High Pressure Cutout Switch
Motor Controller Fault
Reserved (MBC#2 Levitated)
Safety Stop Switch
Reserved (MBC#2 Fault)
MBC/Oil Pump VSD Fault
MBC Levitated
Spare
Reserved (HPCO Switch# 2)
Remote Run/Stop Switch
Control Voltage
Remote Cooling Setpoint
Remote Current Limit Setpoint
Chilled Liquid Flow Switch
System Cycling Shutdown
Multi Unit Sequence Cycling
Aux. Safety Shutdown
Cond. Liquid Flow Switch
Reserved (Motor Controller #2 Fault)
Spare
+5V
GND
GND
GND
GND
+12V
+12V
Motor Cooling Booster
Spare
Spare
Spare
Vent Line Solenoid
Purge Regen Drain Tank Solenoid
Spare
Purge Compressor Run
Motor Controller Stop
Motor Controller Start
Cond./Evap Oil Return Solenoid Valve
Purge Inlet Solenoid, Purge Pump,
Purge Pump Solenoid,
Purge Regen Tank Vent Solenoid
Oil Heater
Purge Regen Tank Heater
Reserved (Motor Controller #2 STOP)
Reserved (Motor Controller #2 START)
VGD Shutdown
Condenser Liquid Pump Run
Cycling Shutdown
Safety Shutdown
Remote Mode Ready to Start
Warning Alarm
Chilled Liquid Pump Run
Unit Wiring and Field Connections for YZ Centrifugal Chiller with Magnetic Bearing Controller20