Installation
BAS-SVX08D-E4
14
Wiring PIC with RTAA/RTAB/RTXA/RTAD/RTWB/RTRA/RTUB chillers
(UCM CLD controller with CSR interface)
The following wiring diagram applies for units equipped with UCM CLD
controller with the CSR (A9) communication interface.
Wiring PIC with CVGE/CVAE/RTHC chillers (UCP2 controller)
The following wiring diagram applies for units equipped with UCP2
controller with the TCI4-Comm3 (A9) communication interface.
Protocol Interface
Controller
MODBUS
Tx
Rx
RS485
RS232
A
Ref
B
RJ-45
Resistor
On
DIAG
USB
COMM3
1
Tx
Rx
2
SHD
Service
PIN
LON
B
A
B
A
24V
GND
CONFIGURATION
SW1
SW2
SW3
SW4
Rx
Serv.
0V
ON
24 V
Imax=0.5A
2
24V AC/DC
+6V/-12V
TCI4 - Comm3
A9
1
2
J3-A
3
4
Protocol Interface
Controller
MODBUS
Tx
Rx
RS485
RS232
A
Ref
B
RJ-45
Resistor
On
DIAG
USB
COMM3
1
Tx
Rx
2
SHD
Service
PIN
LON
B
A
B
A
24V
GND
CONFIGURATION
SW1
SW2
SW3
SW4
Rx
Serv.
0V
ON
24 V
Imax=0.5A
2
24V AC/DC
+6V/-12V
CSR
A9
1
2
TB2
3
4
