OM WGS-5 WGS 130A to 190A 31
Table 8, Low Evaporator Pressure Inhibit
Mode Range
Unit Mode = Cool 30 to 45 Psig
Unit Mode = Cool w/Glycol, Ice w/ Glycol 15 to 45 Psig
Table 9, Low Evaporator Pressure Unload
Mode Range
Unit Mode = Cool 28 to 45 Psig
Unit Mode = Cool w/Glycol, Ice w/ Glycol 15 to 45 Psig
Circuit Controller
Circuit Inputs and Outputs
Table 10, Analog Inputs
# Description Signal Source Range
1 Evaporator Pressure 0.1 to 0.9 VDC
0 to 132 psi
2 Condenser Pressure 0.1 to 0.9 VDC
3.6to 410 psi
3 Open
4 Suction Temperature NTC Thermister (10k@25°C) -58 to 212°F
5 Discharge Temperature NTC Thermister (10k@25°C) -58 to 212°F
6 Open
7 Slide Load Indicator 4 to 20 mA
0 to 100%
8 Condenser LWT (circuit 1, water cooled only) NTC Thermister (10k@25°C) -58 to 212°F
Table 11, Analog Outputs
# Description Output Signal Range
1 Fan VFD (air cooled only) 0 to 10 VDC 0 to 100% (1000 steps resolution)
2 Open
3 EXV Driver 0 to 10 VDC 0 to 6386 steps (1000 steps resolution)
4 Open
Table 12, Digital Inputs
# Description Signal Signal
1 Circuit Switch 0 VAC (Off) 24 VAC (Auto)
2 Open
3 Open
4 VFD Fault 0 VAC (Fault) 24 VAC (No Fault)
5 Oil Differential Pressure Switch 0 VAC (Fault) 24 VAC (No Fault)
6 Mechanical High Pressure Switch 0 VAC (Fault) 24 VAC (No Fault)
7 Open
8 Open
9 Oil Level Sensor 0 VAC (Fault) 24 VAC (No Fault)
10-14 Open
The status of digital inputs may be viewed on Circuit Status screen 5, on the circuit
controllers only.
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