PLC Output Table
Output Type Description Status OFF Status ON
0 Control Valve
Interface
Relay
Valve Open
Control
N/A Open Valve
1 Control Valve
Interface
Relay
Valve Close
Control
N/A Close Valve
2 SSR Output Heater Control Heater ON Heater OFF
3 Spare N/A N/A N/A
4 Not Used N/A N/A N/A
5 Contactor Heater Protection Heater Disabled Heater Enabled
6 Lamp Reservoir Level
Alarm
No Alarm Flash - High Level
Alarm
Solid - Low Level
Alarm
7 Lamp Combined Fault No Alarm 1 Flash - Low Flow
Fault
2 Flash - Pump
Overload
3 Flash - Compressor
Overload
Solid - Phase
Reversal
8 Lamp Combined
Fault/Alarm
No Alarm Flash - Low
Refrigeration
Warning
Solid - Low Suction
Pressure Fault
9 Lamp High Discharge
Pressure
No Alarm Flash - Warning
Solid - Fault
10 Contactor Pump OFF ON
11 Contactor Compressor OFF ON
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