Technical Specifications

Modbus RTU and Modbus TCP Protocols - Thermal Management Products
Liebert
®
IntelliSlot
®
Modbus/BACnet 34
BMS Timeout Period
Timeframe within which the Building Management System (or
external monitoring system) must communicate with the system to
avoid a timeout.
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.
Chilled Water Valve Hours
Operating hours for chilled water valve since last reset of this value.
If operating hours exceeds 32,000, this client will continue to
display 32,000, but the iCOM display will show the actual value.
Chilled Water Valve Reset Enable Enable/disable the ability to reset the chilled water valve.
Circuit Cooling Load
The amount of heat energy currently being removed by a single
refrigeration circuit.
Clogged Air Filter - Event Control
Enable/disable the activation of the [Clogged Air Filter] 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.
Clogged Air Filter - Event Type The event type for the [Clogged Air Filter] event.
Clogged Air Filter Air filter is dirty and needs to be (cleaned or) replaced.
Cold Aisle Cascade Fan Speed Max Set Point
Cold aisle maximum fan speed when system is in cascade mode
and one or more units in the system are in standby.
Cold Aisle Control Enable Enable/disable cold aisle control.
Cold Aisle Fan Speed Max Set Point
Cold aisle maximum fan speed when system is not in cascade
mode OR when system is in cascade mode and no units in the
system are in standby.
Cold Aisle Fan Speed Min Set Point Cold aisle minimum fan speed.
Cold Aisle Force Max Fan/Cooling - Ext Control
The cold aisle fan speed and system cooling can be forced to
100% via an external input signal. Use this value to enable/disable
that feature.
Cold Aisle Humidity Calculation Method
Algorithm used to calculate a single cold aisle humidity value from
multiple humidity measurements.
Cold Aisle Temperature Calculation Method
Algorithm used to calculate a single cold aisle temperature value
from multiple temperature measurements.
Compressor 1B Hours Exceeded Fixed compressor 1B run hours have exceeded the threshold.
Compressor 1B Thermal Overload Fixed compressor 1B is shut down due to thermal overload.
Compressor 2B Hours Exceeded Fixed compressor 2B run hours have exceeded the threshold.
Compressor 2B Thermal Overload Fixed compressor 2B is shut down due to thermal overload.
Compressor Capacity Control State
Compressor capacity control state. When 'ON', the cooling capacity
of the compressor has been reduced.
Compressor Capacity Reduced Compressor capacity has been reduced.
Compressor High Head Pressure - Event Control
Enable/disable the activation of the [Compressor High Head
Pressure] 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.
Compressor High Head Pressure - Event Type The event type for the [Compressor High Head Pressure] event.
Compressor High Head Pressure Compressor is shut down due to high head pressure.
Table 10 Liebert Challenger 3000
™
, Liebert Challenger ITR
™
, Liebert CW
™
, Liebert Deluxe System/3
™
,
Liebert DS
™
, Liebert DSE
™
, Liebert HPM
™
, Liebert PeX
™
- Glossary (continued)
Controller Liebert iCOM
®
v4
Data Label Data Description