29 of 114
M-AP-001-EN Rev. Q
Chapter 4.0 Control Interface Wiring
The Compressor I/O Board is the entry point for control wiring from the chiller/plant to the
compressor. Refer to Figures 4-1 and 4-2 for the proper Compressor I/O Board connectivity.
Figure 4-1 Typical Control Wiring
OUT
I/O
I/O
IN
IN
IN
IN
OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
IN
IN
IN
IN
ModBus Common (Shield)
ModBus RS-485 NetB
ModBus RS-485 NetA
0-10V
Demand -
Interlock Contact - Safety N/C
Interlock Contact - Safety N/C
Compressor Status - N/O Contact
Compressor Status - N/O Contact
Entering Chilled Water
Temp. Sensor
Leaving Chilled Water
Temp. Sensor
EXV Phase 1A
EXV Phase 1B
EXV Phase 2A
EXV Phase 2B
EXV #1
(Evaporator or
load balancing
valve)
EXV Phase 1A
EXV Phase 1B
EXV Phase 2A
EXV Phase 2B
EXV #2
(Economizer or
load balancing
valve)
Level 15V
Sensor Signal , 1-5Volts
Level Sensor 0V
Level 15V
Sensor Signal , 1-5Volts
Level Sensor 0V
Level
Sensor
#1 (Evaporator)
Level
Sensor
#2 (Economizer)
Liquid Tempe
Liquid Temperature -
Compressor Running - N/O Contact
Compressor Running - N/O Contact
Pressure Sensor Signal, 1-5Volts
5V
Sensor 0V
Temperature Sensor Signal, 1-5Volts
*Universal Analog
*Universal Analog Output -
* Universal output can be used for :
output manual control
0-5VDC or 0-10VDC
RS232 Monitoring Connector (DB9)
J6
J7
J1
J2
J4
J5
J3
J8
LIQDT
SPEED
ST
ATUS
I/LOCK
DEMAND
COM
NET
A
NETB
EXV1
EXV2
1A
1B
2A
2B
1A
1B
2A
2B
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
OUT
IN
OUT
RUN
ENTR
Y
LEA
VE
ANALOG
Float
Float
SP
ARE T
SP
ARE P
No function
No function
**Level sensor circuit can be configured
for two types of sensors using jumpers
JP5 and JP6. Refer to the Installation and
Operations Manual for details.
Summary of Contents for TGH Series
Page 8: ...8 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 10: ...10 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 34: ...34 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 38: ...38 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 46: ...46 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 54: ...54 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 56: ...56 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 58: ...58 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 78: ...78 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 88: ...88 of 114 M AP 001 EN Rev Q Figure 16 17 Suction Port All Models ...
Page 94: ...94 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 96: ...96 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 98: ...98 of 114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 108: ...108of114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...
Page 110: ...110of114 M AP 001 EN Rev Q THIS PAGE INTENTIONALLY LEFT BLANK ...