141
APPENDIX B
Analog and Discrete I/O
The Analog and Discrete I/O section identifies the channel assignments for sensor
inputs, control outputs, and status inputs for various compressor models.
Analog Inputs
RECIP Compressor-Analog Inputs
TYPE CHANNEL NAME RANGE UNITS SENSOR TYPE
Press 1 Suction Press 0: 200 INGH 4-20 mA
Press 2 Discharge Press 0: 500 PSIG 4-20 mA
Press 3 Oil Press 0: 500 INGH 4-20 mA
Well Temp 4 Discharge Temp 32: 392 DEGF 4-20 mA
Well Temp 5 Oil Temp 32: 392 DEGF 4-20 mA
Well Temp 6 Suction Temp -58: 122 DEGF 4-20 mA
Press 7 Intermediate Press(Two Stage) 0: 500 PSIG 4-20 mA
Spare(One Stage)-DP2
Well Temp 8 Process Temp or DT2 -58: 122 DEGF 4-20 mA
Discrete I/O RACK 1
TYPE CHANNEL NAME OFF STATE ON STATE NOTES
Output 1 Compressor Motor Off On
Output 2 Capacity Stage 1 Off On
Output 3 Capacity Stage 2 Off On
Output 4 Capacity Stage 3 Off On
Output 5 Capacity Stage 4 Off On
Output 6 Spare Off On
Output 7 Spare Off On
Output 8 Alarm/Failure Norm Alarm
Input 9 Motor AUX Open Closed 1
Input 10 AUX Shutdown Alarm Norm 3
Input 11 Safety Circuit Alarm Norm 3
Output 13 Crank Case Heater Off On
Input 12 Remote Start/Stop Open Closed
Output 14 Oil Return Solenoid Closed Open
Output 15 Cooling Control Closed Open
Output 16 Spare Closed Open
Notes:
1-Normally open contact with no power or level 5-De-energize for condition
2-Normally closed contact with no power or level 6-Pilot driven-Energize to close
3-Normally closed contact open to fail 7-De-energize to turn via customer supplied relay
4-Energize for condition
To Next Page
Loading...
