ACS HE Series, Operation And Instruction Manual

Page: 54 / 83

HE Series Central Chillers Chapter 6: 54 of 83
• Retransmission of the Chiller Out Temperature
• Retransmission of the Tank Temperature
Digital In
• Aux Alarm* (
See Aux Alarm in Alarm Section )
• Compressor A Verification
• Compressor B Verification
• Evaporator Fluid Differential Pressure Switch*
• Fluid Flow Switch
• High Discharge Pressure Switch
• Phase Monitor* (
See Phase Monitor in Alarm Section )
• Pump Tank Confirm*
• Remote Start*
*
Optional
Digital Out
• Alarm Horn.
• Alarm Warning - Activates when an alarm warning is active.
• Compressor A Starter.
• Compressor B Starter.
• Condenser Fan Active.
• Cooling Active - The output activates when one or more compressors are active.
• Pump Tank Enable - The output activates when the system is online.
• System Online - The output activates when the system is online.
Pump Enable
This output will activate when the chiller is online.
Reduced Fluid Flow Detection
When this option is installed the reduced fluid flow warning alarm and sensor failure
alarm are enabled. The reduced fluid flow sensor is used to show the percent difference
from optimal fluid flow.
Remote Setpoint
When this option is installed and enabled (remote SP mode variable set to remote), the
chiller will be controlled to the setpoint sent to the PLC’s configurable analog input
instead of the setpoint entered via the display.
Remote Start