OMM 1130-2 19
Table 4, Analog Outputs
Cooling Tower Bypass Valve Position
3 Circuit #1 Electronic Expansion Valve 0 to 10 VDC 0 to 100%
Circuit #2 Electronic Expansion Valve
NOTE: Analog outputs 3 & 4 are for R410A and R134a units only.
Table 5, Digital Inputs
The following parameters are digital inputs to this controller.
C1 = Refrigerant Circuit #1, C2 = Refrigerant Circuit #2, UT = Unit, *n = Refrigerant Dependent
Evaporator Water Flow Switch
Motor Protection #1 C1 0 VAC (Fault) 24 VAC (No Fault)
Open
Condenser Water Flow Switch (R134a,R410a)
Phase Voltage Fault #1 (See Note 1 Below)
Phase Voltage Fault #2 (See Note 1 Below)
Ground Fault Prot. #1 (See Note 2 Below)
Ground Fault Prot. #2 (See Note 2 Below)
Remote Start/Stop UT 0 VAC (Stop) 24 VAC (Start)
Condenser Water Flow Switch
Open
Motor Protection #1
Motor Protection #2
C2 0 VAC (Fault) 24 VAC (No Fault)
Notes:
1. See Safety Alarms Table for “Phase Voltage Protection”. Units with single point electrical connection will have one PVM with
Inputs 9 and 10 wired together. Units with multiple point connection will have two PVM’s with Input 9 for Electrical Circuit #1 and
Input 10 for Electrical Circuit #2.
2. See Safety Alarms Table for “Ground Fault Protection”. Units with single point electrical connection will have one GFP with
Inputs 11 and 12 wired together. Units with multiple point connection will have two GFP’s with Input 11 for Electrical Circuit #1
and Input 12 for Electrical Circuit #2.
Table 6, Digital Outputs
The following parameters are digital outputs from this controller.
C1 = Refrigerant Circuit #1, C2 = Refrigerant Circuit #2, UT = Unit, *n = Refrigerant Dependent
3
Condenser Fan #1 – Water Cooled = N /
Condenser Water Pump – Water Cooled = Y
C1 / UT
Fan Contactor/
Fan OFF Fan ON
Motor Control Relay #1 = Compr#1 C1 Starter Compressor OFF Compressor ON
Continued next page.