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Schematic &
Termination Diagram
CAREL pCO5
G
J1-1
24Vac Power Supply
G0
J1-2
Power Supply Reference
+V
J24-1 Additional Power Supply for Aria
GND
J24-2 Power Supply Common
+5V
J24-3 Power Supply for 0/5V Ratiometric Probe
U1
J2-1
Evaporating Pressure, Circuit 1
U2
J2-2
Evaporating Pressure, Circuit 2
U3
J2-3
Remote Setpoint
GND
J2-4
Common
+Vdc
J2-5
~21Vdc Power Supply (Max Current 200mA)
U4
J3-1
Outlet Air Temperature (Fan Outlet Temp)
GND
J3-2
Common
U5
J3-3
External/Outside Temperature
GND
J3-4
Common
ID1
J5-1
Serious Alarm Switch (Emergency Stop)
ID2
J5-2
Air Flow Switch
ID3
J5-3
Remote ON/OFF
ID4
J5-4
Main Fan Overload
ID5
J5-5
Low Pressure Switch Circuit 1
ID6
J5-6
High Pressure Switch Circuit 1
ID7
J5-7
Compressor 1 Overload Circuit 1
ID8
J5-8
Compressor 2 Overload Circuit 1
IDC1
J5-9
Common (DI 1-8)
U6
J6-1
Condensing Pressure Circuit 1
U7
J6-2
Condensing Pressure Circuit 2
U8
J6-3
Room Temperature (Return Air Temp)
GND
J6-4
Common
ID9
J7-1
Condenser Fan Overload Circuit 1
ID10
J7-2
Low Pressure Switch Circuit 2
ID11
J7-3
High Pressure Switch Circuit 2
ID12
J7-4
Compressor 1 Overload Circuit 2
IDC9
J7-5
Common (DI 9-12)
ID13h J8-1
Not used
ID13
J8-2
Compressor 2 Overload Circuit 2
IDC13 J8-3
Common (DI 13-14)
ID14
J8-4
Condenser Fan Overload Circuit 2
ID14h J8-5
Not used
C1
J12-1 Common (Relays 1-3)
NO1
J12-2 Compressor 1 Circuit 1
NO2
J12-3 Compressor 2 Circuit 1
NO3
J12-4 Liquid Solenoid Circuit 1
C1
J12-5 Common (Relays 1-3)
C4
J13-1 Common (Relays 4-6)
NO4
J13-2 Compressor 1 Circuit 2
NO5
J13-3 Compressor 2 Circuit 2
NO6
J13-4 Liquid Solenoid Circuit 2
C4
J13-5 Common (Relays 4-6)
C7
J14-1 Common (Relay 7)
NO7
J14-2 Condenser Fan 1 Circuit 1
C7
J14-3 Common (Relay 7)
NO8
J15-1 General Alarm, N/O
C8
J15-2 Common (Relay 8)
NC8
J15-3 General Alarm, N/C
C9
J16-1 Common (Relays 9-11)
NO9
J16-2 Condenser Fan 1 Circuit 2
NO10 J16-3 Antifreeze Heater Circuit 1
NO11 J16-4 Antifreeze Heater Circuit 2
C9
J16-5 Common (Relays 9-11)
NO12 J17-1 Main Fan, N/O
C12
J17-2 Common (Relay 12)
NC12 J17-3 Main Fan, N/C
NO13 J18-1 Condenser Running Status, N/O
C13
J18-2 Common (Relay 13)
th-Tune
NC13 J18-3 Condenser Running Status, N/C
G G0
24VAC from Terminals G, G0
FIELD Card
RS485 Connection: GND, +, -
40
RAUP 600
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