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Installation and user`s manual TAC4 DG + Modbus RTU

1. 10 3 4 Opening closing of dampers CT option at 10 3 5 Heat exchanger antifrost protection 11 3 5 1 Protection antifreeze via pulse flow reCUCTION ccccccceeeeceeeeeeeeceeeeeeeeseeeeseeeseeeesaeesaeeeaeeeseeesaeeenes 11 3 5 2 Antifrosting the heat exchanger with 1 pre heating KWin option nnn ann neen enene enen enenen 11 3 6 KWout post heating electrical coil control option aaneen enen eneneneenenenen venen enerrenenvnnsennennnnn 12 3 6 1 MME diagr aS seams sene mee meneren ennen tacoma E O ANE OES EN EE 13 3 7 Post heating NV option reQulation ccccccceccceeeeceeeeeeeeseeeeeeeeseeeeeeeseeeeseeeseeesaeeeeeeeseeeseeeseeeeeeesaees 13 3 7 1 Wining EEEO 14 3 8 Regulation for external coil s SAT TAC4 BA KW option aaan nen 15 3 9 eiste glee ELEN 15 Ol
2. 23 re ee ere ee eee 23 ae eee senaten tendensen ene dende eenen eneen 24 6 3 CL EN 24 6 4 Viewing temperatures 24 6 5 AE E E 25 6 6 PGS 25 6 7 BS areca sateen eee EN 26 6 8 BOOSE 26 6 9 Post heating internal coil NV or KWout option naan onee enenenneneneneenenenenenennerenenennenenen 26 6 10 Post heating or cooling external coil SAT BA KW OPTION annen eenen eneneenenenennenenen 27 6 11 Run time and maintenance alarms 27 gt 6 12 Operating with time tables cccccccceecccseeeccseeeceeeeeeececseeeceuceeseueeceueeesaueessaeeeseeessueeeseeeessaeesseneegaes 27 P 619 SedsonalPOALAMMING enre earar a n a a r A ia a a 28 m Gerd 0161219 E E E eee 28 Q 7 USE of RC TACA remote COMMON otessteerereverddan a E EE nende eenaenen 29 7 7 1 Connecting the RC TAC4 to the CB4 TAC4 DG 29 a 7 1 1 Op
3. eenden eneen deden eeen dennen 16 16 2102 Aldim ON esac E E E E EEE 18 Oe NT E dte eenete 19 3 11 Plugging the SAT MODBUS satellite nan en ensen eenenennnen eenen ennen eeneneenneneeneneennen 19 3 12 Wing ihe SAIT MODBUS penn Om 20 4 Definition of the MODBUS RTU COMMUNICATION ese nane ennen enanennenennenennnnrnenanennnnrnnnenen 20 4 1 MODBUS PITO O nonnen enden 20 4 2 OIB se oe oe gears ootneedinnndeeideweaseneeras 21 4 3 MODBUS EX ENUO g ee eer eee eee 21 4 4 MODBUS VUC aa htt tend denten eenander elena Se presente cee 21 4 5 Wite Cycles IMAO noemers nme ennn bennet REEE dba neten RR 22 5 Modbus map OVERVIEW assess 22 6 USE OF MODBUS Comings desee zeiken nnn 22 6 1 MODBUS er ec an eee ee 22 6 2 Fans WORKING OCS nn 23 6 2 1 CA MODE airflows are continuously being 5 5 23 6 2 2 CA Mode 3 airflow rates
4. Parity Factory default parity is None CRC 16 The RTU format follows the commands data with a cyclic redundancy check checksum as an error dectection mechanism to ensure the reliability of data In the Modbus org standard documents holding register addresses are given a prefix of 4 to distinguish them from other register types For example in their documentation a holding register at address 1001 is referred to by 41001 However the leading 4 is not really part of the address Also the Modbus org standard documents refer to register addresses using one based numbering However the addresses that are actually sent in a Modbus command message are zero based For example to read register 1001 the address that is actually sent in the command message is 1000 4 3 MODBUS exception The TAC4 modbus protocol may respond with an exception code if the read or write command was invalid Possible exceptions are e 01 ILLEGAL FUNCTION The function code received in the query is not an allowable action for the slave e 02 ILLEGAL DATA ADDRESS The data address received in the query is not an allowable address for the slave Or the combination of data address and transfer length is not allowable e 03 ILLEGAL DATA VALUE The master attempted to write a non allowed value into a register Which values are allowed may depend on configuration settings of other registers When a write of multiple registers is executed the execution stops at
5. It is possible to connect an RC TAC4 remote control while communicating via MODBUS The RC could be used in two manners RC is master the RC ensures the configuration the control of the flows and visualization MODBUS is master the RC only ensures displays the parameters It will be used mainly for display of information It is however possible to take control of the system with the RC TAC4 configuration and control via entry IN5 7 1 Connecting the RC TAC4 to the CB4 TAC4 DG circuit The connection between the various circuits is made by a communication bus Follow these steps to connect the RC TAC4 to the CB4 TAC4 DG TAA Open the RC TAC4 casing Using a small screwdriver unlock the 4 pins 2 pins on each side Remove the cover Points for fixation of the casing spacing 88mm RC dimensions 122 x 66mm RC TAC4 wiring terminals Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL ZAUERHAAN KLIMAATTECHNIEK Caution e The RC box is class IP20 and cannot be installed outdoors as such If you wish to install it outdoors for instance on the HRg unit you need to fasten inside a proper watertight box e The configuration data is stored in the TAC4 DG circuit Therefore unlike the previous generation the RC does not have to be permanently connected for the regulation to operate properly 7 1 2 Wiring diagram to connect the RC TAC4 REC to the TAC4 DG circuit TAC
6. See 6 in table below 40303 register bit 7 8 The TAC4 DG control can be connected to an extern fire detection system to stop start the supply exhaust fans according to fire regulations set the airflows in case of fire alarms according to fire regulations allow firemen to overrule the existing setup and start stop the fans as needed After a fire alarm it is necessary to perform a RESET via the 40250 register or via the RESET button on the TAC4 DG circuit to return to normal operation The fire alarm and of start stopping of the fans supply exhaust can be activated by external contacts see wiring diagram below or through MODBUS communication registers 40222 40226 and 40227 www AUERHAAN KLIMAATTECHNIEK NL TZ AUERHAAN KLIMAATTECHNIEK Wiring diagram INI IN2 IN3 IN4 INS IN6 IN INS INS 12V IN3 12V fire alarm contact The contact can be normally open factory set or normally closed change setting via register 40510 If alarm activated via INS e 7 12 closed force start the supply fan s at pre programmed airflow e INZ 12V open force stop the supply fan s IN8 12V closed force start the exhaust fan s at pre programmed airflow e IN8 12V open force stop the exhaust fan s Registers 40222 40226 and 40227 can be used instead of INS IN7 et IN8 Type 7 Alarm indicating maintenance is expected for configuration see advanced setup MAINTEN
7. ALARM END OF FIRE ALARM Bit 9 ALARM VLOWERVLOW Bit 10 ALARM VHIGERVHIGH Bit 11 ALARM PREHEAT REDUCED Bit 12 ALARM PREHEAT STOP Bit 13 ALARM AF _ REDUCGED Bit 14 ALARM AF _ STOP Bit 15 ALARM POSTHEAT SETPOINT 40304 R E1 Bit 0 ALARM_POSTCOOLING_SETPOINT Supply T too high 0 65535 Bit 1 ALARM SAT BA MODULE SAT BA module is configured but does not respond 9 5 SETUP parameters Description Accepted T values 40400 R W E1 Current time seconds 0 59 Do not write the time register cyclically doing so will slow the clock counter 40401 R W E1 Current time minutes 0 59 Do not write the time register cyclically doing so will slow the clock counter 40402 R W E1 Current time hours 0 23 Do not write the time register cyclically doing so will slow the clock counter 40403 R W E1 Current date day of month Sl Do not write the time register cyclically doing so will slow the clock counter 40404 R W E1 Current time month 1 12 1 January 12 December Do not write the time register cyclically doing so will slow the clock counter 40405 R W E1 Current time year 2000 2099 Do not write the time register cyclically doing so will slow the clock counter 40406 R E1 Current time Day of the week 0 6 O Monday 1 Tuesday 2 Wednesday 3 Thursday 4 Friday 5 Saturday 6 Sunday This register is read only The weekday is automatically calculated when the date changes Notes on the real time clock e T
8. OPEN Bit 13 ALARM SHORT Bit 14 ALARM T4 OPEN Bit 15 ALARM T4 SHORT 40301 R Ei Bito ALARM T5 OPEN 0 65535 Bit 1 ALARM 5 SHORT Bit 2 ALARM OPEN Bit 3 ALARM SHORT Bit 4 ALARM 7 OPEN Bit 5 ALARM 7 SHORT Bit 6 ALARM 8 OPEN Bit 7 ALARM 8 SHORT Bit 8 ALARM FAN 1 HIGH Bit 9 ALARM 1 LOW Bit 10 ALARM 3 HIGH Bit 11 ALARM 3 LOW Bit 12 ALARM_LS 1 LOW Bit 13 ALARM _LS 1 HIGH Bit 14 ALARM_LS FAN 2 LOW Bit 15 ALARM LS 2 HIGH 40302 R E1 Bit 0 ALARM LS 3 LOW 0 65535 Bit 1 ALARM_LS_FAN_3_HIGH Bit 2 ALARM LS FAN 4 LOW Bit 3 ALARM LS 4 HIGH Bit 4 ALARM CA FAN 1 LOW Bit 5 ALARM CA FAN 1 HIGH Bit 6 ALARM CA FAN 2 LOW Bit 7 ALARM CA FAN 2 HIGH Bit 8 ALARM CA FAN 3 LOW Bit 9 ALARM CA FAN 3 HIGH Bit 10 ALARM FAN 4 LOW Bit 11 ALARM CA FAN 4 HIGH Bit 12 ALARM PA INIT F1 STAB Bit 13 ALARM PA F3 NOT STAB Bit 14 ALARM PA TOO LOW Bit 15 ALARM PA INIT F3 TOO LOW Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Sy ZAUERHAAN KLIMAATTECHNIEK 40303 R E1 Bit 0 ALARM PA ACHIEVED 0 65535 Bit 1 ALARM PA F3 _ NOT ACHIEVED Bit 2 ALARM PA TOO HIGH Bit 3 ALARM PA INIT F3 TOO HIGH Bit 4 ALARM WARN Bit 5 ALARM MAINT FATAL Bit 6 ALARM DPA Bit 7 ALARM FIRE Bit 8
9. 0 99 9 0 is OFF Selection of the bypass status O Bypass auto based on measured and T 2 1 Bypass forced to close 2 Bypass forced to open 41xx7 Bypass mode 0 1or2 9 7 2 Time scheduler mapping Register Read Type Description Accepted wre values Installation and user s manual TAC4 DG Modbus RTU 41000 41010 41020 41030 41040 41050 41060 41070 41080 41090 41100 41110 41120 41130 41140 41150 41160 41170 41180 41190 41200 41210 41220 41230 41240 41250 41260 41270 41280 41290 41300 41310 41320 41330 41340 41350 41360 41370 41007 41017 41027 41037 41047 41057 41067 41077 41087 41097 41107 41117 41127 41137 41147 41157 41167 41177 41187 41197 41207 41217 41227 41237 41247 41257 41267 41277 41287 41297 41307 41317 41327 41337 41347 41357 41367 41377 Ww R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W z E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 Parameters for Monday Timesegment 1 Parameters for Monday Timesegment 2 Parameters for Monday Timesegment 3 Parameters for Monday Timesegment 4 Parameters for Monday Timese
10. 20r4 1 CA 2 LS 4 CPs 41xx2 Start Stop 0 Fans stopped 1 1 Fans run Factory default 1 Run Not used always at 1 41xx3 Setpoint 1 If 41001 0 OFF mode not used 0 9999 If 41001 1 CA mode setpoint for supply airflow in m3 h units Range 0 max of unit If 41001 2 LS mode Percentage of nominal setpoint if 40505 1 setpoint only for supply in units Range 0 100 If 41001 3 CPs mode Percentage of nominal setpoint if 40443 2 setpoint only for supply in units Range 0 100 41xx4 Setpoint 2 If 41001 0 OFF mode not used 0 9999 If 41001 1 CA mode setpoint for exhaust airflow in m3 h units Range 0 max of unit If 41001 2 LS mode if 40505 0 Exhaust Supply flow ratio Range 5 999 if 40505 1 Percentage of nominal setpoint for extraction Range 1 100 in units If 41001 3 CPs mode if 40443 0 or 1 Exhaust Supply flow ratio Range 5 999 if 40443 2 Percentage of nominal setpoint for extraction Range 1 100 in units Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Eww TZAUERHAAN KLIMAATTECHNIEK 41xx5 T Setpoint heating Postheat setpoint 0 999 For NV KWout BA and KWext options In 0 1 units Range 0 999 meaning 0 99 90 0 is OFF 41xx6 T Setpoint Cooling setpoint 0 999 cooling For BA and BA options In 0 1 units Range 0 999 meaning
11. 3 min max of Range 0 9999 unit 0 40205 R W R Exhaust airflow selection via Modbus only if 40200 3 min max of Range 0 9999 unit 0 40221 R W R External pressure alarm 0 or 1 O No alarm 1 Pressure alarm activated 40222 R W R Fire alarm 0 or 1 O No alarm 1 Fire alarm activated 40223 R W R Bypass control Oor1 O Bypass auto based on measured and 2 1 Bypass forced open 40225 R W R ON OFF Postheat to desactivate the postheating 0 or 1 O Postheating allowed 1 Postheating not allowed 40226 R W R Fire alarm supply airflow Oor 1 O Supply fan is stopped in fire alarm 1 Supply fan is running in fire alarm Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU 40227 40228 40229 40230 40250 40251 40252 40253 40254 40256 40257 R W R W R W R W R W R W R W R W R W R W R W E1 E1 E1 E1 E1 E1 E1 AD 2 ar an Fire alarm exhaust airflow O Exhaust fan is stopped in fire alarm 1 Exhaust fan is running in fire alarm Boost control 0 Boost function not activated 1 Boost function activated ON OFF Postcool to desactivate the cooling 0 cooling allowed 1 cooling not allowed Cooling or heating selection 0 heating position 1 cooling position RESET Perform a reset to clear pending alarms and resume normal working Required to recover from fata
12. 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40161 R E1 Temperature T7 in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40162 R E1 Temperature in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40168 R E1 Status of digital outputs on the TAC4 DG circuit block 0 0 2047 Bitmap with 1 bit per input O OFF 1 ON Bit 0 1 alarm 1 alarm Bit 1 BYPASS 1 O closed 1 open Bit 2 BYPASS 2 not used always on Bit 3 CT O closed 1 open Bit 4 KWin O inactive 1 active Bit 5 KWout O inactive 1 active Bit 6 OR1 SAT pressure alarm O inactive 1 active Bit 7 OR2 SAT fan on O inactive 1 active Bit 8 OR3 SAT water pump NV O inactive 1 active Bit 9 OR4 SAT bypass status O inactive 1 active Bit 10 SAT BA WP O inactive 1 active Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL SN TZAUERHAAN KLIMAATTECHNIEK 40170 R E1 Analog output OUT1 0 100 Image of the flow or pressure of one fan to be configured in advanced setup In 0 1V units range 0 100 meaning 0 0V 10 0V 0 10V 0 Max airflow or pressure of the fan 40171 R Analog output OUT2 0 100 Image of the flow or pressure of one fan to be configured in advanc
13. Parameters for Sunday Timesegment 4 41400 41407 R W El Parameters for Sunday Timesegment 5 41410 41417 R W E1 Parameters for Sunday Timesegment 6 9 8 Season management 9 8 1 Season management structure 3 features can be disabled by the calendar date Each feature can be disabled for a periode between 2 dates from Start date to End date 4 registers are provided to define those 2 dates Register Description Accepted values 418xx Start day Start date for disable of the feature 1 31 day of the month 418xx 1 Start month Start date for disable of the feature 1 12 month 418xx 2 End day End date for disable of the feature 1 31 day of the month 418xx 3 End month End date for disable of the feature 1 12 month If these 4 registers are configured the feature is disabled from the start date upto and including the end date Set any of these to 0 to disable seasonal management of this feature 9 8 2 Season management mapping Register Read Type Description Accepted 5 values 41800 41803 Season disable of the bypass 41800 Start date day of month 1 31 41801 Start date month 1 12 41802 End date day of month 1 12 41803 End date month 1 12 Set any of these to 0 to disable seasonal management of the bypass 41804 41807 R W E1 Season disable of the postheating For NV KWout BA and KWext options 41804 Start date day of month 1 31 41805 Start date month 1 12 41806 End date day of mo
14. Range 10 50 meaning 1 0 5 0 C Antifreeze air air exchanger Allow supply airflow to be stopped if T3 lt TLOW O NO 1 YES KWin option Preheat KWin PID PB Gain 100 PB In units KWin option Preheat KWin PID Ti In sec units KWin option Preheat KWin PID Td In sec units NV option Postheat NV speed Range 10 1 10 fastest 1 slowest KWout option Postheat KWout PID PB Gain 100 PB In units KWout option Postheat KWout PID Ti In sec units KW out option Postheat KWout PID Td In sec units Oor1 min max of unit O min max of unit 0 50 270 60 280 Oor1 min max of unit 0 min max of unit O 90799 Oor1 10 30 10 50 Oor1 1 100 0 9999 0 9999 1 100 09999 09999 www AUERHAAN KLIMAATTECHNIEK NL Sy TZ AUERHAAN KLIMAATTECHNIEK Installation and user s manual TAC4 DG Modbus RTU 40530 40531 40532 40533 40534 40535 40536 40537 40538 40539 40540 40541 40542 40543 40546 40547 40548 40549 40550 40551 R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 Analog output OUT1 Selection of the parameter to be sent on OUT1 O m3 h F1 1 Pa F1 2 m3 h F2 3 Pa 4 m3 h F3 5 Pa F3
15. controls the coils capacity in function of the assigned T and of resulting exhaust T e The control only allows the heating coil to be operated if the supply fans are in working This wiring is factory made e Post ventilation feature see advanced setup If the fans are requested to stop the R3 relay is opened and therefore the power supply to the coils is also shut down The fans continue running for 90 seconds to insure post ventilation of the electrical coils f conditions make that the pre heating coil KWin does not deliver enough capacity to reach the floor T assignment and therefore not insuring the anti frost duty the control will modulate the in and out airflows as follows a T lt 10 and T lt floor T 1 50 for more than 5 minutes If CA and LS mode reduction of in and outgoing airflows to 66 of the assigned airflows If CPs Mode reduction to 75 of the assigned pressure This setup is maintained during 15 minutes after which the 100 airflow pressure assignment is reestablished Actions on RC if connected Actions on TAC4 DG circuit fans Display text LED LED Pa LED Relay AL1 Relay R2 LED AF ALARM ALARM on SAT3 O R 1 AF T RED ON ON Assignment ALARM reduction REDUCED AIRFLOW b If T 5 during 5 minutes the unit is stop ped Actions on RC if connected Actions on TAC4 DG circuit fans Display text LED LED Pa LED Relay AL1 Relay R2 LED AF ALARM ALARM on SAT3 O R
16. of unit 0 max of unit 0 max of unit 0 or 1 25 999 25 999 min max of unit 0 max of unit min max of unit 0 max of unit 0 100 0 100 min max of unit min max of unit 1 100 www AUERHAAN KLIMAATTECHNIEK NL Eww TZAUERHAAN KLIMAATTECHNIEK 40443 R W E1 Control on supply or exhaust selection 0 1 or 2 For CPs mode only Control pressure on the supply and or exhaust flow O on supply 1 on exhaust 2 0n supply and on exhaust 40444 R W E1 Constant pressure data min max of For CPs mode only unit Reference flow 1 used for measuring pressure supply fan flow if CPs on SUP or CPs on SUP EXH exhaust fan flow if CPs on EXH In m3 h units 40446 R W E1 Constant pressure data 0 100 For CPs mode only Reference voltage to keep constant in CPs mode If CPs on SUP EXH reference voltage for Supply flow In 0 1V units range 0 100 is 0 10 0V 40447 R W E1 Cooling setpoint 0 999 For BA and BA options In 0 1 units Range 0 999 meaning 0 99 90 0 is OFF 40448 R W E1 Constant pressure data min max of For CPs mode only unit Reference flow 2 used for measuring pressure exhaust fan flow if CPs on SUP EXH In m3 h units 40449 R W E1 Constant pressure data 0 100 For CPs on SUP EXH only Reference voltage for exhaust flow to keep constant In 0 1V units range 0 100 is 0 10 0V 9 6 ADVANCED SETUP parameters Register Read Type Description Acce
17. sensor T3 T T3 gt 30 the assigned airflow is as defined by SETUP e OC lt T T3 lt 3 the airflow assigned by SETU P is automatically modified as follows If CA or LS working mode the supply airflow will progressively drop down to 33 AFiow of the assigned airflow If CPs mode the assigned pressure will drop to 50 AFiow of the assigned pressure AF In these conditions LED AF is ON T T3 06 the supply airflow is stopped for a s long as T T3 lt 1 during 5 minutes In these conditions LED AF is blinking All these temperature SET values can be modified using ADVANCED SETUP for ADVANCED SETUP manual see www lemmens com Antifreeze diagram LED AF ON a LED AF blinking 3 5 2 Antifrosting the heat exchanger with 1 pre heating KWin option If a KWin pre heating coil is option is installed in the HRg or HRup unit the heat exchanger is protected from frosting by a modulating electrical coil assigned to maintain a pre set temperature at the outlet of the heat exchanger in the exhaust airflow The KWin is delivered ready to use from the factory The default assignment T after heat exchange is 150 If necessary this value can be changed using theadvanced setup feature see www lemmens com www AUERHAAN KLIMAATTECHNIEK NL ZAUERHAAN KLIMAATTECHNIEK TAC4 DG regulation antifrost functions A solid sate relay controlled by the TAC4 DG regulation
18. 0 bypass When the bypass is open fans may either continue to function in the same manner and setpoint as when the bypass is closed either operate at a fixed exhaust and supply airflow rate These airflow values can be re set via the SETUP AVANCE see www lemmens com According to inside and outside temperatures the TAC4 DG control will monitor the opening closing of the 100 by pass damper The by pass is delivered completely wired and motorized from factory No wiring or installation is required by the installer The O R 4 relay SAT3 option of the TAC4 DG circuit indicates the opening closing of the bypass www AUERHAAN KLIMAATTECHNIEK NL Ew AUERHAAN KLIMAATTECHNIEK Operating description e Opening of 100 by pass if all following conditions are met Outside T sensor T1 lt inside T sensor T2 1 Outside T sensor T1 gt 150 Inside T sensor T2 gt 220 e Closing of 100 by pass if one of the following conditions is met Outside T sensor T1 gt inside T sensor T2 Outside T sensor T1 lt 146 Inside T sensor T2 205 All these temperature SET values can be modified using ADVANCED SETUP see www lemmens com When the bypass is open the pressure alarm is deactivated For the HRg 4000 and HRg 6000 models the maximum airflow when the bypass is open is reduced respectively at 3500 m h and 5300 m h For the other models there is no reduction of the maximum airflow wh
19. 1 AF T RED ON Alarm Blink Stopped ALARM status STOP FANS Restart is made by resetting by pressing the RESET knob on TAC4 DG circuit or via the 40250 register 3 6 KWout post heating electrical coil control option The post heating coil is delivered factory mounted lts purpose is to keep a constant supply air temperature using the TAC4 DG regulation The assigned T is configured according to the 4042 5 register Features provided by the TAC4 DG regulation Regulation of static relay of the electric coil in function of assigned supply T and actual measured supply T To avoid overheating regulation checks if fans are operating before supplying electric coil This is factory pre wired A post ventilation of the coil function is available see advanced configuration When fans are requested to stop first the electrical coils are shut down then the fan operate for 90 seconds minimum value before stopping This feature cools the coils before actually stopping the fans Itis possible to stop the post heating with an external contact IN6 see detail in the 3 6 1 or via the 40225 register Setpoint alarm see details in section 3 9 1 and 3 9 2 e Sensor alarms see details in section 3 9 1 and 3 9 2 Installation and user s manual TAC4 DG Modbus RTU 9 www AUERHAAN KLIMAATTECHNIEK NL TZ AUERHAAN KLIMAATTECHNIEK 3 6 1 Wiring diagrams Wiring the supply T sensor to the TAC DG b
20. 4 DG RC TAC4 A GND 12V At GND 12V o p Cable specifications e Recommended cable category 5 shielded twisted pair FTP cable with a section of 0 26 0 50 mm 2 Use 1 pair to connect GND and 12V and 1 pair to connect B and A e Maximum cable length 1000 m e Keep this communication cable at distance from power cables If the unit is installed in a location with high electro mechanical interference levels we strongly advise to connect the armour shield of the TAC4 DG RC cable on one side of the ground only If the HRg unit is installed outside select a suitable cable for outdoor application UV light 7 2 Use of RC TAC4 7 2 1 RC TAC4 is Master The MODBUS Communication does not control the fans register 40200 1 2 or 3 The RC allows the configuration of the unit the control of the fans and the display of all the parameters For more information on its use refer to MI TAC4 DG RC documentation available on our www lemmens com site 7 2 2 MODBUS is master An RC TAC4 connected to a unit controlled via MODBUS register 40200 1 or 2 can display the parameters of the unit Control and configuration features are disabled on the RC TAC4 For more information refer to DT TAC4 DG display documentation available on our www lemmens com site However it is possible to enable the RC TAC4 control features by closing the contact between terminals 12V and IN5 on circuit the TAC4 DG The RC T
21. 40078 R E1 Fan 4 pressure 0 max of unit 40079 R E Fan 4 torque Range 0 255 127 50 0 255 40080 R E1 Fan 4 RPM 0 6000 40081 R El working hours of the unit 0 999999 40082 RUN TIME xxxxxx h 32 bit value in 2 words 40083 R E1 Antifreeze status 0 1 or 2 O OFF 1 antifreeze of the air air heat exchanger is activated 2 antifreeze of the warm water heat exchanger is activated 40084 R E1 Bypass status 0 or 1 O CLOSED 1 OPEN 40085 R E1 CTin option Damper status 0 1or2 O CLOSED 1 OPENING 2 OPEN 40086 R E1 post ventilation status 0 or 1 O NO 1 active 40087 R E1 Current control mode indicates what controls the airflows 1 10 1 FATAL ERROR Fans are stopped 2 FIRE ALARM registers 40511 and 40512 3 RC remote control RC TAC4 4 EXTERNAL CONTACTS K1 K2 K3 contacts 5 TIMESCHEDULER configured by the RC TAC4 6 TIMESCHEDULER configured by MODBUS or by the GRC 7 MODBUS register 40201 8 BYPASS registers 40516 and 4051 7 9 BOOST registers 40548 and 40549 10 MODBUS registers 40204 and 40205 40088 R E1 Antifreeze status of the external exchangers ON 0 0FF 1 antifreeze of the water exchanger BA or BA is activated 2 antifreeze of the cold water exchanger BA is activated 3 antifreeze of the warm and cold water exchangers BA and BA are activated 40089 R E1 Current Supply T heating setpoint in 0 1 units 0 999 Range 1 999 meaning 0 1 99 9 0 is supply heating OFF Installation
22. 54 run exhaust with ratio measure K2 voltage store reference voltage CPs on EXH run exhaust with reference flow set in 40254 run supply with 1 ratio measure K2 voltage store reference voltage CPs on SUP EXH run supply with reference flow set in 40254 run exhaust with reference flow set in 40257 measure K2 voltage for supply measure K3 voltage for exhaust store reference voltage Working mode is set to 9 during the initialization Read O idle 1 start Write 1 to start Initialization flow 2 Reference flow used for CPs mode initialization exhaust fan flow if CPs on SUP EXH Range is limited to the minimum and maximum flow of the fans used 4_AUERHAAN KLIMAATTECHNIEK Oor 1 Oor 1 Oor 1 Oor 1 Oor1 Oor 1 Oor 1 Oor 1 min max of unit Oor 1 www AUERHAAN KLIMAATTECHNIEK NL ANN AUERHAAN KLIMAATTECHNIEK 9 4 Alarms See our Alarm document for more details Register Read Type Alarm bits Accepted Write Alarm flags are bits in holding registers 1 bit per alarm 16 values alarms per register Bit is 1 if alarm is active Read only 40300 R E1 Bit 0 ALARM_PROGRAM_ERROR 0 65535 Bit 1 ALARM_DATA_ERROR Bit 2 ALARM_FAN1 Bit 3 ALARM_FAN2 Bit 4 ALARM_FAN3 Bit 5 ALARM_FAN4 Bit 6 ALARM PRESSURE F1 Bit 7 ALARM PRESSURE F3 Bit 8 ALARM OPEN Bit 9 ALARM SHORT Bit 10 ALARM T2 OPEN Bit 11 ALARM T2 SHORT Bit 12 ALARM
23. 6 m3 h F4 7 Pa F4 Analog output OUT2 Selection of the parameter to be sent on OUT2 O m3 h F1 1 Pa F1 2 m3 h F2 3 Pa F2 4 m3 h F3 5 Pa F3 6 m3 h F4 7 Pa F4 Post ventilation Activation of the post ventilation O NO 1 YES Post ventilation Selection of the post ventilation time In sec units Fan run time Activation of the telling of the working hours of the unit O NO 1 YES Fan run time To display the working hours on the RC or GRC TAC4 O NO lees Fan run time To activate a SERVICE alarm after a predetermined time O NO 1 YES Fan run time Time for the SERVICE alarm In hours units 32 bit value in 2 words Fan run time To stop the fans after a predetermined time O NO 1 YES Fan run time Time to stop the fans in SERVICE alarm In hours units 32 bit value in 2 words To display only the alarms on the RC TAC4 Airflows pressures and other parameters are hidden O NO 1 YES MODBUS configuration Modbus Address of the TAC4 circuit Access code for RC TAC4 To require a code to get access to setup menus O NO 1 YES Access code for RC TAC4 Code selection Boost data Supply airflow when Boost is activated In m3 h units Boost data Exhaust airflow when Boost is activated In m3 h units SAT BA KW option external heating or cooling Selection of the external heating or cooling exchanger 0 none 1 BA 2 BA 3 BA BA 2 exchangers 4 BA 1 exchanger for he
24. AC4 standard features are then enabled For more information on its use refer to the MI TAC4 DG RC documentation available on our www lemmens com site 8 Use with external contacts It is possible to control the unit with external contacts connected on the digital entries of the TAC4 DG regulation by closing the contact between terminals 12V and IN1 on the TAC4 DG board For more information refer to MI TAC4 DG RC documentation main cfr TAC4 DG available on our www lemmens com site Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU Ew AUERHAAN KLIMAATTECHNIEK 9 Detailed MODBUS table Legend Read Write R Read only R W Read and Write Register type E1 Register in EEPROM memory with endurance of 100 000 write cycles R Register in a non volatile RAM memory 9 1 General info Register Read Type Description Accepted values 40001 Magic number to detect a Lemmens product 19533 40002 Two words First word is 19533 second word is 20051 These are 20051 the ASCII values of LMNS If read as a 32 bit value the value is 1 314 081 869 40003 R E Lemmens product identification code number of the TAC4 Unsigned regulation CID 0 32767 40004 R E1 Modbus mapping version Unsigned Major 100 minor 0 32767 Example 100 major 1 minor 0 40005 R E1 Software version major 0 99 T
25. ANCE ALARM indicates the fan operating time in hours has exceeded a certain limit set during the configuration STOP FAN indicates the fan operating time in hours has exceeded a certain limit set during the configuration This alarm stops the fans See 7 in table below 40303 register bit 4 5 Type 8 Alarm indicating a communication breakdown between the TAC4 DG circuit and the RC TAC4 This alarm indicates a communication problem between the 2 modules of the TAC4 DG regulation It is only displayed on the RC TAC4 not via the MODBUS communication See 8 in table below Type 9 Alarm indicating a T sensor T1 T2 T3 failu re One or more of the T sensors T1 T2 T3 connected to the TAC4 DG circuit and mounted on heat exchanger is defect or not connected These sensors are crucial for the by pass control and the antifrost procedure After correction of the failure it is necessary to perform a RESET via the 40250 register or via the RESET button on the TAC4 DG circuit See 9 in table below 40300 register bit 8 to 13 Type 10 Alarm indicating failure on T sensor T4 only with NV option It indicates that the T sensor T4 located on the c oil and connected to the TAC4 DG circuit is defect open or short circuit or not connected This sensor is used to avoid frosting of the NV coil In this case as a safety measure the 3 way valve is opened and the contact used to start the circulator is closed After fixing the failure it is nec
26. HNIEK NL ANN AUERHAAN KLIMAATTECHNIEK 6 13 Seasonal programming 3 features can be en disabled during certain periods of the year The bypass the post heating and the post cooling Configure a time period between 2 dates and enter feature status i e closed position for the Bypass and OFF for the heating or cooling regardless of the configuration and actual temperature values Setup Enter time periods for BYPASS see MODBUS table 89 8 below 41800 41803 Enter time periods for post heating see MODBUS table 9 8 below 41804 41807 Enter time periods for post cooling see MODBUS table 9 8 below 41808 41811 6 14 Advanced setup Other parameters and advanced functionalities are accessible via MODBUS They require a thorough knowledge of the regulation You can find the details concerning these parameters in the detailed MODBUS table or in document DT TAC4 DG advanced setup available on our www lemmens com site Fans start torque Prevent stop of the fans Configuration of AF anti frost of coils Reaction speed of modifications on post heating cooling OUT1 and OUT2 definition In mode CPs positive or negative logic reaction speed of the CPs algorithm Post ventilation configuration Access code configuration Factory reset Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Ew AUERHAAN KLIMAATTECHNIEK 7 Use of RC TAC4 remote control
27. R E1 Preheat option KWin 99 99 Temperature setpoint in 0 1 units Range 99 99 meaning 9 9 9 9 www AUERHAAN KLIMAATTECHNIEK NL Sy ZAUERHAAN KLIMAATTECHNIEK 40059 R E1 Heating or cooling option KWout NV and SAT BA KW 0 999 Temperature setpoint in 0 1 units Range 0 999 meaning 0 99 90 0 means supply heating and cooling are OFF 40060 R E1 Current Exhaust Supply ratio unbalance between exhaust and 5 999 supply flows in Range 5 999 40061 R E1 Pressure alarm data 0 max of unit Supply reference flow for pressure alarm in m3 h 40062 R E1 Pressure alarm data 0 max of unit Supply reference pressure for pressure alarm in Pa 40063 R E1 Pressure alarm data 1254 m3 h Exhaust reference flow for pressure alarm in m3 h 40064 R E1 Pressure alarm data 370 Pa Exhaust reference pressure for pressure alarm in Pa 40065 R E1 Fan 1 Supply 1 flow 0 max of unit 40066 R E1 Fan 1 pressure 0 max of unit 40067 R E1 Fan 1 torque Range 0 255 127 50 0 255 40068 R E1 Fan 1 RPM 0 6000 40069 R E1 Fan 2 Supply 2 flow 0 max of unit 40070 R E1 Fan 2 pressure 0 max of unit 40071 R E1 Fan 2 torque Range 0 255 127 50 0 255 40072 R E1 Fan 2 RPM 0 6000 40073 R E1 Fan 3 Exhaust 1 flow 0 max of unit 40074 R E1 Fan 3 pressure 0 max of unit 40075 R E1 Fan 3 torque Range 0 255 127 50 0 255 40076 R E1 Fan 3 RPM 0 6000 40077 R E1 Fan 4 Exhaust 2 flow 0 max of unit
28. Setup Choose external coil type 40550 Enter supply airflow setpoint temperature for heating 40425 Enter supply airflow setpoint temperature for cooling 40447 Control Disable post heating 40225 Disable post cooling 40229 Select heating or cooling method 40230 Display Actual supply air T setpoint cool or heat 40059 If BA or BA option age opening of 3 way valve 40174 If BA option age opening of 3 way valve 40175 If KWext option actual age of maximum capacity of KW coil 40188 Actual Supply ait T T 40159 Antifrost status of external water coils 40088 6 11 Run time and maintenance alarms Setup Activate run time logging 40534 Display run time on RC TAC4 40535 Activate maintenance alarm 40536 Hour count limit for maintenance alarm 40537 Activate maintenance alarm with a fan stop 40539 Hour count limit for maintenance alarm with fan stop 40540 Control RESET hour count 40252 Display Hour count of unit 40081 Status of maintenance alarm 40303 bit 4 and 5 6 12 Operating with time tables TAC4 units can operate automatically according to a timetable The timetable features a 7 days 6 timeslots per day programming For each time slot it is possible to configure the working mode and its different parameters the supply air T setpoint heating and cooling and the status of the bypass Setup See MODBUS 9 7 table below 41000 41417 Control Enable automatic operation 40200 www AUERHAAN KLIMAATTEC
29. Sn lt 4 AUERHAAN KLIMAATTECHNIEK ALWAYS ONE STEP AHEAD Eng Installation and MAUER HAAN users manual KLIMAATTECHNIEK AC4 DG Modbus RTU mfAJERHAAN KLIMAATTECHNIEK Lt Co Ennn ha TAC Ag 5 A Fien ma CID 625000 E H 10 E ITT TETEE DTT Te TNT ECT EKE r hel hs p Installation and user s manual TAC4 DG Modbus RTU VERHAAN kLIMAATTECHNIEK NL TZ AUERHAAN KLIMAATTECHNIEK TABLE OF CONTENTS 1 Funethonanties Of the FOC ULATION isi nan deden den enenen aED 5 2 General infonmatlONsnrsenitseni ene aidshanen dte anntdenn deet 6 2 1 General schematic of the HRQ units aanne en ennennennsennner eenen e ennen venene ennen aa 6 2 2 Schematic of the T sensors positioning in the HRQ unit nnn ennenenn eenen eennen een ereennen venen 7 2 3 Label located inside the cover of the Control panel 3 annen enen eneneerenenensenenenenneneneneeneennenenenenn 7 8 3 1 Fans WORN TIO OCS namen er 8 3 1 1 OARODE oe se ret yo on atest ceo E 8 ee en 8 OD coc nner E or Or es ee ee ee ere ees 9 Ol eee ee eee eee 9 3 2 BYPASS UNCION sers oxcqcvarordeduencvdentersicesvac aveedierostectenozesttemcusetmedendetcedeneutwahtedesemdnmamsmetendabests 9 3 3
30. W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 Fire alarm normally open or closed contact selection 0 normally open N O 1 normally closed N C Fire alarm airflow selection airflow for supply In m3 h units Fire alarm airflow selection airflow for exhaust In m3 h units Bypass data T4 value 40514 is raised if required to meet the T2 gt T1 1 requirement In 0 1 units Range 50 270 meaning 5 0 27 0 Bypass data T2 value T2 must be gt T1 1 In 0 1 units Range 60 280 meaning 6 0 28 0 Bypass data To force airflows when bypass is open O NO 1 YES Bypass data If 40515 1 Supply airflow when bypass is open In m3 h units Bypass data If 40515 1 Exhaust airflow when bypass is open In m3 h units KWin option Preheat setpoint of the air air exchanger antifreeze protection In 0 1 C units Range 99 99 meaning 9 9 9 9 C Antifreeze air air exchanger Activation of the antifreeze protection O NO 1 YES Antifreeze air air exchanger T LOW Antifreeze T HIGH is raised if required to meet the THIGH gt T LOW 1 requirement In 0 1 units Range 10 30 meaning 1 3 Antifreeze air air exchanger T HIGH THIGH must be gt T LOW 1 In 0 1 units
31. ain a constant pressure as measured by the pressure sensor in the duct The exhaust airflow is equals to EXT PUL of the supply airflow CPs on EXHAUST air The airflow delivered by the exhaust fans is automatically modulated to obtain a constant pressure as measured by the pressure sensor in the duct The supply airflow is equals to 1 EXT PUL of the exhaust airflow CPs on SUPPLY EXHAUST the airflow of the supply fan s is modulated so as to maintain constant a certain pressure value measured by a pressure sensor wired on K2 The airflow of the exhaust fan s is modulated so as to maintain constant a certain pressure value measured by a pressure sensor wired on K3 Wiring diagrams The pressure sensor is connected to entry K2 of the TAC4 DG circuit In the case of CPs on supply exhaust the pressure sensor on supply side is connected to K2 and on the exhaust side is connected to K3 a Wiring to 1 circuit 472V INT 2 IN3 IN4 INS ING IN INS INS 12V GND T 5 GNDOUT1 OUT2 0 10 Vde b Wiring to several circuits in parallel IN2 ND ING NS Mn KI INT 53 INS INS INS BU INB OND T S slab K2 gt 0 10V signal maximum impedance allowed 1500 Q 3 1 4 OFF MODE It allows to stop the fans To restart the fans it is required to choose one of the other 3 working modes 3 2 BYPASS function freecooling The counterflow heat exchanger is fitted with a 10
32. and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL AN AAUERHAAN KLIMAATTECHNIEK 40090 R E1 Current Supply T cooling setpoint in 0 1 units 0 999 Range 1 999 meaning 0 1 99 90 0 is supply cooling OFF 40150 R E1 Status of digital inputs on the TAC4 DG circuit 0 16383 Bitmap with 1 bit per input O OFF 1 ON closed with 12V Bit 0 K1 Bit 1 K2 as on off Bit 2 K3 as on off Bit 3 Bit 4 IN2 Bit 5 IN3 Bit 6 IN4 Bit 7 IN5 Bit 8 IN6 Bit 9 IN7 Bit 10 IN8 Bit 11 IN9 Bit 12 IN10 Bit 13 IN11 40152 R E1 K1 Analog voltage 0 100 K1 is a digital input but it is shown here for completeness 0 100 0 10 0V 40153 R E1 K2 Analog voltage 0 100 0 100 0 10 0V 40154 R E1 K3 Analog voltage 0 100 0 100 0 10 0V 40155 R E1 Temperature in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40156 R E1 Temperature T2 in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40157 R E1 Temperature in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40158 R E1 Temperature T4 in 0 1 units 999 999 Range 990 990 meaning 99 0 99 0 999 means open circuit 999 means short circuit 40159 R E1 Temperature TS in 0 1 units 999
33. ating and cooling 5 KW 6 KW BA BA option Colling BA speed Range 10 1 10 fastest 1 slowest 0 0 7 0 or 1 09999 Oor1 0 or 1 0 or 1 0999999 0 1 0999999 0 1 1 247 Oor1 0 9999 min max of unit 0 min max of unit 0 0 6 www AUERHAAN KLIMAATTECHNIEK NL AUERHAAN KLIMAATTECHNIEK 40552 R W E1 BA Antifreeze T threshold 0 999 In 0 1 units Range 0 999 meaning 0 99 9 BA control enters 15min antifreeze cycle if T7 lt this threshold and OUT7 lt 3V 40553 R W E1 BA Antifreeze T threshold 0 999 In 0 1 units Range 0 999 meaning 0 99 9T BA control enters 15min antifreeze cycle if T8 lt this threshold and OUT8 lt 3V 40554 R W E1 NV Antifreeze T threshold 0 999 In 0 1 units Range 0 999 meaning 0 99 9 BA control enters 15min antifreeze cycle if T4 lt this threshold and OUT4 NV lt 3V 9 7 Time scheduler 9 7 1 Time scheduler structure Timeshedule for 1 week 6 timesegments per day Each timesegment has 8 parameters 10 registers are provided per timesegment Register Description Accepted NEUE 41xx0 Start time Starting time of this time segment 0 2359 Value 100 hh mm 800 8h00 1 not used Value 1 this timesegment is not used Each timesegment runs untill another timesegment starts Factory default 1 time segment not used 41xx1 Workingmode Working mode 0 1
34. ature between 2 dates avoid cooling in the winter www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ZAUERHAAN KLIMAATTECHNIEK 3 10 Alarms 3 10 1 Alarm types Type 1 Alarm indicating a fan failure This alarm indicates a failure of fan Fx This problem is usually caused by the motor If not the failure can be caused by an internal cable or by the TAC4 DG circuit See 1 in table below 40300 register bit 2 3 4 5 in MODBUS table Type 2 Alarm on the pressure variation CA and LS modes only This alarm indicates a pre established pressure level has been reached on fan Fx Pressure alarm setup in CA or LS mode see 6 4 See 2 in table below 40300 register bit 6 7 in MODBUS table Type 3 Alarm indicating a problem while initializing reference pressure for a pressure alarm 4 possibilities Actual airflow lt requested airflow The requested working point is too high too much pressure for the maximal available pressure at the requested airflow for this fan 40302 register bit 14 15 in MODBUS table Actual airflow gt requested airflow the nominal airflow requested to initialize the pressure alarm cannot be reached because the lower limit of the fan s operating zone has been reached 40303 register bit 2 3 in MODBUS table Very unstable pressure 40302 register bit 12 13 in MODBUS table Assigned airflow not reached after 3 minutes 40303 regis
35. certain threshold 40502 Value of the voltage upper threshold 40503 Possibility to separately control exhaust signal on K3 and supply 40505 signal on K2 airflows Control Set MODBUS as master of ventilation position 40200 Select ventilation position OFF or III 40201 Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL ZAUERHAAN KLIMAATTECHNIEK 6 2 4 CPs MODE Setup Select CPs mode 40426 Choice of the flow of regulation impulse and or extraction 40443 IF CPs applied to one airflow side supply or exhaust Select airflow unbalance ration exhaust supply 40427 Select derated airflow for position III 40442 If manual configuration Select assignment value to be kept constant 40446 If configuration via initialization procedure Select initialization airflow 40254 SI CPs sur 2 flux pulsion et extraction If manual configuration Enter setpoint value to be kept constant in the supply airflow 40446 Enter setpoint value to be kept constant in the exhaust airflow 40449 If configuration via nominal airflow procedure Enter nominal supply airflow for initialization procedure 40254 Enter nominal exhaust airflow for initialization procedure 40257 Start initialization procedure and pressure measurement 40256 Alarm while initialization procedure of setpoint pressure value 40302 bit12 to 15 40303 bit 0 to 3 Control Set MODBUS as master of ventilation position 40200 Se
36. ed setup In 0 1V units range 0 100 meaning 0 0V 10 0V 0 10V 0 Max airflow or pressure of the fan 40172 R E1 Analog output OUT4 NV 0 100 Postheat NV option opening of the 3 ways valve In 0 1V units range 0 100 meaning 0 0V 10 0V 40174 R E1 Analog output OUT7 0 100 Postheat cool BA or BA option opening of the 3 ways valve In 0 1V units range 0 100 meaning 0 0V 10 0V 40175 R E1 Analog output OUT8 0 100 Postcool BA option opening of the 3 ways valve In 0 1V units range 0 100 meaning 0 0V 10 0V 40186 R E1 output KWin 0 100 Preheat KWin option power of the electric coil In units range 0 100 meaning 0 100 40187 R El output KWout 0 100 Postheat KWout option power of the electric coil In units range 0 100 meaning 0 100 40188 R E1 output external KW SAT BA KW 0 100 Postheat SAT KW option power of the electric coil 26 In units range 0 100 meaning 0 100 9 3 Control Register Read Type Description Accepted 40200 Selection of the control master who will determine speed 0 1or2 0 RC TAC4 determines a 1 MODBUS determines speed via register 40201 2 TIMETABLE determines airlows automatic working 3 MODBUS determines airflows via registers 40204 40205 40201 R W R Speed selection via Modbus only if 40200 1 0 1 20r3 O STOP 1 LOW pos 2 MEDIUM pos ll 3 HIGH pos III 40204 R W R Supply airflow selection via Modbus only if 40200
37. en the RC TAC4 casing cccccccsscecseeeceseecaeeeeceueecseeeeceeeseueesseeeseueessaeeeseneessaeeeseaeesseeeesensesses 29 gt 7 1 2 Wiring diagram to connect the RC TAC4 REC to the TAC4 DG circuit neee eenen 30 30 5 RO OE Sh i seas ET 30 a 122 US 16 MASER benen 30 9 8 USE 8 5 90 www AUERHAAN KLIMAATTECHNIEK NL TZ AUERHAAN KLIMAATTECHNIEK 9 Detailed MODBUS 31 9 1 CTI E 31 9 2 NIS AN ENON ete eee tee nennen enaties 31 9 3 LLO EEE EDE 34 9 4 EEn 36 9 5 SETUP parameters saneren etn oaeen 37 9 6 ADVANGED SETUP DarAMElOS esmee 99 9 7 MNS SC Settee de occ eetset ten eben 42 9 7 1 MIE scheduler En 42 972 Time 49 9 8 g s le ng 2 ae 44 9 8 1 Season management structure oane onenneennenenersnerennerenenennerenrennnersnnersnenennerenensnnennserenen 44 9 8 2 Season management mapping sssarsenerre
38. en the bypass is open Bypass status BYPASS BYPASS OPENED CLOSED 3 3 BOOST Function The BOOST function allows forcing a preset airflow overruling all other configurations 3 4 Opening closing of dampers CT option at inlet The opening and closing of a damper s mounted at both supply and exhaust air inlets are automatically managed by the TAC4 DG regulation The actual fan startup is delayed to allow prior opening of dampers When fans are stopped the dampers are closed Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ANN Z AUERHAAN KLIMAATTECHNIEK 3 5 Heat exchanger antifrost protection system There is a risk of frosting the heat exchanger in the exhaust airflow Two antifrost protection systems are available e Supply air volume reduction less cooling capacity e Modulation of capacity of an electrical coil located before the inlet air enters the heat exchanger KWin option 3 5 1 Protection antifreeze via pulse flow reduction This functionality is built in the standard TAC4 DG and must not be configured by the installer It is automatically de activated if an optional KWin pre heater see 3 5 2 is installed in the unit Description In order to avoid the risk of frosting the heat exchanger the supply airflow is linked to the temperature value of the exhaust airflow measured after the heat exchanger
39. ers are stored in a non volatile RAM memory Those parameters have no writing limitation and their value is not lost in case of power break Those parameters are marked as R in the MODBUS map 5 Modbus map overview The TAC4 DG regulation can be entirely monitored by the MODBUS communication The MODBUS table can thus configure the SETUP advanced SETUP the display setup of all parameters and the control of the operation of the unit airflows and temperatures The MODBUS table is structured as follows Registers Group Read Write 40001 General info Read only Provides general information about the system 40020 Visualization Read only 40050 Shows actual values of a number of setup 40150 parameters and u nit parameters flows pressures inputs and outputs 40200 Control Read and write Control speed by different sources Control of functionalities like bypass fire alarm post heating Run initialization of pressure parameters Control of resets 40300 Alarms Read only Bitmap with alarm flags 40400 Setup parameters Read and write 40500 Advanced Setup parameters Read and write 41000 Time table configuration parameters Read and write 6 Use of MODBUS commands The MODBUS Communication gives access to all the parameters of the regulation You will find below the MODBUS registers associated with the principal functionalities of the TAC4 DG regulation For more detai
40. essary to perform a RESET via the 40250 register or via the RESET button on the TAC4 DG circuit See 10 in table below 40300 register bit 14 15 Type 11 Alarm indicating failure on T sensor T5 only with NV option or KWout It indicates a failure of the T sensor T5 located in the supply duct and connected to the TAC4 DG circuit opened or short circuit or that it is not connected This sensor is used to regulate the post heating function After fixing the failure it is necessary to perform a RESET via the 40250 register or via the RESET button on the TAC4 DG circuit See 11 in table below 40301 register bit 0 1 Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU Ew Z AUERHAAN KLIMAATTECHNIEK Type 12 Alarm indicating that the assigned T cann ot be reached only with NV option or KWout If the actual T is lower than the assigned T for more than 15 minutes with the post heating fully opened until See 12 in table below 40303 register bit 15 Type 13 et 14 Alarm indicating antifrosting alert only with KWin option In certain air T conditions as measured on the exh aust airflow after the heat recovery indicating that the Kwin has reached its limit the TAC4 DG control can take over to guarantee the antifrost function a Alarm type 13 If T lt assignment T 1 5 for mo re than 5 minutes supply and exhaust air
41. essure alarm 3 Stopping of the fans in function of entries IN7 IN8 and or the 40226 and 40227 registers www AUERHAAN KLIMAATTECHNIEK NL Sin 2Z AVERHAAN KLIMAATTECHNIEK 3 10 3 Wiring diagrams Option Optie SAT3 Specifications voir manuel d installation SAT Specificaties zie SATS handleidingsmanued Specifications see SATS installation manual POWER OFF 3 11 Plugging the SAT MODBUS satellite The MODBUS RTU communication with the TAC4 DG requires the addition of a satellite circuit option SAT MODBUS CID 025006 being used as interface of communication The assembly must be carried out with the power OFF Caution A bad positioning of SAT MODBUS on circuit TAC4 DG can fatally damage both circuits Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Ew AUERHAAN KLIMAATTECHNIEK 3 12 Wiring the SAT MODBUS a Wiring one unit SAT MODBUS b Network wiring SAT MODBUS 1 SAT MODB US 2 B GND A B 4 Definition of the MODBUS RTU communication 4 1 MODBUS Protocol The TAC4 DG controller uses the communication protocol MODBUS RTU This protocol is based on a master slave architecture Each message has the same structure the frame is made of the slave address the function code writing or reading the data and a numeric test value to test for communication errors CRC16 Main s
42. flow reduction of 33 if CA or LS and of 25 if CPs for 15 minutes b Alarm type 14 If T lt 5 during 5 minutes fan s are stopped It is necessary to perform a RESET via the 40250 register or press RESET on the TAC4 DG circuit to restart the unit See 13 amp 14 in table below 40303 register bit 11 12 3 10 2 Alarm table Actions on RC TAC4 Actions on the TAC4 DG circuit ea on if connected ea Type Display 1 LED LED Pa LED R2 relay LED AF ALARM ALARM ard of SAT3 O R 1 ALARM Alarm Stopped FANx status 2 PRESSURE Rouge ON Closed ALARM 2 3 ALARM Red ON Alarm Stopped INIT Pa status 4 ALARM ON CA LS or CPs 5 DATA Red ON Alarm Stopped ERROR status 6 FIRE Red ON Alarm Stopped ALARM status 3 7 ALARM Red ON Alarm SERVICE status FAN STOP Red ON Alarm Stopped SERVICE status 8 CB COM Red i ERROR 9 ALARM T Red ON Alarm Stopped SENSOR status 1 2 3 10 ALARM T Red ON Alarm SENSOR 4 status 11 ALARM T Red ON Alarm SENSOR 5 status 12 ALARM Red ON i POSTHEAT T TOO LOW 13 AF T Red ON ON Reduced ALARM airflow AIRFLOW REDUCED 14 AF T Red ON Alarm Blinking Stopped ALARM status STOP FANS no action 1 detailed text is displayed in successive screens detailed texts available on www lemmens com 2 Unless setup configuration stipulated fans must be stopped in the event of pr
43. gment 5 Parameters for Monday Timesegment 6 Parameters for Tuesday Timesegment 1 Parameters for Tuesday Timesegment 2 Parameters for Tuesday Timesegment 3 Parameters for Tuesday Timesegment 4 Parameters for Tuesday Timesegment 5 Parameters for Tuesday Timesegment 6 Parameters for Wednesday Timesegment 1 Parameters for Wednesday Timesegment 2 Parameters for Wednesday Timesegment 3 Parameters for Wednesday Timesegment 4 Parameters for Wednesday Timesegment 5 Parameters for Wednesday Timesegment 6 Parameters for Thursday Timesegment 1 Parameters for Thursday Timesegment 2 Parameters for Thursday Timesegment 3 Parameters for Thursday Timesegment 4 Parameters for Thursday Timesegment 5 Parameters for Thursday Timesegment 6 Parameters for Friday Timesegment 1 Parameters for Friday Timesegment 2 Parameters for Friday Timesegment 3 Parameters for Friday Timesegment 4 Parameters for Friday Timesegment 5 Parameters for Friday Timesegment 6 Parameters for Saturday Timesegment 1 Parameters for Saturday Timesegment 2 Parameters for Saturday Timesegment 3 Parameters for Saturday Timesegment 4 Parameters for Saturday Timesegment 5 Parameters for Saturday Timesegment 6 Parameters for Sunday Timesegment 1 Parameters for Sunday Timesegment 2 www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU TZ AUERHAAN KLIMAATTECHNIEK 41380 41387 R W E1 Parameters for Sunday Timesegment 3 41390 41397 R W E1
44. he range of the clock is 1 jan 2000 31 dec 2099 e The date is validated when written e Automatic leap year correction e Automatic Daylight Saving Time DST adjustment following EU rules Adjust 01 00 at 2 00 on the last Sunday in March Adjust 1 00 at 3 00 at the last Sunday in October 40420 R W E1 LANGUAGE 0 1 2or3 language on the Remote control RC TAC4 O GB English 1 F French 2 D German 3 NL Dutch 40425 R W E1 Postheat setpoint 0 999 For NV KWout BA and KWext options In 0 1 units Range 0 999 meaning 0 99 9 0 is OFF Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Sw TA AUERHAAN KLIMAATTECHNIEK Installation and user s manual TAC4 DG Modbus RTU 40426 40427 40428 40429 40430 40431 40432 40433 40434 40435 40436 40437 40438 40439 40440 40441 40442 R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W R W E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 FANS WORKING MODE O OFF unit is stopped 1 CA constant airflows 2 LS airflow linked to 0 10V input signal 4 CPs constant pressure with sensor 9 INIT 9 is a temporary mode during initialization of pressure for pressure alarm or CPs mode Exhaust Supply ratio To create an unbalance between flows Airflow selection For CA mode onl
45. he software version number scheme is major minor revision Leading zeros are not used Valid versions would be v1 0 0 v1 3 18 or v2 14 6 V1 03 18 would be invalid Each part can be 0 99 at least 40006 R El Software version minor 0 99 40007 R E1 Software version revision 0 99 40008 R W E1 Flag indicating that controller has been reset 0 or 1 The modbus master can use this to detect that the controller has reset Flag can be written to zero by the master 9 2 Visualization Register Read Type Description Accepted values 40020 Factory configuration REC TYPE 32 bit value in 40021 32 bit value in 2 words 2 words 40022 R E1 Factory configuration PREHEAT OPTION 0 1 O OFF 1 ON KWin 40023 R E1 Factory configuration POSTHEAT OPTION 0 1or2 O OFF 1 ON KWout 2 ON NV 40024 R E1 Factory configuration CT IN damper OPTION 0 or 1 O NO 1 YES 40052 R E1 Current Working Mode 0 1 20r4 O OFF 1 CA 2 LS 4 CPs 9 INIT temporary mode during init of pressure alarm or init of CPs mode 40053 R E1 Current speed as stop low medium high 0 1 20r3 0 8 1 LOW I 2 MEDIUM II 3 HIGH III 40054 R E1 Current setpoint 0 9999 Range 0 9999 40055 R E1 Current Setpoint SET VAL unit 0 1or2 0 m3 h 1 Pa 2 0 1V 40056 R E1 Current setpoint for pulsion fans F1 F2 0 max of unit Can be m3 h Pa or 0 1V unit 40057 R E1 Current setpoint for extraction fans F3 F4 0 max of unit Can be m3 h Pa or 0 1V unit 40058
46. ion can be combined with TAC4 DG controller RC TAC4 Option remote control and visualization of the parameters please refer to TAC4 DG RC TAC4 installation and user s manual for detailed information SAT TAC4 BA KW Option regulation of 2 external heat exchangers electrical water hot and or cold TCP IP TAC4 MODULE Option MODBUS TCP IP communication please refer to TAC4 DG MODBUS TCP IP installation and user s manual for detailed information GPRS TAC4 MODULE Option GPRS Communication please refer to TAC4 DG GPRS installation and user s manual for detailed installation The SAT3 Option is a Circuit with 2 relays 2 SAT3 can be plugged please refer to SAT3 installation and user s manual for detailed information e When plugged in position OR1 OR2 status of Fan On warning and of Pressure alarm warning and or e When plugged in position OR3 OR4 status of NV option circulator and of bypass The MODBUS RTU Interface has the following functionalities Configuration of SETUP and ADVANCED SETUP Visualization of all the parameters Control operation of the unit airflows supply air temperatures etc www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU Ew AUERHAAN KLIMAATTECHNIEK 2 General information 2 1 General schematic of the HRg units CONOOF WD Main switch for power supply fans and control Main switch for p
47. l alarms This operation takes about 1 second The modbus write command will be answered immediately then the operation will be executed Modbus commands will not be answered during the operation Read always 0 Write 1 to perform reset RESET TO FACTORY DEFAULT VALUES Reset setup and advanced setup parameters to their factory default values This operation takes about 3 seconds The modbus write command will be answered immediately then the operation will be executed Modbus commands will not be answered during the operation Read always 0 Write 1 to perform reset RESET RUN TIME Reset run time working hours to zero Read always 0 Write 1 to perform reset Pressure alarm initialization Start the initialization Will be accepted in CA and LS mode only Initialization is run with reference flow set in 40254 measure pressure store reference pressure Working mode is set to 9 during the initialization Read O idle 1 start Write 1 to start Pressure initialization Initialization flow 1 Reference flow used for CA LS mode Pa alarm initialization Supply fan flow CPs mode initialization supply fan flow if CPs on SUP or CPs on SUP EXH exhaust fan flow if CPs on EXH Range is limited to the minimum and maximum flow of the fans used CPs mode initialization Start the initialization Will be accepted in CPs mode only CPs on SUP run supply with reference flow set in 402
48. lect ventilation position OFF ou III 40201 6 3 Viewing of fan data Operating mode 40052 Ventilation Position OFF Il HI 40053 Supply airflow assignment 40056 Exhaust airflow assignment 40057 Actual airflow on supply fan 1 40065 Actual pressure on supply fan 1 40066 Actual airflow on supply fan 2 40069 Actual pressure on supply fan 2 40070 Actual airflow on exhaust fan 1 40073 Actual pressure on exhaust fan 1 40074 Actual airflow on exhaust fan 2 40077 Actual pressure on exhaust fan 2 40078 Fan failure alarm 40300 bit 2 to 5 6 4 Viewing temperatures E 5 Inlet Temperature of fresh air from outside 1 40155 8 Inlet Temperature of stale air from the interior T2 40156 Exhaust air temperature after heat exchanger towards outside T3 40157 5 Water coil temperature NV option T4 40158 5 Supply air temperature after heat exchanger towards inside T5 40159 Hot water coil temperature BA ou BA option T7 40161 Cold water coil temperature option 8 40162 g Temperature sensor alarm 40300 bit 8 to 15 5 40301 bit O to 7 www AUERHAAN KLIMAATTECHNIEK NL ANN Z AUERHAAN KLIMAATTECHNIEK 6 5 Pressure Alarm Setup Pressure alarm activation 40431 Select delta P for pressure alarm on supply airflow 40432 Select delta P for pressure alarm on exhaust airflow 40433 Stop the unit if pressure alarm 40500 If manual configuration Select reference airflow to determine p
49. ls on these registers or for complete information on the parameters accessible via MODBUS see the complete table in 9 6 1 MODBUS Address Default MODBUS Address of a TAC4 DG circuit is 1 It is possible to modify this value via an MODBUS command 40543 Caution only connect to the network TAC4 DG circuits with different addresses Setup Modification of MODBUS address 40543 www AUERHAAN KLIMAATTECHNIEK NL ANN Z AUERHAAN KLIMAATTECHNIEK 6 2 Fans working modes 6 2 1 CA MODE airflows are continuously being sent by MODBUS Configuration Set MODBUS as master of airflow control 40200 Control Enter supply airflow 40204 Enter exhaust airflow 40205 6 2 2 CA Mode 3 airflow rates Setup Chose CA mode 40426 Select Airflow 1 40428 Select Airflow 2 40429 Select Airflow 3 40430 Airflow unbalance ration exhaust supply 40427 Control MODBUS is master of airflow selection position 40200 Selection of airflow selection position OFF II ou III 40201 6 2 3 LS MODE Setup Select LS mode 40426 Select minimum signal Vmin 40438 Select maximum signal Vmax 40439 Select airflow corresponding to Vmin 40440 Select airflow corresponding to Vmax 40441 Select unbalance ratio exhaust supply 40427 Select derated airflow for position Ill 40442 Possibility to stop the fans below a certain voltage threshold 40500 Value of the voltage lower threshold 40501 Possibility to stop the fans above a
50. nrennerrenrseneerense neer ennensnneenereneersnneennerenveenenn 44 Installation and user s manual TAC4 DG MODBUS RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU TZ AUERHAAN KLIMAATTECHNIEK 1 Functionalities of the regulation The TAC4 DG controller is mounted in the units of series HRglobal and HRup This handbook describes the functionalities of the regulation when connected to an external monitoring system communicating in MODBUS via the SAT MODBUS option The TAC4 DG controller provides the following features Monitoring of the fans exhaust and supply in chosen working mode constant airflow CA constant pressure CPs or constant airflow linked to 0 10V signal LS Management of 6 timeslots Alarms on defects setpoints overpressure Fire alarm airflow management BOOST function allowing to force a pre set airflow supply exhaust overriding the assigned airflow Automatic management of the 100 bypass to allow free cooling Automatic management of inlet dampers CT Heat exchanger antifreeze protection system by modulation of airflow or with an intelligent pre heat electrical coil KWin Postheating management of water coil NV or electrical coil KWout battery to keep a set temperature constant Display of the settings and working fans Analogical output signals of airflow and pressure Advanced setup The following opt
51. nth 1 12 41807 End date month 1 12 Set any of these to 0 to disable seasonal management of the postheating 41808 41811 R W E1 Season disable of the cooling For BA and BA options 41808 Start date day of month 1 31 41809 Start date month 1 12 41810 End date day of month 1 12 41811 End date month 1 12 Set any of these to 0 to disable seasonal management of the cooling Although we put a lot of care in the making of our documentation we cannot be held responsible for any error and or omissions that could have slipped in www AUERHAAN KLIMAATTECHNIEK NL TZ AUERHAAN KLIMAATTECHNIEK Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Auerhaan geeft lucht www AUERHAAN xxx MAATTECHNIEK NL Auerhaan Klimaattechniek heeft echt veel meer dan u denkt Wilt u n van onze andere brochures aanvragen Neem dan gerust contact met ons op Auerhaan ventilatie Auerhaan Compo serie Auerhaan CT serie Auerhaan Ecotherm luchtbehandeling WTW luchtbehandeling luchtbehandeling serie warmteterugwinning verwarming en koeling l 5 1 Recs mee ug yi anait wa Auerhaan REC serie Auerhaan Warmteterug Auerhaan Helios Complete warmteterugwinning winning voor scholen Stand alone ventilatie units catalogus ventilatoren Helios HygroBox Helios ECgreenVent Helios M1 power Helios RenoPipe luchtbevochtiger gelijkstroomventilatoren ultraSilence
52. oard 12V 12V IN1 IN2 IN3 IN4 INS IN6 IN7 IN8 IN9 12V GND T 5 GNDOUT1 OUT2 Sonde T T Sonde T sensor e Possibility to stop the post heating with an external contact 12V INT IN2 IN3 IN4 INS ING IN INS INS 12V Contact closed post heating OFF Contact open post heating ON 3 7 Post heating NV option regulation The post heating coil is delivered pre wired The 3way valve is delivered unmounted The NV option on the TAC4 DG regulation allows to maintain a pre set supply T constant The assignment T is set using the 40425 register Control features of the TAC4 DG e Monitoring the 3 way valve to keep assignment T c onstant using supplied sensor T value e Engaging a relay to start a water circulator output SAT 3 O R 3 on i o module see 3 7 1 Antifrost protection of the water coil based on the value of T4 T sensor provided and pre wired If value T4 lt 4C then the 3 way valve is opened and contact for circulator is closed during 15 minutes Itis possible to stop the post heating with an external contact IN6 see detail in the 3 7 1 or via the 40225 register e Setpoint alarm see details in section 3 9 1 and 3 9 2 e Sensor alarms see details in section 3 9 1 and 3 9 2 Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Z AUERHAAN KLIMAATTECHNIEK 3 7 1 Wiring diagrams e 3 ways valve wiring to TAC DG circ
53. ower supply to pre Kwin and or post Kwout heating coils options Centralized wiring box of the CB4 TAC4 DG circuit factory pre wired Supply fan s Exhaust fan s Post heating water or electrical coil NV ou KWout option Motorized damper at fresh air inlet CT option F7 class filter at fresh air inlet 9 Pre heating electrical antifreeze coil KWin option 10 Drain pan and drain 11 By pass 100 12 Air Air heat exchanger 13 G4 filter on exhaust air 14 Motorized damper at exhaust air inlet option 15 RC TAC4 All electrical connections made the installer are in 1 2 3 www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU 5 AUERHAAN KLIMAATTECHNIEK 2 2 Schematic of the T sensors positioning in the HRg unit To allow easier identification of the temperature sensors 4 different wire colors are used black wire white wire 173 blue wire T4 amp T5 green wire 2 3 Label located inside the cover of the control panel 3 BYPASS output to bypass actuator prewired MOTOR CONTROL CABLES 9 cid 4 1 FAN 2 3 4 CT output to CT actuator s option prewired ga we 2 KWout output for KWout power regulation option prewired t KWin output for KWin power regulation option prewired z 1 from outdoors sensor prewired 52 from indoors T sen
54. pecifications e MODBUS RTU protocol binary e Physical layer RS 485 asynchronous a 3 wire connection with GND is required e Factory default baudrate is 9600 1200 4800 9600 or 19200 are possible Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ZAUERHAAN KLIMAATTECHNIEK 4 2 MODBUS frame The MODBUS frame is presented in the following way 14247 03 06 16 16 bits Controller uses the Modbus RTU time based framing The receiver monitors the elapsed time between receipt of characters If three and one half character times elapse without a new character this is considered to be the end of frame The actual end of frame detection time is rounded to milliseconds because the system timing is millisecond based Address Possible slave address is 1 to 247 Factory default is 1 Function code e Supports function code 3 decimal for reading multiple holding registers e Supports function code 6 decimal for writing a single holding registers e Supports function code 16 decimal for writing multiple holding registers Data Number of databits is fixed to 8 Number of stopbits is fixed to 1 All TAC4 data is in 16 bit modbus holding registers Modbus coils discrete inputs or input registers are not used The modbus communication buffers have a size of 129 bytes This is sufficient for reading or writing 60 registers at once
55. pted a values 40500 Stop the fans in pressure alarm Oor1 For CA and LS mode only O NO 1 YES 40501 R W E1 Stop the fans if signal on K2 is lower than Vlow 0 or 1 For LS mode only O NO 1 YES 40502 R W E1 If 40501 is 1 value of Viow 0 100 For LS mode only In 0 1V units range 0 100 meaning 0 10 0V 40503 R W E1 Stop the fans if signal on K2 is higher than Vhigh Oor 1 For LS mode only O NO 1 YES 40504 R W E1 If 40503 is 1 value of Vhigh 0 100 For LS mode only In 0 1V units range 0 100 meaning 0 10 0V 40505 R W E1 Signal to control exhaust airflow on K3 0 or 1 For LS mode only O NO 1 YES 40506 R W E1 Reaction speed in CPs mode 0 10 For CPs mode only Range 10 0 10 fastest default value O slowest 40507 R W E1 Reaction logic in CPs mode 0 or 1 For CPs mode only O POSITIVE airflow increase if Vk2 gt set point 1 NEGATIVE airflow increase if Vk2 lt set point 40508 R W E1 Start torque 2 98 In unit 40509 R W E1 FANS OFF allowed 0 1 If 0 the ventilation can not be stopped above in alarm O NO 1 YES Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL YX TZAUERHAAN KLIMAATTECHNIEK Installation and user s manual TAC4 DG Modbus RTU 40510 40511 40512 40513 40514 40515 40516 40517 40518 40519 40520 40521 40522 40523 40524 40525 40526 40527 40528 40529 R W R W R W R W R
56. ressure alarm threshold on 40434 supply side Select reference pressure to determine alarm threshold on supply 40435 side Select reference airflow to determine pressure alarm threshold on 40436 exhaust side Select reference pressure to determine alarm threshold on exhaust 40437 side If configuration via initialisation Select initialization airflow 40254 Start initialization procedure to measure pressure 40253 Initialization can last for 1 to 3 minutes according to stabilization of working point After 1 minute the system will store the fan s calculated pressure value The operating mode register 40052 is temporarely set to 9 during this initialization phase Alarm while initializing pressure setpoint 40302 bit12 to 15 40303 bit 0 to 3 Control Activate pressure alarm status 40221 Display Reference airflow for pressure alarm supply side 40061 Pressure for pressure alarm supply side 40062 Reference airflow for pressure alarm exhaust side 40063 Pressure for pressure alarm exhaust side 40064 Status of pressure alarm on the supply and or exhaust side s 40300 bit 6 and 7 Status of external pressure alarm 40303 bit 6 6 6 Fire alarm Setup Select contact logic IN3 normally open or closed 40510 Select action off on in case of fire alarm supply side 40226 5 Select supply airflow in case of fire alarm 40511 Select action off on in case of fire alarm exhaust side 40227 3 Select exhau
57. sor prewired 53 to outdoors sensor prewired 54 NV anti freeze portection T sensor option prewired 55 supply sensor for NV KWout regulation option prewired AL1 DEFAULT ALARM B A GND 12V connection to the RC TAC4 K1 CA MODE mh K1 LS CPs MODE START STOP K2 CA MODE mh K2 LS CPs MODE 0 10V INPUT K3 CA MODE m h K3 LS CPs MODE ON K3 SAT MOOBUS IN1 Master selection IN2 dPa external pressostat digital input IN3 Fire alarm IN4 Bypass IN5 Real time clock auto manu ING ON OFF post heating NV KWout IN7 ON OFF SUPPLY if fire alarm INS ON OFF EXHAUST if fire alarm INS BOOST OUT1 0 10V OUTPUT airflow pressure OUT2 0 10V OUTPUT airflow pressure O R 1 output relay 1 SAT3 PRESSURE ALARM OR 2 output relay 2 SATS FAN ON Tea O R 3 output relay 3 SAT3 WATER PUMP for NV option o Sag jofo o OR4 output nale 4 SAT3 BYPASS STATUS 5 Ts OND OUT OUM GAO cute OUTS Nw SAT MODBUS option see installation manual SAT BAVKW option see installation manual www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU Ew AUERHAAN KLIMAATTECHNIEK 3 Regulation 3 1 Fans working modes The various working modes give the user the choice on how the airflow must be modulated according to your application In all the working modes the supply fan will opera
58. st airflow in case of fire alarm 40512 g A Control 5 Set fire alarm status 40222 Visualization p Fire alarm status 40303 bit 7 5 and 8 www AUERHAAN KLIMAATTECHNIEK NL AN Z AUERHAAN KLIMAATTECHNIEK 6 7 Bypass Setup Select outside temperature threshold to open bypass 40513 Select inside temperature threshold to open bypass 40514 Force special airflow when bypass open 40515 Select supply airflow when bypass open 40516 Select exhaust airflow when bypass open 40517 Control Force open bypass status even when conditions not met 40223 Visualization Bypass status 40084 6 8 Boost Setup enter BOOST supply airflow rate when activated 40548 Enter BOOST exhaust airflow rate when activated 40549 Control Force activation of BOOST airflow 40228 6 9 Post heating internal coil NV or KWout option Setup Select assignment value for supply air T 40425 Control De activate post heating function 40225 Display Supply air T assignment 40059 If NV option age of opening of 3 way valve 40172 If KWout option power age of KWout coil 40187 Supply air temperature T 40159 Antifrost status of internal water coil 40083 Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ANN Z AUERHAAN KLIMAATTECHNIEK 6 10 Post heating or cooling external coil SAT BA KW OPTION
59. tal entry An extra external system determining in which mode heat cool the coil must operate and delivering the information free of potential contact to the SAT TAC4 BA KW is necessary e Allows shutting down the coils via digital input For connections configuration and user instructions see installation manual MI SAT TAC4 BA KW 3 9 Time slots schedules The TAC4 DG regulation allows to configure up to 6 time slots per day For each time slot select The exhaust and the supply airflows o Working mode CA LS CPs or OFF o CA mode select the actual exhaust and supply airflow o LS mode select 8 value of the link configured as well as a age value of the unbalance between exhaust and supply airflows exhaust supply o CPs mode select 8 age value of the reference pressure as well as a age value of the unbalance between exhaust and supply airflows exhaust supply Bypass status choose either automatic see 3 7 or either force the bypass to open or close for the TS considered If post heating installed option set the assignment t for the supply air for the TS considered If post cooling installed option set the assignment t for the supply air for the TS considered Seasonal management is also possible Force bypass close between 2 dates avoid free cooling in the winter Disable the post heating feature between 2 dates avoid post heating in the summer Disable the post cooling fe
60. te according to the assigned mode and parameters The airflow of the exhaust fan will then equal to a percentage of the actual airflow of the supply fan noted EXT PUL for ratio between exhaust and supply airflows The RC TAC4 allows configuration of one of the following 4 modes 3 1 1 CA MODE 3 constant airflow assignments for the supply fan are determined by the user m h K1 m3h K2 et m3h K3 3 1 2 LS MODE The assigned supply airflow is a function of a 0 10V linear signal The user defines the link with 4 parameters Vmin Vmax m h Vmin et msh Vmax applied to the following diagram With m h Vmin lt or gt m h Vmax positive or negative link Using the advanced setup it is possible to stop the fans once the input signal value has reached a certain upper and or lower limit Wiring diagrams The pressure sensor is connected to entry K2 of the TAC4 DG circuit a Wiring to 1 circuit SSS 412V INT IN2 IN3 IN4 INS ING IN INS INS 12V j GNDOUTI OUT2 g 0 10 Vde b Wiring to several circuits in parallel zalaga eleleletelsle Telele et eleleletelalelelslele GND TS L K2 gt 0 10V signal maximum impedance allowed 1500 Q www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ZAUERHAAN KLIMAATTECHNIEK 3 1 3 CPs MODE CPs on SUPPLY air The airflow delivered by the supply fans is automatically modulated to obt
61. ter bit 0 1 in MODBUS table See 3 in table below Pare cannot be identified and the fans are stopped Press RESET using the 40250 register or with the RESET key on the TAC4 DG circuit If it occurs during initializing an alarm pressure 2 options 1 No action is taken the control will operate without pressure alarm 2 Corrective action is taken change the working point to one well located in the working zone of the fan by reducing the pressure system modifying the nominal airflow and restart the setup operation If it occurs during initializing of the assignment pressure in CPs mode A corrective action must be taken change the working point to one well located in the working zone of the fan by reducing the pressure system modifying the nominal airflow and restart the setup operation Type 4 Alarm indicating the system cannot fulfill the assignment The assignment keeping a certain airflow or a certain pressure constant cannot be fulfilled because the upper or lower limit of the fan s working zone has been reached See 4 in table below 40301 register bit 8 to 15 and 40302 register bit 0 to 11 Type 5 Alarm indicating a data failure in the control circuit Crucial data from the circuit board has been lost Try a TOTAL RESET of the data using the 40251 register If still not solved send the defect TAC4 DG circuit for reprogramming See 5 in table below 40301 register bit 0 1 Type 6 Fire Alarm
62. the first invalid data address or invalid value 4 4 MODBUS values All values are signed values As usual all modbus words are in big endian byte order Some registers act as bitmaps with 16 status bits Some values are 32 bit They are transfered as two 16 bit registers first low word then high word When reading the master must combine two 16 bit words into one 32 bit value With shift Val32 long HIGH lt lt 16 LOW With math Val82 HIGH 65536 LOW For example Reg1 33041 Reg2 13 Val32 885009 When writing a 32 bit parameter the controller first buffers the low word Then when the high word is written the 32 bit parameter is updated This low word buffer is shared for all 32 bit parameters www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU Ew AUERHAAN KLIMAATTECHNIEK 4 5 Write cycles limitation The controller stores all setup parameters and some control parameters in non volatile EEPROM memory to protect against power failure This EEPROM memory has an endurance of 100 000 write cycles Therefore these parameters should not be changed too often Writing a parameter with the same value is not a change Changing a parameter once per hour would result in 8760 writes per year or 100 000 writes in 11 years Changing a setup parameter once per minute would result in 100 000 writes in only 69 days Those parameters are marked as E1 in the MODBUS map Some paramet
63. uit SES le GND OUT4 OUTS NV VO Vanne 3 voies GND blue wire 3 wegkraan NV red wire 3 way valve VO brown wire Wiring of supply air T sensor to TAC DG circuit 12V IN2 IN3 IN4 INS IN6 IN7 IN8 IN9 12V GND T S GNDOUT1 OUT2 Sonde T T Sonde T sensor e witching of a relay to control the circulator ST3 O R 3 rel Circulateur Circulateur OFF ON Installation and user s manual TAC4 DG Modbus RTU www AUERHAAN KLIMAATTECHNIEK NL Installation and user s manual TAC4 DG Modbus RTU ZAUERHAAN KLIMAATTECHNIEK e Possibility to stop the post heating with an external contact 12V INi IN2 INS IN4 INS ING IN7 INS IN9 12V Contact closed post heating OFF Contact open post heating ON 3 8 Regulation for external coil s SAT TAC4 BA KW option Via option SAT TAC4 BA KW it is possible to control one or two external from the unit heat exchanger s e One heating coil One water cooling coil e One heating cooling coil reversible coil e One heating coil one cooling coi separate e One electrical coil One electrical coil one cooling coil SAT TAC4 BA KW Controls the coils capacity by keeping a supply air temperature constant equals to the assignment This assignment can be defined for each coil when configuring the setup e Controls the water coils antifrost protection e Triggers command for circulator s e Cooling Heating mode control by digi
64. ventilatoren luchtverdeelsysteem Auerhaan Cubus serie Koolair Luchtroosters Lemmens Verwarming FlaktWoods ventilatie units en diffusers en ventilatie Dakventilatoren Platinastraat 21 klimaattechniek auerhaan nl www auerhaan klimaattechniek nl 8211 AR Lelystad Z_AUERHAAN Postbus 22 _ 31 0 320 28 61 81 8200 AA Lelystad Q 31 0 320 28 61 80 KLIMAATTECHNIEK
65. y Airflow 1 K1 Pos l Range 0 9999 Airflow selection For CA mode only Airflow 2 K2 Pos ll Range 0 9999 Airflow selection For CA mode only Airflow 3 K3 Pos lll Range 0 9999 Pressure alarm selection For CA and LS mode only Pressure alarm selection O No pressure alarm 1 Pressure alarm selected Pressure alarm data For CA and LS mode only Pressure offset on supply increase of pressure In Pa units Pressure alarm data For CA and LS mode only Pressure offset on exhaust increase of pressure In Pa units Pressure alarm data For CA and LS mode only Reference flow on supply for pressure alarm In m3 h units Pressure alarm data For CA and LS mode only Pressure at reference flow on supply In Pa units Pressure alarm data For CA and LS mode only Reference flow on exhaust for pressure alarm In m3 h units Pressure alarm data For CA and LS mode only Pressure at reference flow on exhaust In Pa units Signal link data For LS mode only Minimum signal value Vmin In 0 1V units 0 100 meaning 0 10 0V Signal link data For LS mode only Maximum signal value Vmax In 0 1V units 0 100 meaning 0 10 0V Signal link data For LS mode only Airflow at Vmin In m3 h units Signal link data For LS mode only Airflow at Vmax In m3 h units Sleep mode reduction on K3 For LS CPf and CPs mode only reduction in of the nominal set point In unit 0 9 35999 0 max

Installation and user`s manual TAC4 DG + Modbus RTU

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