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Compressor Controller Inputs and Outputs
The following tables list, for each compressor controller, analog inputs and digital outputs as well as the stepper motor outputs.
Table 29: Compressor Controller, Analog Inputs
# Description Source Signal Sensor Range
1 Compressor Suction Temperature NTC Thermistor 10k @ 25°C -40 to 125°C
2 Compressor Discharge Temperature NTC Thermistor 10k @ 25°C -40 to 125°C
3 Suction Refrigerant Pressure Sealed Gage Transducer 0.5 to 4.5 VDC nominal 0 to 100 psi
4
Discharge Refrigerant Pressure Sealed Gage Transducer 0.5 to 4.5 VDC nominal 0 to 200 psi
5 Rotor Pump Temperature NTC Thermistor 10k @ 25°C -40 to 125°C
6 Inlet Guide Vane Position Rotary Transducer 1.5 to 2.6 VDC nominal Closed to Open
7 Motor Winding Temperature 1 NTC Thermistor 10k @ 25°C -40 to 150°C
8 Motor Winding Temperature 2 NTC Thermistor 10k @ 25°C -40 to 150°C
9 Motor Winding Temperature 3 NTC Thermistor 10k @ 25°C -40 to 150°C
10 Motor Case Temperature NTC Thermistor 10k @ 25°C -40 to 125°C
11 Motor Gap Temperature NTC Thermistor 10k @ 25°C -40 to 125°C
Table 30: Compressor Controller, Digital Outputs
# Description Load Output OFF Output ON
1 VFD Enable VFD Compressor OFF Compressor ON
2 Liquid Injection Solenoid (24 VDC, 20 VA max) No Injection Injection
3 Stator Cooling Solenoid (24 VDC, 20 VA max) Cooling OFF Cooling ON
Table 31: Compressor Controller, Analog Outputs
Description Output Signal Sensor Range
Inlet Guide Vane Driver Position 0 to 10 VDC 0 to 100%
Rotor Cooling Driver Signal 0 to 10 VDC 0 to 100%
PLBV Driver Position 0 to 10 VDC 0 to 100%
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