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BACnet Communications - Thermal Management Products
265 Liebert
®
IntelliSlot
®
Modbus/BACnet IP
Table 86 Liebert CRV
™
- Glossary
Data Label Data Description
Air Temperature Control Sensor
Sensor from which air temperature measurements will be used for cooling and
heating control.
Air Temperature Dead Band
Value that is divided evenly to form a temperature range above and below [Air
Temperature Set Point]. If measured air temperature is within this range, no
heating or cooling will occur.
Air Temperature Set Point
Desired air temperature. This set point is dependent upon which sensor is
selected for control.
Auto Restart Delay
If power is lost, the control will delay this amount of time after power is restored
before restarting the unit.
BMS Communications Timeout
Building Management System (or external monitoring system) has not
communicated with the system within the expected timeframe.
BMS Timeout Period
Timeframe within which the Building Management System (or external
monitoring system) must communicate with the system to avoid a timeout.
Bottom Fan Issue The bottom fan is not operating within its normal parameters.
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].
Chilled Water Control Valve Failure
Chilled water valve out of position. Chilled water control valve position does not
match expected value.
Clogged Air Filter Air filter is dirty and needs to be (cleaned or) replaced.
Compressor 1 High Head Pressure Compressor 1 high head pressure.
Compressor 1 High Pressure
Transducer Issue
Compressor 1 high pressure transducer is disconnected or the signal is out of
range.
Compressor 1 Hours Exceeded Operating hours for compressor 1 have exceeded the threshold.
Compressor 1 Low Pressure Transducer
Issue
Compressor 1 low pressure transducer is disconnected or the signal is out of
range.
Compressor 1 Low Suction Pressure Compressor 1 low suction pressure.
Compressor 1 Pump Down Issue Unable to pump down suction-side pressure during compressor 1 shutdown.
Compressor 1 Short Cycle
Compressor 1 short cycle. A short cycle is defined as turning on and off a
number of times over a set time period.
Condenser 1 Issue - Event Control
Enable/disable the activation of the [Condenser 1 Issue] event. If set to
'disabled', the event will not be annunciated. This implies that the event will not
be placed in any active event list or in any event history list.
Condenser 1 Issue - Event Type The event type for the [Condenser 1 Issue] event.
Condenser 1 Issue Condenser 1 is not operating within its normal parameters.
Condenser Circuit Unspecified General
Event
One or more unspecified condenser circuit events active. See local unit display
for further details.
Condenser Control Board Issue The condenser control board is reporting an issue.
Condenser Fan Issue Condenser fan is not operating within its operational parameters.
Condenser Fan Power Condenser fan's measured input power.
Condenser Fan Speed Condenser fan speed expressed as a percentage of the maximum rated speed.
Condenser Low Noise Mode - Full Days Days of the week selected for low noise mode full day scheduling.
Condenser Low Noise Mode - Interval
Days
Days of the week selected for low noise mode interval scheduling.
Condenser Low Noise Mode Max Fan
Speed
Maximum fan speed when condenser is placed in low noise mode.
Condenser Low Noise Mode Schedule
Control
Enable/disable scheduled control of condenser low noise mode.
Condenser Low Noise Mode Start Time The time of day at which the condenser will transition into low noise mode.
Condenser Low Noise Mode State State of condenser low noise mode scheduler control.