Vertiv Liebert XD Series, System Design Manual

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8 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.VertivCo.com.
Data Description 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).
Table 8.1 Liebert XDC/XDP monitoring points
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