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MI Regulation TAC4 DG + MODBUS GB

1. 30 7 2 uoco BRO TA E S 30 7 2 1 RO TAOTE MA ee ee ER 30 722 MODBUS S MASO eee ee irar de oria De on EEE EE 30 8 Usewlhoexderrdl conDlacls sarisi aaea aaa AEAEE AEEA 30 9 Detailed MODBUS table 9 7 2 9 8 9 8 1 9 8 2 31 Generalin EE Ec m 31 jd US VAN ZAPU Use ae rre a eeeernneene 31 Soy M 34 ER 0 2 i NI NN CEN MEM Mud OIM e Nu NN dn 36 ied TO m T MU Tm 37 ADVANCED SETUP parameters E nnne nnne nnne nnne nns 99 KOES N eine die 42 Time scheduler 42 Time scheduler MADOINO 43 SICCDBNEUE EEE 44 Season management SIT HOLDIEO 2s ec coca soa Sp SE Era RE ac SUE AE YEARS 44 Season management MAMPI ccce uus o Deme te vedas dicks dan itae siete oe aues ede 44 1 Functionalities of the regulation The TACA 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 contro
2. adno 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 Ed E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 E1 Analog output OUT 1 Selection of the parameter to be sent on OUT1 02m3 h F1 1 Pa F1 2 m3 h F2 3 Pa F2 4 m3 h F3 5 Pa F3 62m3 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 62m3 h F4 7 Pa F4 Post ventilation Activation of the post ventilation O NO 12 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 0 NO EES Fan run time To activate a SERVICE alarm after a predetermined time 0 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 2 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 TACA Airflows pressures and other parameters are
3. 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 O 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 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 Di 16 Wiring diagram 12V INT IN2 IN3 IN4 INS IN6 IN7 IN8 INQ 12V IN3 12V fi
4. b Network wiring SAT MODBUS 1 SAT MODBUS 2 3 BSS Say SiS olololololo olololololo A B A B GND A B GND MASTER GND 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 specifications 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 ino x 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
5. Postheat SAT KW option power of the electric coil 96 In units range 0 100 meaning 0 100 9 3 Control ELITS 40200 H Selection of the control master who will determine speed 0 1 2 0 RC TAC4 determines it 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 0 STOP 1 LOW pos l 2 MEDIUM pos Il 3 HIGH pos III 40204 R W R Supply airflow selection via Modbus only if 40200 3 min max of Range 0 9999 unit O 40205 R W R Exhaust airflow selection via Modbus only if 40200 3 min max of Range 0 9999 unit 0 40221 H 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 0 or 1 0 Bypass auto based on measured T4 and T 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 RAN H Fire alarm supply airflow 0 or 1 0 Supply fan is stopped in fire alarm 1 Supply fan is running in fire alarm A TAC4 DG C2 Heat recovery 34 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 Ed E1 E1 E1 5 E1 ET Fire alarm exhaust airflo
6. Red ON Alarm j i SENSOR 4 status 11 ALARM T Red ON Alarm SENSOR 5 status 12 ALARM Red ON j 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 pressure alarm 3 Stopping of the fans in function of entries IN7 IN8 and or the 40226 and 40227 registers 2 TAC4 DG Heat recovery 18 P LEMMENS AIR MOVEMENT COMPANY 3 10 3 Wiring diagrams Option Optie SAT3 Sp cifications voir manuel d installation SAT3 Specificaties zie SAT3 handleidingsmanued Specifications see SAT3 installation manual AL1 OFF AL APa or 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 MOTOR CONTROL CABLES N TE ff if URBE 8 z 19 Installation and user s manual TAC4 DG MODBUS RTU 3 12 Wiring the SAT MODBUS a Wiring one unit SAT MODBUS A B GND A B GND MODBUS MASTER GND
7. 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 When plugged in position OR1 OR2 status of Fan On warning and of Pressure alarm warning and or e When plugged in position ORS ORA 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 Installation and user s manual TAC4 DG MODBUS RTU 2 General information 2 4 General schematic of the HRg units CONDOR D Main switch for power supply fans and control Main switch for power 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 10096 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 TAC4 DG e Heat recovery 6 2 2 Schematic of the T s
8. max of If 40515 1 Supply airflow when bypass is open unit 0 In m3 h units 40517 R W E1 Bypass data min max of If 40515 1 Exhaust airflow when bypass is open unit 0 In m3 h units 40518 R W E1 KWin option 99 99 Preheat setpoint of the air air exchanger antifreeze protection In 0 1 C units Range 99 99 meaning 9 9 9 9 C 40519 R W E1 Antifreeze air air exchanger 0 or 1 Activation of the antifreeze protection O NO 1 2 YES 40520 RAN E1 Antifreeze air air exchanger 10 30 T LOW Antifreeze T HIGH is raised if required to meet t he T HIGH gt T LOW 1 requirement In 0 1 C units Range 10 30 meaning 1 3 40521 R W E1 Antifreeze air air exchanger 10 50 T HIGH T HIGH must be gt TLOW 1 In 0 1 units Range 10 50 meaning 1 0 5 0 C 40522 R W E1 Antifreeze air air exchanger 0 or 1 Allow supply airflow to be stopped if T3 lt TLOW O NO 12 YES 40523 R W E1 KWin option 1 100 Preheat KWin PID PB Gain 100 PB In units 40524 R W E1 KWin option 0 9999 Preheat KWin PID Ti In sec units 40525 R W E1 KWin option 0 9999 Preheat KWin PID Td In sec units 40526 R W E1 NV option 1 10 Postheat NV speed Range 10 1 10 fastest 1 slowest 40527 RAN E1 KWout option 1 100 Postheat KWout PID PB Gain 100 PB In units 40528 R W E1 KWout option 0 9999 Postheat KWout PID Ti In sec units 40529 R W E1 KWout option 0 9999 Postheat KWout PID Td In sec units
9. 40064 H E1 Pressure alarm data 3 0 Pa Exhaust reference pressure for pressure alarm in Pa 40065 H E1 Fan 1 Supply 1 flow 0 max of unit 40066 H E1 Fan 1 pressure 0 max of unit 40067 H E1 Fan 1 torque Range 0 255 127 5096 0 255 40068 H E1 Fan 1 RPM 0 6000 40069 H E1 Fan 2 Supply 2 flow 0 max of unit 40070 H E1 Fan 2 pressure 0 max of unit 40071 H Fan 2 torque Range 0 255 12725095 0 255 40072 H E1 Fan 2 RPM 0 6000 40073 H 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 H E1 Fan 4 Exhaust 2 flow 0 max of unit 40078 H E1 Fan 4 pressure 0 max of unit 40079 H E1 Fan 4 torque Range 0 255 127 5096 0 255 40080 H E1 Fan 4 RPM 0 6000 40081 H E1 working hours of the unit 0 999999 40082 RUN TIME xxxxxx h 32 bit value in 2 words 40083 H E1 Antifreeze status 0 10r2 eon 1 antifreeze of the air air heat exchanger is activated 2 antifreeze of the warm water heat exchanger is activated 40084 H E1 Bypass status 0 or 1 O CLOSED 1 OPEN 40085 H E1 CTin option Damper status 0 10r2 0 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 K
10. 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 Select supply airflow in case of fire alarm 40511 Select action off on in case of fire alarm exhaust side 40227 Select exhaust airflow in case of fire alarm 40512 Control Set fire alarm status 40222 Visualization Fire alarm status 40303 bit 7 and 8 25 Installation and user s manual TAC4 DG MODBUS RTU 6 7 Bypass Setup Select inside temperature threshold to open bypass 40514 Select supply airflow when bypass open 40516 405017 Control Visualization 6 8 Boost Setup 40548 Enter BOOST exhaust airflow rate when activated 40549 Control 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 1 405 Display 40059 If NV option age of opening of 3 way valve 40172 40187 Supply air temperature T 40159 40083 TAC4 DG e Heat recovery 26 e 6 10 Post heating or cooling external coil SAT BA KW OPTION Setup _ Choose external coil type 1 11 1 1 1111 4050 Enter supply airflow setpoint temperature for heating 40425 ECCE Control _ Disable post heating 40225 Disable post cooling 40229 4
11. 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 parameters 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 40020 Visualization Read only 40050 Shows actual values of a number of setup 40150 parameters and u nit parameters flows pressures inputs and outputs 40300 Alarms Read only Bitmap with alarm flags Read and write 40500 Advanced Setup 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 details on these registers or for complete information o
12. alarms per register Bit is 1 if alarm is active Read only 40300 Bit 0 ALARM PROGRAM ERROR 0 65535 Bit 1 ALARM DATA ERROR Bit 2 ALARM FAN Bit 3 ALARM FAN2 Bit 4 ALARM FAN3 Bit 5 ALARM FAN4 Bit 6 ALARM PRESSURE Bit 7 ALARM PRESSURE F3 Bit 8 ALARM T1 OPEN Bit 9 ALARM T1 SHORT Bit 10 ALARM T2 OPEN Bit 11 ALARM T2 SHORT Bit 12 ALARM T3 OPEN Bit 13 ALARM T3 SHORT Bit 14 ALARM T4 OPEN Bit 15 ALARM T4 SHORT 40302 Bit 0 ALARM LS FAN 3 LOW 0 65535 Bit 1 ALARM LS FAN 3 HIGH Bit 2 ALARM LS FAN 4 LOW Bit 3 ALARM LS FAN 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 CA FAN 4 LOW Bit 11 ALARM CA FAN 4 HIGH Bit 12 ALARM PA INIT F1 NOT STAB Bit 13 ALARM PA INIT F3 NOT STAB Bit 14 ALARM PA INIT F1 TOO LOW Bit 15 ALARM PA INIT F3 TOO LOW Accepted values TAC4 DG Heat recovery 36 40303 R E1 ALARM PA INIT NOT ACHIEVED 0 65535 Bit 1 ALARM PA INIT F3 NOT ACHIEVED Bit 2 ALARM PA INIT F1 TOO HIGH Bit 3 ALARM PA INIT F3 TOO HIGH Bit 4 ALARM MAINT WARN Bit 5 ALARM FATAL Bit 6 ALARM DPA Bit 7 ALARM FIRE Bit 8 ALARM END OF FIRE ALARM Bit 9 ALARM VLOWERVLOW Bit 10 ALARM VHIGERVHIGH Bit 11 ALARM PREHEAT REDUCED Bit 12 ALARM STOP Bit 13 ALARM REDUCED Bit 14 ALARM AF STOP Bit 15 A
13. application UV light 7 2 Use of RC TACA 7 2 1 RC TACA 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 TAC4 standard features are then enabled For more information on its use refer to the 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 VAN TAC4 DG Heat recovery 30 9 Detailed MODBUS table Legend Read Write R Read only R W Read and Write Regi
14. 0230 Display 40059 If BA or BA option age opening of 3 way valve 40174 If KWext option actual age of maximum capacity of KW coil 40188 Antifrost status of external water coils 40088 6 11 Run time and maintenance alarms Setup Display run time on RC TAC4 40535 Hour count limit for maintenance alarm 40537 Hour count limit for maintenance alarm with fan stop 40540 Control RESET hour count 40252 Display Hour count of unit 0084 Status of maintenance alarm 40303 bit 4 and 5 6 12 Operating with time tables P LEMMENS AIR MOVEMENT COMPANY 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 th e status of the bypass Setup See MODBUS 9 7 table below 41000 41417 Control 2 Installation and user s manual TAC4 DG MODBUS RTU 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 59 8 below 41800 41803 Ente
15. 0V K3 Analog voltage 0 100 0 10 0V Temperature in 0 1 C units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T 2 in 0 1 units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T 9 in 0 1 C units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T4 in 0 1 units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T 5 in 0 1 C units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T7 in 0 1 C units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Temperature T 8 in 0 1 C units Range 990 990 meaning 99 0 99 0 C 999 means open circuit 999 means short circuit Status of digital outputs on the TAC4 DG circuit block 0 Bitmap with 1 bit per input O OFF 1 ON Bit 0 ALT alarm 1 alarm Bit 1 BYPASS 1 0 closed 1 open Bit 2 BYPASS 2 not used always on Bit 3 CT 0 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 s
16. 1 E1 E1 E1 E1 E1 E1 E1 E1 Control on supply or exhaust selection For CPs mode only Control pressure on the supply and or exhaust flow O on supply 1 on exhaust 2 on supply and on exhaust Constant pressure data For CPs mode only 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 Constant pressure data 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 Cooling setpoint For BA and BA options In 0 1 C units Range 0 999 meaning 0 99 90 0 is OFF Constant pressure data For CPs mode only Reference flow 2 used for measuring pressure exhaust fan flow if CPs on SUP EXH In m3 h units Constant pressure data 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 ADVANCED SETUP parameters Stop the fans in pressure alarm For CA and LS mode only O NO EYES Stop the fans if signal on K2 is lower than Vlow For LS mode only 0 1 YES If 40501 is 1 value of Vlow For LS mode only In 0 1V units range 0 100 meaning 0 10 0V Stop the fans if signal on K2 is higher than Vhigh For LS mode only 0 1 YES If 40503 is 1 value of Vhigh For LS mode only In 0 1V units range 0 100 me
17. 2 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 40517 9 BOOST registers 40548 and 40549 10 MODBUS registers 40204 and 40205 40088 R E1 Antifreeze status of the external exchangers 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 H E1 Current Supply T heating setpoint in 0 1 units 0 999 Range 1 999 meaning 0 1 99 9 C 0 is supply heating OFF an 7 32 40090 40150 40152 40153 40154 40155 40156 40157 40158 40159 40161 40162 40168 H H E1 E1 E1 E1 E1 Ed E1 E1 E1 E1 E1 E1 E1 Current Supply T cooling setpoint in 0 1 C units Range 1 999 meaning 0 1 99 96 0 is supply cooling OFF Status of digital inputs on the TAC4 DG circuit 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 IN1 Bit 4 IN2 Bit 5 IN3 Bit 6 INA Bit 7 IN5 Bit 8 IN6 Bit 9 IN7 Bit 10 IN8 Bit 11 IN9 Bit 12 IN10 Bit 13 IN11 K1 Analog voltage K1 is a digital input but it is shown here for completeness 0 100 0 10 0V K2 Analog voltage 0 100 0 10
18. 40434 R W E1 Pressure alarm data min max of For CA and LS mode only unit Reference flow on supply for pressure alarm In m3 h units 40435 R W E1 Pressure alarm data 0 max of unit For CA and LS mode only Pressure at reference flow on supply In Pa units 40436 R W E1 Pressure alarm data min max of For CA and LS mode only unit Reference flow on exhaust for pressure alarm In m3 h units 40437 R W E1 Pressure alarm data 0 max of unit For CA and LS mode only Pressure at reference flow on exhaust In Pa units 40438 R W E1 Signal link data 0 100 For LS mode only Minimum signal value Vmin In 0 1V units 0 100 meaning 0 10 0V 40439 R W E1 Signal link data 0 100 For LS mode only Maximum signal value Vmax In 0 1V units 0 100 meaning 0 10 0V 40440 R W E1 oignal link data min max of For LS mode only unit Airflow at Vmin In m3 h units 40441 R W E1 oignal link data min max of For LS mode only unit Airflow at Vmax In m3 h units 40442 RAW E1 Sleep mode reduction on K3 1 100 For LS CPf and CPs mode only reduction in of the nominal set point In unit entreen 40443 40444 40446 40447 40448 40449 9 6 Register Read Type Description Accepted values 40500 40501 40502 40503 40504 40505 40506 40507 40508 40509 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 E
19. 5 E1 Parameters for Saturday Timesegment 6 E1 Parameters for Sunday Timesegment 1 E1 Parameters for Sunday Timesegment 2 43 0 999 0 999 0 10r 2 Installation and user s manual TAC4 DG MODBUS RTU 41380 41387 R W E1 Parameters for Sunday Timesegment 3 41390 41397 R W E1 Parameters for Sunday Timesegment 4 41400 41407 R W E1 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 values 418xx Start day Start date for disable of the feature 15 3 day of the month 418xx 1 Start month Start date for disable of the feature 1512 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 112 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 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 an
20. 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 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 16 LOW With math Val82 HIGH 65536 LOW For example Reg1233041 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 21 Installation and user s manual TAC4 DG MODBUS RTU 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
21. ALWAYS ONE STEP AHEAD TACA DG MODBUS RTU PAN P LEMMENS AIR MOVEMENT COMPANY ALWAYS ONE STEP AHEAD TACA DG MODBUS RTU Installation and user s manual PAN P LEMMENS AIR MOVEMENT COMPANY TABLE OF CONTENTS 1 Functionalities of the regulation e eeeee nene nnne nnne n nnn 5 AMORC ste At 6 2 1 General schematic of the HRg units esos ix iiiter eatur Re aree tte tie 6 2 2 Schematic of the T sensors positioning in the HRg unit ss 7 2 9 Label located inside the cover of the control panel 3 7 3 8 3 1 Fane WOKING MI roro s NER EET m re 8 3 1 1 ANIO DES V 8 gt MODE EE 8 sko CrS E E E E A EE ee ee 9 MODE EE E E eee eee A 9 3 2 BYPASS T rclioB r cobling ssen ni en iaeiaiai ud eon se reb ded 9 3 9 BOOST Ce te de de Li toi 10 3 4 Opening closing of dampers CT option at inlet ss 10 3 5 Heat exchanger antifrost protection system sise 11 3 5 1 Protection antifreeze via pulse flow reduction 11 3 5 2 Antifrosting the heat exchanger with 1 pre heating KWin option VU 11 3 6 KWout post
22. LARM POSTHEAT SETPOINT 40304 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 values 40400 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 1 31 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 0 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 herange 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 la
23. LS IF CPs applied to one airflow side supply or exhaust Select derated airflow for position lll 40442 dM manual configuration Select assignment value to be kept constant 40446 If configuration via initialization procedure Select initialization airflow 40254 If manual configuration Enter setpoint value to be kept constant in the exhaust airflow 40449 Enter nominal supply airflow for initialization procedure 40254 EU Alarm while initialization procedure of setpoint pressure value 40302 bit12 to 15 40303 bit O to 3 Control 40200 Select ventilation position OFF ou III 40201 6 3 Viewing of fan data 40052 Ventilation Position OFF 1 Il HI 40053 Supply airflow assignment Z Exhaust airflow assignment 40057 _Actual airflow on supply fant Actual pressure on supply fan 1 40066 Actual airflow on supply fa 2 Actual pressure on supply fan 2 40070 _Actual airflow on exhaust fan 1 Actual pressure on exhaust fan 1 40074 Actual airflow on exhaust fan 2 0 Actual pressure on exhaust fan 2 40078 6 4 Viewing temperatures Inlet Temperature of fresh air from outside T 40155 Inlet Temperature of stale air from the interior T2 40156 _ Exhaust air temperature after heat exchanger towards outside T3 Water coil temperature NV option T4 40158 Hot water coil temperature BA ou BA option T7 40161 Temperature s
24. 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 20r 3 0 8 1 LOW I 2 MEDIUM II 3 HIGH III 40054 R E1 Current setpoint 0 9999 Range 0 9999 40055 E1 Current Setpoint SET VAL unit 0 1or2 02m3 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 H E1 Current setpoint for extraction fans F3 F4 0 max of unit Can be m3 h Pa or 0 1V unit 40058 H E1 Preheat option KWin 99 99 Temperature setpoint in 0 1 C units Range 99 99 meaning 9 9 9 9 C 31 Installation and user s manual TAC4 DG MODBUS RTU 40059 H 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 9 0 means supply heating and cooling are OFF 40060 H E1 Current Exhaust Supply ratio unbalance between exhaust and 5 999 supply flows in 96 Range 5 999 40061 H E1 Pressure alarm data 0 max of unit Supply reference flow for pressure alarm in m3 h 40062 H E1 Pressure alarm data 0 max of unit oupply reference pressure for pressure alarm in Pa 40063 H E1 Pressure alarm data 1254 m3 h Exhaust reference flow for pressure alarm in m3 h
25. amper 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 Installation and user s manual TAC4 DG MODBUS RTU Operating description Opening of 10096 by pass if all following conditions are met Outside T sensor T1 inside T sensor T2 2 1 C Outside T sensor T1 5155 Inside T sensor T2 gt 22 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 14 C Inside T sensor T2 lt 20 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 when 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 all
26. aning 0 10 0V Signal to control exhaust airflow on K3 For LS mode only 0 1 YES Reaction speed in CPs mode For CPs mode only Range 10 0 10 fastest default value Reaction logic in CPs mode For CPs mode only O POSITIVE airflow increase if Vk2 gt set point 1 NEGATIVE airflow increase if Vk2 lt set point Start torque In unit FANS OFF allowed If O the ventilation can not be stopped above in alarm 0 1 YES O slowest 39 0 1 or 2 min max of unit 0 100 0 999 min max of unit 0 100 0 or 1 0 or 1 0 100 0 or 1 0 100 0 or 1 0 10 0 or 1 2 98 0 or 1 Installation and user s manual TAC4 DG MODBUS RTU 40510 E1 Fire alarm normally open or closed contact selection 0 or 1 0 normally open N O 1 normally closed N C 4051 1 R W E1 Fire alarm airflow selection min max of airflow for supply unit O In m3 h units 40512 R W E1 Fire alarm airflow selection min max of airflow for exhaust unit O In m3 h units 40513 R W E1 Bypass data 50 270 T3 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 40514 RAW E1 Bypass data 60 280 T2 value T2 must be gt T1 1 In 0 1 C units Range 60 280 meaning 6 0 28 0 C 40515 R W E1 Bypass data 0 or 1 To force airflows when bypass is open O NO 1 YES 40516 R W E1 Bypass data min
27. anti frost duty the control will modulate the in and out airflows as follows a If T 1C and T floor T 1 5 CO for more than 5 minutes If CA and LS mode reduction of in and outgoing airflows to 6696 of the assigned airflows If CPs Mode reduction to 75 of the assigned pressure This setup is maintained during 15 minutes after which the 10096 airflow pressure assignment is reestablished Actions on RC if connected Actions on 4 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 lt 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 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 Its 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 regul
28. aster selection IN2 dPa external pressostat digital input IN3 Fire alarm IN4 Bypass IN5 Real time clock auto manu IN6 ON OFF post heating NV KWout IN7 ON OFF SUPPLY if fire alarm IN8 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 O R 2 output relay 2 SAT3 FAN ON O R 3 output relay 3 SAT3 WATER PUMP for NV option O R 4 output relay 4 SAT3 BYPASS STATUS SAT MODBUS option see installation manual SAT BA KW option see installation manual Installation and user s manual TAC4 DG MODBUS RTU 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 operate 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 mh K1 m3h K2 et mh 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 m3hzVmin et m hzVmax appl
29. ation 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 e tis possible to stop the post heating with an external contact IN6 see detail in the 3 6 1 or via the 40225 register e Setpoint alarm see details in section S 3 9 1 and 3 9 2 e Sensor alarms see details in section 3 9 1 and 3 9 2 dro 3 6 1 Wiring diagrams e Wiring the supply T sensor to the TAC DG board Sp ESESESESESESESIESESESIES ES ES Bas olololo olo lo o eojo oj o j o o o J oo o e o o K1 K2 K3 12V 12V INT IN2 IN3 4 INS IN7 IN8 12V GND T 5 GNDOUT1 OUT2 Sonde T T Sonde T sensor Possibility to stop the post heating with an external contact 12V INT 2 IN3 IN4 INS 6 IN7 8 INQ 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 115 set using the 40425 register Control features of the TAC4 DG e Monitoring the 3 way va
30. close 2 Bypass forced to open Parameters for Monday Timesegment 1 3 Parameters for Monday Timesegment 2 E1 Parameters for Monday Timesegment 3 E1 Parameters for Monday Timesegment 4 E1 Parameters for Monday Timesegment 5 E1 Parameters for Monday Timesegment 6 E1 Parameters for Tuesday Timesegment 1 E1 Parameters for Tuesday Timesegment 2 E1 Parameters for Tuesday Timesegment 3 E1 Parameters for Tuesday Timesegment 4 E1 Parameters for Tuesday Timesegment 5 E1 Parameters for Tuesday Timesegment 6 E1 Parameters for Wednesday Timesegment 1 E1 Parameters for Wednesday Timesegment 2 E1 Parameters for Wednesday Timesegment 3 E1 Parameters for Wednesday Timesegment 4 E1 Parameters for Wednesday Timesegment 5 E1 Parameters for Wednesday Timesegment 6 E1 Parameters for Thursday Timesegment 1 E1 Parameters for Thursday Timesegment 2 E1 Parameters for Thursday Timesegment 3 EJ Parameters for Thursday Timesegment 4 E1 Parameters for Thursday Timesegment 5 E1 Parameters for Thursday Timesegment 6 E1 Parameters for Friday Timesegment 1 E1 Parameters for Friday Timesegment 2 E1 Parameters for Friday Timesegment 3 E1 Parameters for Friday Timesegment 4 E1 Parameters for Friday Timesegment 5 E1 Parameters for Friday Timesegment 6 E1 Parameters for Saturday Timesegment 1 Parameters for Saturday Timesegment 2 E1 Parameters for Saturday Timesegment 3 E1 Parameters for Saturday Timesegment 4 E1 Parameters for Saturday Timesegment
31. e modified using ADVANCED SETUP for ADVANCED SETUP manual see www lemmens com Antifreeze diagram LED AF ON M 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 1 If necessary this value can be changed using theadvanced setup feature see www lemmens com 11 Installation and user s manual TAC4 DG MODBUS RTU TACA DG regulation antifrost functions e A solid sate relay controlled by the TAC4 DG regulation controls the coil s 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 e 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
32. ection of the failure it is necessary to perform a RESET via the 40250 register or via the RESET button on the TAC4 DG circuit oee 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 necessary to perform a RESET via the 40250 register or via the RESET button on the TACA 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 TACA DG circuit See 11 in table below 40301 register bit 0 1 17 Installation and user s manual TAC4 DG MODBUS RTU 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
33. ensor alarm 40300 bit 8 to 15 40301 bit 0 to 7 TAC4 DG e Heat recovery 24 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 pressure 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 otatus of pressure alarm on the supply and or exhaust side s
34. ensors positioning in the HRg unit PAN P LEMMENS AIR MOVEMENT COMPANY To allow easier identification of the temperature sensors 4 different wire colors are used T1 black wire T2 white wire T3 blue wire T4 amp T5 green wire 2 3 Label located inside the cover of the control panel 3 BYPASS MOTOR CONTROL CABLES 4 3 2 1 HV KWo KWo GND VI EL pc LL LL u OUT gt IN IN OUT BYPASS SAT MODBUS SAT BA KW SAT MODBUS Rx Tx e RELAY 169 oo GND T7 T8 WP WP GND OUT OUT amp OUTS 12V INI Xe SAT BA KW eo KI CES FRE EE B A GND 12V K2 K3 12V 12V INT IN2 IN3 4 INS 6 IN7 INS INS 12V GND T 5 GNDOUT1 OUT2 GND OUT4 OUTS NV K1 K2 f K3 BYPASS output to bypass actuator prewired CT output to CT actuator s option prewired KWout output for KWout power regulation option prewired KWin output for KWin power regulation option prewired 81 from outdoors T sensor prewired S2 from indoors T sensor prewired 53 to outdoors T sensor prewired S4 NV anti freeze portection T sensor option prewired S5 supply T sensor for NV KWout regulation option prewired AL1 DEFAULT ALARM B A GND 12V connection to the RC TAC4 K1 CA MODE m h K1 LS CPs MODE START STOP K2 CA MODE m h K2 LS CPs MODE 0 10V INPUT K3 CA MODE m h K3 LS CPs MODE ON K3 IN1 M
35. eps to connect the RC TAC4 to the CB4 TAC4 DG 1 1 Open the RC TACA 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 HC TAC4 wiring terminals 29 Installation and user s manual TAC4 DG MODBUS RTU 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 TACA REC to the TAC4 DG circuit TAC4 DG RC TAC4 olololo z kd O z iE olololo olololo A GND 12V B A GND 12V i Cable specifications e Recommended cable category 5 shielded twisted pair FTP cable with a section of 0 26 0 50 mm 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 e 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 e Ifthe HRg unit is installed outside select a suitable cable for outdoor
36. ere ee ee ee ee eee 29 ame eee eee 23 NEC MODE vr A 24 6 3 Ea EDELE 1e E cT 24 6 4 MAC WIG Temperatures eda mM 24 6 5 de at 25 6 6 Fr MSY NAMING E RTI 25 6 7 zs pe 26 6 8 BOOST PR 26 6 9 Post heating internal coil NV or KWout option sise 26 6 10 Post heating or cooling external coil SAT BA KW OPTION 27 6 11 Run time and maintenance alarms si nenne nne nenne rne nnne nnns 27 6 12 Operating with time tables ccceccccsscccsseeeceeeeceeeeceeeeeseeeseeeeseeeessueeesueessaeesseueessaeeeseusessaeeeseneesses 27 60 13 Seasonal prograrmimirigr us ton epa tque dept ern Iuda que ele Seu C Hi qud sSadsaen iandcdadsdeddennsendsenecaedaaadecs 28 ur MEME PP 28 1 Use RC TAC4 remote contol 5 25 29 7 1 Connecting the RC TAC4 to the CB4 TAC4 DG circuit sise 29 7 1 1 Open the RG TACA NAM a one 29 7 1 2 Wiring diagram to connect the RC TAC4 REC to the TAC4 DG
37. heating electrical coil control option 12 3 6 1 L ATLAS MO A 13 3 7 Post heating NV option regulation 1 eeeeeieeei eerie eene nennen nnne nnn nnn nnn nnn nnn nnns 13 3 7 1 Wing ACTA eed 14 3 8 Regulation for external coil s SAT TAC4 BA KW option 15 3 9 Tire SIOIS ee rM NINE 15 EE O 16 E 16 SO D IER Tem 18 9199 WN CA ON GEITIS Sesetscaest E A de MG RUM URN E IE MD 19 3 11 Plugging the SAT MODBUS satellite seniors 19 242 Wiring the SAT d rien end ER Iv EU Se ERa LEY mener anre osa uen Erit ie EEE Eee TR en 20 4 Definition of the MODBUS RTU communication eeeeeseeeee eene eene enne nennen nnn nnnm nnn nnn 20 4 1 MODBUS PRO E O E EE EE NEEE 20 4 2 MODBU AR AE E E E 21 4 3 MODS een mm 21 4 4 PM VAES e E AER R 21 4 5 IMA MEL ON err p 22 5 Modbus S 22 6 MSE MODBUS CONTAINS t M 22 6 1 MODES en ee ee ee ee ee ee 22 6 2 FAM SM fodit e MMO oz PC PTS 29 6 2 1 CA MODE airflows are continuously being sent by MODBUS UV 23 622 CA Mode SO eee
38. hidden O NO 1 YES MODBUS configuration Modbus Address of the TACA circuit Access code for RC TACA 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 3 BA BA 2 exchangers 4 BA 1 exchanger for heating and cooling 5 KW 6 KW BA BA option Colling BA speed Range 10 1 10 fastest 1 slowest 41 0 7 0 7 0 or 1 0 9999 0 or 1 0 or 1 0 or 1 0 lt 999999 0 1 0 999999 0 or 1 1 247 0 or 1 0 9999 min max of unit O min max of unit O 0 6 Installation and user s manual TAC4 DG MODBUS RTU 40552 E1 BA Antifreeze T threshold 0 999 In 0 1 C units Range 0 999 meaning 0 99 90 BA control enters 15min antifreeze cycle if T7 this threshold and OUT7 3V 40553 R W E1 BA Antifreeze T threshold 0 999 In 0 1 C units Range 0 999 meaning 0 99 9C BA control enters 15min antifreeze cycle if T8 lt this threshold and OUT8 3V 40554 E1 NV Antifreeze T threshold 0 999 In 0 1 C units Range 0 999 meaning 0 99 90 BA control enters 15min antifreeze cycle if T4 lt this thres
39. hold 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 values 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 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 4100120 OFF mode not used 0 9999 If 4100121 CA mode setpoint for supply airflow in m3 h units Range 0 max of unit If 4100122 LS mode Percentage of nominal setpoint if 4050521 setpoint only for supply in units Range 0 100 If 4100123 CPs mode Percentage of nominal setpoint if 4044322 setpoint only for supply in units Range 0 100 41xx4 Setpoint 2 If 4100120 OFF mode not used 0 9999 If 4100121 CA mode setpoint for exhaust airflow in m3 h units Range 0 max of unit If 4100122 LS mode if 4050520 Exhaust Supply flow ratio Range 5 999 if 40505 1 Percentage of nominal setpoint for extraction Range 1 100 in units If 4100123 CPs mode if 4044320 or 1 Exhaust Supply flo
40. ied to the following diagram With m3hzVmin lt or gt m hzVmax 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 SEE EMESEJEJESESESESEJSIESIESM Be Bae o o o o ololololololololololo loolo ololo Ki K2 K3 12V 12V INT 2 IN3 IN4 INS 6 IN7 8 12V GND T 5 GNDOUT1 OUT2 b Wiring to several circuits in parallel 2 34 KR 12V 12V INT IN2 3 IN4 INS ING IN8 IN9 12V GND T 5 GNDOUT OUT2 K1 K3 12V 12V IN1 IN2 IN3 IN4 INS ING IN7 IN9 12V GND T 5 GNDOUT OUT2 K2 0 10V signal maximum impedance allowed 1500 Q Po res A 3 1 3 CPs MODE CPs on SUPPLY air The airflow delivered by the supply fans is automatically modulated to obtain 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 p
41. ller 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 10096 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 option can be combined with TAC4 DG controller RC TAC4 Option remote control and visualization of the parameters please refer to TAC4 DG RC TACA installation and user s manual for detailed information SAT TACA 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
42. lve 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 4 then the 3 way valve is opened and contact for circulator is closed during 15 minutes e tis 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 S 3 9 1 and 3 9 2 e Sensor alarms see details in section 3 9 1 and 3 9 2 13 Installation and user s manual TAC4 DG MODBUS RTU 3 7 1 X Wiring diagrams e 3 ways valve wiring to TAC DG circuit SS SERRES GND OUT4 OUT5 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 EE Ses olololo ole jolo je e o o o o o oogo jo o o K2 K3 12V 12V INT IN2 IN3 IN4 INS 6 IN7 IN8 IN9 12V GND T 5 GNDOUT1 OUT2 Sonde T T Sonde T sensor Switching of a relay to control the circulator SAT3 O R 3 relay T c T c Circulateur g OFF TAC4 DG Heat recovery 14 Possibility to stop the post heating with an external contact 12V INT IN2 3 IN4 INS 6 IN7 8 12V Contact closed po
43. n 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 40254 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 Head Ozidle 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 35 0 or 1 0 or 1 0 or 1 0 or 1 0 or 1 0 or 1 0 or 1 0 or 1 min max of unit 0 or 1 Installation and user s manual TAC4 DG MODBUS RTU 9 4 Alarms See our Alarm document for more details Register Read Type Alarm bits Write Alarm flags are bits in holding registers 1 bit per alarm 16
44. n the parameters accessible via MODBUS see the complete table in 9 61 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 TAC4 DG Heat recovery 22 e 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 340200 Control Enter exhaust airflow 40205 6 2 2 CA Mode 3 airflow rates Setup _ Chose CA mode 40426 Select Airflow 1 40428 Select Airflow2 0 0 0 0000 Select Airflow 3 40430 Control 40200 Selection of airflow selection position OFF Il ou Ill 40201 6 2 3 LS MODE Setup _ Select LS mode 40426 Select minimum signal Vmin 40438 Select airflow corresponding to Vmin 40440 Select unbalance ratio exhaust supply 40427 Value of the voltage lower threshold 40501 Value of the voltage upper threshold 40503 Possibility to separately control exhaust signal on K3 and supply 40505 signal on K2 airflows Control 40200 Select ventilation position OFF or III 40201 23 P LEMMENS AIR MOVEMENT COMPANY Installation and user s manual TAC4 DG MODBUS RTU 6 2 4 CPs MODE Setup 404260 Choice of the flow of regulation impulse and or extraction 40443 ES
45. ng a problem while initializing reference pressure for a pressure alarm 4 possibilities Actual airflow 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 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 8 in MODBUS table Very unstable pressure 40302 register bit 12 13 in MODBUS table Assigned airflow not reached after 3 minutes 40303 register bit 0 1 in MODBUS table See 3 in table below Par 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
46. ow prior opening of dampers When fans are stopped the dampers are closed AE 10 A 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 sensor T3 e 9 gt 3 the assigned airflow is as defined by SETUP e OC T TIS3 lt 3 the airflow assigned by SETU Pis 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 of the assigned pressure In these conditions LED AF is ON e T3 OC 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 b
47. r 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 OUT definition n mode CPs positive or negative logic reaction speed of the CPs algorithm Post ventilation configuration Access code configuration Factory reset ABE 28 7 7 Use of RC TAC4 remote control 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 TACA configuration and control via entry IN5 7 1 Connecting the RC TACA to the CB4 TAC4 DG circuit The connection between the various circuits is made by a communication bus Follow these st
48. re alarm contact The contact can be normally open factory set or normally closed change setting via register 40510 If alarm activated via INS e N7 12V closed force start the supply fan s at pre programmed airflow e N7 12V open force stop the supply fan s e N8 12V closed force start the exhaust fan s at pre programmed airflow N8 12V open force stop the exhaust fan s Registers 40222 40226 and 40227 can be used instead of INS IN7 IN8 Type 7 Alarm indicating maintenance is expected for configuration see advanced setup MAINTENANCE 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 TACA This alarm indicates a communication problem between the 2 modules of the TAC4 DG regulation It is only displayed on the RC TACA 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 corr
49. 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 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 O1 ILLEGAL FUNCTION The function code received in the query is not an allowable action for the slave e 02 ILLEGAL DATA
50. ressure 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 E EESE K1 K2 K3 12V 12V INT IN2 IN3 IN4 INS 6 IN7 8 IN9 12V GND T 5 GNDOUT1 OUT2 0 10 Vdc b Wiring to several circuits in parallel oo oo IN2 IN3 IN4 INS ING IN7 INS GND IN2 IN3 INA INS ING INS GND K3 12V 129 IN1 INS 12V TS GNDOUT1 OUT2 KR K3 12V 12V IN IN9 12V T 5 GNDOUT OUT2 K2 0 10V signal maximum impedance allowed 1500 O 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 100 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 d
51. st Sunday in March Adjust 1 00 at 3 00 at the last Sunday in October 40420 R W E1 LANGUAGE 0 1 20r3 language on the Remote control RC TAC4 O GB English 1 F French 22D German 3 NL Dutch 40425 R W E1 Postheat setpoint 0 999 For NV KWout BA4 and KWext options In 0 1 C units Range 0 999 meaning 0 99 90 0 is OFF 3 Installation and user s manual TAC4 DG MODBUS RTU 40426 RAN E1 FANS WORKING MODE 0 9 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 40427 R W E1 Exhaust Supply ratio 5 999 To create an unbalance between flows 40428 R W E1 Airflow selection 0 max of unit For CA mode only Airflow 1 K1 Pos l Range 0 9999 40429 R W E1 Airflow selection 0 max of unit For CA mode only Airflow 2 K2 Pos Il Range 0 9999 40430 R W E1 Airflow selection 0 max of unit For CA mode only Airflow 3 K3 Pos Ill Range 0 9999 40431 R W E1 Pressure alarm selection 0 or 1 For CA and LS mode only Pressure alarm selection O No pressure alarm 1 Pressure alarm selected 40432 R W E1 Pressure alarm data 25 999 For CA and LS mode only Pressure offset on supply increase of pressure In Pa units 40433 R W E1 Pressure alarm data 25 999 For CA and LS mode only Pressure offset on exhaust increase of pressure In Pa units
52. st 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 One heating coil e 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 e Controls the coil s 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 digital 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 4 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 a value of the link configured as well as a age value of the unbalance between exhaust and suppl
53. ster 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 H E1 Lemmens product identification code number of the TAC4 Unsigned regulation CID 0 32767 40004 H E1 Modbus mapping version Unsigned Major 100 minor 0 32767 Example 100 major 1 minor 0 40005 R E1 Software version major 0 99 The 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 E1 Software version minor 0 99 40007 H 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 or 1 O OFF 1 ON KWin 40023 R E1 Factory configuration POSTHEAT OPTION 0 10r2
54. tatus O inactive 1 active Bit 10 SAT BA WP 0 inactive 1 active 33 0 999 0 16383 0 100 0 100 0 100 19997999 999 9997999 29995999 39995999 29995 999 999 999 0 2047 Installation and user s manual TAC4 DG MODBUS RTU 40170 H 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 H E1 Analog output OUT2 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 40172 H 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 H E1 Analog output OUT 7 0 100 Postheat cool or BA option opening of the 3 ways valve In 0 1V units range 0 100 meaning 0 0V 10 0V 40175 E1 Analog output OUT 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 96 In units range 0 100 meaning 0 100 40187 H E1 output KWout 0 100 Postheat KWout option power of the electric coil 96 In units range 0 100 meaning 0 100 40188 H E1 output external KW SAT BA KW 0 100
55. w 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 12 cooling not allowed Cooling or heating selection 0 heating position 12 cooling position RESET Perform a reset to clear pending alarms and resume normal working Required to recover from fatal 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 Initializatio
56. w ratio Range 5 999 if 4044322 Percentage of nominal setpoint for extraction Range 1 100 in 9o units AIE 42 41xx5 41xx6 41xx7 9 7 2 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 T Setpoint T Setpoint Bypass mode Time scheduler mapping Register Read Type Description Accepted EU 441007 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 heating cooling T 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 Postheat setpoint For NV KWout BA and KWext options In 0 1 units Range 0 999 meaning 0 99 9 C 0 is OFF Cooling setpoint For BA and BA options In 0 1 C units Range 0 999 meaning 0 99 9 C 0 is OFF Selection of the bypass status 0 Bypass auto based on measured T4 and T 2 1 Bypass forced to
57. 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 C form ore than 5 minutes supply and exhaust airflow reduction of 33 if CA or LS and of 25 if CPs for 15 minutes b Alarm type 14 If T lt 5 C during 5 minutes fa ns 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 14 in table below 40303 register bit 11 12 3 10 2 Alarm table Actions on RC TAC4 Actions on the 4 DG circuit Iu on if connected Iu Display 1 Nae LED Pa LED R2 relay LED AF ALARM ALARM s of SAT3 O R 1 ALARM Alarm Stopped FANx status 2 PRESSURE Rouge ON Closed i 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 ERROR 9 ALARM T Red ON Alarm Stopped SENSOR status 1 2 3 10 ALARM T
58. y airflows exhaust supply o CPs mode select a age value of the reference pressure as well as 8 age value of the unbalance between exhaust and supply airflows 96 exhaust supply Bypass status choose either automatic see 3 7 or either force the bypass to open or close for the TS considered f post heating installed option set the assignment t for the supply air for the TS considered f 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 feature between 2 dates avoid cooling in the winter 15 Installation and user s manual TAC4 DG MODBUS RTU 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 oee 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 indicati
59. y 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 month 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 2 TAC4 DG Heat recovery 44 P LEMMENS COMPANY S A Parc Industriel de Sauveni re 102 Chauss e de Tirlemont 5030 GEMBLOUX TEL 32 0 81 62 52 52 FAX 32 0 81 62 52 53 Wwww lemmens com PLC 09 2011 Cid 050056

MI Regulation TAC4 DG + MODBUS GB

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