detected automatically if during power up the sensor temperature is within 30 85 C and the configuration parameter Senstyp 0 NTC sensor is selected manually if the configuration parameter Senstyp is set to 1 Automatic identification of sensor type is selected if the configuration parameter Senstyp 0 default After power up
32. on R7426B C controllers and is used to activate economizer mode RetOffs OFF for mixed air damper Y1CTRF 0 or energy recovery system control Y1CTRF 1 If the main temperature sensor T1 is installed in the exhaust air the control parameter RetOffs should be set to 0 In applications with the main sensor installed in the room and with a constant offset between room and exhaust air conditions this offset value can be adjusted within 0 5 K by the control parameter RetOffs This will be added to the actual measured room temperature value to simulate exhaust air conditions The economizer mode is disabled if the value of the control parameter RetOffs is programmed to OFF or if no outdoor air temperature sensor is connected Minimum Position MINPOS P 14 The control parameter adjustment MINPOS is available on R7426B C controllers only and determines the minimum open position to which an outdoor air damper actuator can be driven from the controller In mixed air damper applications it maintains the minimum outdoor air damper setting even though the temperature input condition calls for a fully closed position 11 If the controller is in OFF mode the time schedule program overrides the minimum position by the ON OFF input for plant system shut off and the damper is driven into the fully closed position at OFF condition together with the heating and cooling valve actuators Runtimex x Y1 Y2 or Y3 P 21 P 23 The c
33. ontrol for heating Y1 Y3 and cooling Y2 2 le 4 stage ON OFF for heating Y1 Y3 and cooling Y2 i control for cooling Y1 Y3 and heating Y2 ie 4 stage ON OFF for cooling Y1 Y3 and heating Y2 4 Two position damper control Y1 heating Y3 and cooling Y2 5 15 stage binary coded ON OFF for heating Y1 Y3 and cooling Y2 Table 4 Configuration parameters R7426A B C x XxX X x XK KK KK KK X 3 EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK config par default description setting I I C 12 T2ext Enable Disables the T1 sensor input to be used for both T1 and T2 inputs T2 installed T1 signal used for T2 C 13 LimTyp Limitation type determines whether the limit function is low or high 0 1 Low limit High limit C 14 Senstyp Sensor type determines automatic detection or manual selection of NTC sensors Auto detection NTC sensor type Controls the action of Y1 or activates the occupancy input for summer winter changeover R7426A R7426B C cooling mixed air damper heating energy recovery a changeover C 16 AddHour a the month for winter summer time change 3 Min oe winter summer time change March Max C 17 SubHour ss the month for summer winter time change Min 0 disables summer winter time change fan Max 12 C 18 PSTG_ H es the prestart gradient to reach the comfort setpoint for heating 0 K min a a Max C 15 Y1CTRF
34. ontrol parameters Runtimex x Y1 for R7426A x Y1 Y2 or Y3 for R7426B are available only on R7426A B controllers The controller converts the deviation signal to a proportional output pulse which drives the actuators depending on the Runtimex parameter value An automatic synchronization function ensures correct positioning of the actuators The run time for synchronization is derived by control parameter Runtimex multiplied by 1 25 By selection of the output to pwm mode the pulse width modulated output is suitable for driving electric heat current valves and is controlled from the heating signal The total cycle time is set by the control parameter Runtimex OPERATING OVERVIEW Display and Operation Elements The MicroniK 200 user interface is described in Fig 6 NOTE Pushing the or button increments decrements values or scrolls through the parameter list e pushing one time single step e pushing without release automatically inc dec or scroll e after 3 sec pushing without release fast automatically increment decrement or scroll DISPLAY FREEZE PROTECTION CONTROLLER MODE NIGHT STANDBY COMFORT TIME Date Of C x x C rh minsec K OFF LOW BATTERY ENGINEERING UNITS MoTuWeThFr SaSu H1H2 H3 y WEEKDAYS GROUPS HOLIDAY SCHEDULE TYPES ON CONTROLLERS WITH REAL TIME CLOCKS ONLY PUSH BUTTONS SELECTION OR ESCAPE Fig 6 User interface ADJUSTMENT OR SELECTION PARAME
35. rature applications Ctrityp Hi1 Hi2 If the configuration parameter Ctrityp Hi1 normal operation for flow water application will be performed If Ctrityp Hi2 the following additional function will be active on controllers with real time clock The controller switches the ON OFF output e g the pump from ON to OFF if the outside air temperature is above 8 C and the output signal Y1 0 for more than 5 minutes during the controller is in the Comfort Standby or Night mode Changing the configuration parameter Ctrlityp value from Hi to Lo control range or vice versa causes the controller to change all parameter values to default depending on the selected Ctrltyp value For a direct parameter reset by the user refer to chapter How to reset Parameter Values to Default Values on page 12 Control Point Setpoint Adjustment CPATYP C 05 The control point or setpoint can be adjusted via the internal or external potentiometer connected to the CPA SPA input The potentiometer type is selected by the configuration parameter CPATYP see Table 6 EN1B 0203GE51 RO507C Table 6 Selection of CPA SPA Type range remote setpoint unit type CPATYP 0 CPA 45K CPATYP 1 953 10530 CPA 5K T7412B1016 Pt 1000 T7412B1057 Pt 1000 T7412C1030 Pt 1000 T7412B1008 NTC 20kQ T7412C1006 NTC 20kQ 43193982 001 CPATYP 3 SPA T7412B1024 BALCO 500 10 20kQ 15 30 C T7412B1040 Pt 1000 CPAT
36. reset the controller detects automatically the type of sensor connected to the main temperature input T1 For correct auto detection it is necessary that the measured temperature be in the specified range see Table 10 The same type of sensor must be used for all temperature inputs T1 T2 and T3 Output Control Function Y1CTRE C 15 The R7426A controller performs cooling control if the configuration parameter Y1CTRF is set to 0 A rise in the measured variable will increase the output value direct acting The control action must be reversed for heating control by setting the control parameter Y1CTRF to 1 Arise in the measured variable will decrease the output value If the configuration parameter is set to 2 the R7426A controller provides summer winter changeover control by a potential free contact connected to the occupancy input terminals 1 and 4 In the case of the R7426B C controller the configuration parameter Y1CTRF has to be set to 0 default to perform mixed air damper control and to 1 for energy recovery systems EN1B 0203GE51 RO507C R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK Summer Winter Time Change AddHour SubHour C 16 C 17 These configuration parameters are only available on controllers with RTC The configuration parameter AddHour or SubHour are required to adjust the month for summer winter time change or vice versa The actual clock is incremented by one hour at 2 00 on
37. the last sunday of the month for winter summer time change AddHour The actual clock is decremented by one hour at 2 00 on the last sunday of the month for summer winter time change SubHour Prestart Gradients PSTG_H PSTG C C 18 C 19 The configuration parameter PSTG_H or PSTG _C are necessary for the optimum start program on controllers with RTC For heating and cooling applications these parameters determine the prestart gradient to reach the comfort setpoint at occupancy start If the comfort setpoint will be reached earlier or later than expected the controller corrects the prestart gradient by self adaption routine to optimize the start cycle The optimum start cycle for heating or cooling can be disabled by setting PSTG_H or PSTG Cto 0 Optimum Start Self Adaption Speed Adapt C 21 Controller with RTC only This parameter is used by the self adaption routine to optimize the energy consumption during the start cycle For this optimization a corrected prestart gradient is calculated once per day The adaption to the actual prestart gradient for the next optimum start cycle is determined by the self adaption speed Adapt 0 adaption disabled and 100 max adaption speed Damper Prestart Time tvd C 20 Controller with RTC only The damper prestart time tvd is active with the optimum start program only and is used to set the time before occupancy start scheduled comfort mode at which the output signal Y1 da
38. tual job wiring diagrams or wiring diagrams shown in the mounting instruction sheet EN1B 0202GE51 The wiring to the CPA SPA potentiometers is described in Table 1 All wiring must conform to applicable codes ordinances and regulations The maximum allowed wiring length per wire size are shown in Table 2 Connect transformers 24 Vac secondary to the controller terminals 18 and 19 Connect one conductor to terminal marked 24 V and the other to terminal marked 24 VL If controllers are interconnected all terminals 19 must be connected to the same potential 24 VL level Do not connect the secondary side of the transformer to the installation ground R7426A B C TEMPERATURE CONTROLLER WITH AND WITHOUT REAL TIME CLOCK CONFIGURATION AND CONTROL PARAMETERS The controllers R7426A B C include two groups of settings I and Il for control and configuration parameters that are automatically selected during programming For parameter Ctrityp Lo setting is selected and for parameter Ctrityp Hi1 Hi2 setting II is selected config par yes default R7426 actual description no name setting A BI C value C 01 DIR REVY1 Selects the output action of Y1 to adapt the valve or damper direction Dir xX Selects the output action of Y3 to adapt the valve or damper direction Dir X xX C 02 DIR REVY3 C 03 DIR REVY2 Selects the output action of Y2 to adapt the valve or damper direction Dir Dir Direct acting output signal
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