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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