Vertiv Liebert iCOM User Manual

Cascaded Units Quick Start
After a power cycle of the master unit, identical to Cascaded Units Delay except that it should be shorter to get units to
start more quickly after a power cycle.
• This delay remains in effect until all cascaded units have been restarted, then the delay reverts to setting of
Cascaded Units Delay.
Max. Intermediate System Speed
Limits the fan speed of the group until all units in cascade are powered on. Once all units are operating, the fan speed
may increase beyond this setting.
Number of Connected Units
Number of units connected in the group if U2U networked.
Start Next Unit at SYS Fan Speed
Fan speed at which the next cascaded unit is powered on.
Stop Next Unit at SYS Fan Speed
Fan speed at which the next cascaded unit is powered off. Unit power off may be delayed by Cascaded Units Off Delay.
Based on
Select the way the sensor readings from each cooling unit in the group are used to control temperature and humidity.
Options are:
• Maximum: based on the highest reading from a sensor in the group.
• Average: based on the average readings from the sensors in the group.
Type
Teamwork mode to use for the group.
6.2.2 No Teamwork—Multiple Zones in One Room
When a teamwork mode is not used, cooling units work independently based on their own sensors. Standby and unit rotation
may be used, but cascading cannot.
6.2.3 Teamwork Mode 1—Parallel Operation
In Teamwork mode 1, fan speed and cooling capacity are ramped up in parallel, which means that all units operate identically.
Teamwork mode 1 is best for small rooms with balanced heat loads. A master unit collects the controlling readings for
temperature and humidity from all the operating (fan on) units in the group, then determines the average or worst-case
reading, and sends operating instructions to efficiently distribute cooling capacity across available units.
In Teamwork mode 1, most parameters are shared and, when set in any unit, are set in all units in the group.
NOTE: Teamwork Mode 1 - Parallel is not supported on the Vertiv™ Liebert® DSE product line.
6 Teamwork, Standby and RotationforCoolingUnits
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Vertiv™ Liebert® iCOM™Installer/User Guide

Vertiv Liebert iCOM Specifications

General

Brand	Vertiv
Model	Liebert iCOM
Category	Control Unit
Language	English