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Modbus 485 and Modbus IP Protocols - Thermal Management Products
Liebert
®
IntelliSlot
®
Modbus/BACnet IP 56
Evaporator Fluid Freeze - Auto
Reset
Evaporator outlet fluid temperature has dropped below the freeze threshold.
Evaporator has been shut down, but will restart when the temperature rises above the
threshold.
Evaporator Fluid Freeze - Manual
Reset Required
Evaporator outlet fluid temperature has dropped below the freeze threshold.
Evaporator has been shut down and requires a manual reset.
Evaporator Inlet Temp Sensor
Issue
The evaporator inlet temperature sensor is disconnected or the signal is out of range.
Evaporator Return Fluid Over Temp
Alarm Threshold
Alarm threshold value used in the [Evaporator Return Fluid Over Temp] event.
Evaporator Return Fluid Over Temp
Warning Threshold
Warning threshold value used in the [Evaporator Return Fluid Over Temp] event.
Evaporator Return Fluid Over Temp
[Evaporator Return Fluid Temperature] has exceeded a threshold. The event is
deactivated when the temperature drops below the threshold.
Evaporator Return Fluid
Temperature
Fluid temperature measured at the inlet of the evaporator.
Evaporator Return Fluid Under
Temp Alarm Threshold
Alarm threshold value used in the [Evaporator Return Fluid Under Temp] event.
Evaporator Return Fluid Under
Temp Warning Threshold
Warning threshold value used in the [Evaporator Return Fluid Under Temp] event.
Evaporator Return Fluid Under
Temp
[Evaporator Return Fluid Temperature] has dropped below a threshold. The event is
deactivated when the temperature rises above the threshold.
Fluid Cooling Proportional Band
Temperature control band above [Actual Supply Fluid Temp Set Point]. If [Return Fluid
Temperature] is within this band, fluid cooling operations are proportionally controlled.
Fluid Pressure Fluid pressure. This is the pressure within a closed water/glycol circuit.
Free Cooling External Temperature
Delta
Minimum temperature delta required between return fluid and external ambient air
temperatures in order to enable free cooling.
Free Cooling Status Free cooling status.
Free Cooling Utilization Present free cooling utilization expressed as a percentage of the maximum.
Free Cooling Valve Hours
Exceeded
[Free Cooling Valve Hours] has exceeded [Free Cooling Valve Hours Threshold].
Free Cooling Valve Hours
Threshold
Threshold value used in the [Free Cooling Valve Hours Exceeded] event.
Free Cooling Valve Hours Operating hours for free cooling valve since last reset of this value.
Free Cooling Valve Open Position Free cooling valve open position.
Humidifier Control Board Not
Detected
Humidifier control board is required to be connected, but no signal is detected.
Low Condenser Refrigerant
Pressure
Refrigerant pressure in condenser coil is too low.
Low Fluid Pressure [Fluid Pressure] has dropped below a specified threshold.
Master Unit Communication Lost Communication with master unit has been lost.
Pump 1 Loss of Flow
Loss of flow is detected in pump 1. This condition occurs when no flow is detected
through the flow switch.
Pump 1 State Pump 1 operational state.
Pump 2 Loss of Flow
Loss of flow is detected in pump 2. This condition occurs when no flow is detected
through the flow switch.
Pump 2 State Pump 2 operational state.
Pump Hours Exceeded [Pump Hours] has exceeded [Pump Hours Threshold].
Pump Hours Threshold Threshold value used in the [Pump Hours Exceeded] event.
Pump Hours Operating hours for pump since last reset of this value.
RAM Battery Issue RAM or RAM backup battery is not operating correctly.
Table 17 Liebert HPC
™
(Chiller) - Glossary (continued)
Controller Liebert iCOM
®
v4
Data Label Data Description