Technical Specifications

Monitoring
145
8.0 MONITORING
The Liebert XDC and Liebert XDP with iCOM allow for control down to the Smart Module level.
Many of the Liebert XD system data points can be monitored through a building management system.
For specific protocol mapping, refer to the protocol specific reference guide for registers, available at
www.liebert.com
Table 55 Liebert XDC/XDP monitoring points
Data Decription
Definitions
Auto Restart Delay
If power is lost, the control will delay this amount of time after power is
restored before restarting the unit.
Calculated Next Maintenance Month
Calculated month of the next scheduled maintenance. Used in
conjunction with (Calculated Next Maintenance Year).
Calculated Next Maintenance Year
Calculated year of the next scheduled maintenance. Used in conjunction
with (Calculated Next Maintenance Month).
Circuit 1 Low Suction Pressure Compressor Circuit 1 low suction pressure.
Circuit 2 Low Suction Pressure Compressor Circuit 2 low suction pressure.
Compressor 1A High Head Pressure Compressor 1A High Head Pressure
Compressor 1A Short Cycle
Compressor 1A short cycle. A short cycle is defined as turning On and
Off a number of times over a set time period.
Compressor 1A State Compressor 1A operational state.
Compressor 1B High Head Pressure Compressor 1B high head pressure.
Compressor 1B Short Cycle
Compressor 1B short cycle. A short cycle is defined as turning On and
Off a number of times over a set time period.
Compressor 1B State Compressor 1B operational state.
Compressor 2A High Head Pressure Compressor 2A high head pressure.
Compressor 2A Short Cycle
Compressor 2A short cycle. A short cycle is defined as turning On and
Off a number of times over a set time period.
Compressor 2A State Compressor 2A operational state.
Compressor 2B High Head Pressure Compressor 2B high head pressure.
Compressor 2B Short Cycle
Compressor 2B short cycle. A short cycle is defined as turning On and
Off a number of times over a set time period.
Compressor 2B State Compressor 2B operational state.
Customer Input 1 Customer Input 1.
Dew Point Temperature Dew point temperature, using the highest reading from all sensors.
Ext Air Over Temp Threshold
Threshold value used in the ([Ext Air Sensor A Over Temperature], [Ext
Air Sensor B Over Temperature]...) events.
Ext Air Sensor A Dew Point Temp Dew point temperature as measured by External Air Sensor A.
Ext Air Sensor A Humidity Relative humidity as measured by External Air Sensor A.
Ext Air Sensor A Issue The External Air Sensor A is disconnected or the signal is out of range.
Ext Air Sensor A Over Temperature
(Ext Air Sensor A Temperature) has exceeded (Ext Air Over Temp
Threshold).
Ext Air Sensor A Temperature Air temperature as measured by External Air Sensor A.
Ext Air Sensor A Under Temperature
(Ext Air Sensor A Temperature) has dropped below (Ext Air Under Temp
Threshold).
Ext Air Sensor B Dew Point Temp Dew point temperature as measured by External Air Sensor B.
Ext Air Sensor B Humidity Relative humidity as measured by External Air Sensor B.
Ext Air Sensor B Issue The external air sensor B is disconnected or the signal is out of range.
Ext Air Sensor B Over Temperature
(Ext Air Sensor B Temperature) has exceeded (Ext Air Over Temp
Threshold).
Ext Air Sensor B Temperature Air temperature as measured by External Air Sensor B.