User manual

Teamwork
Liebert
®
iCOM
®
for Liebert DSE
™
70
4.0 TEAMWORK
Unit-2-Unit (U2U) communications via a private network will allow the following functions to be
placed into operation when the requirement exists. The user must install the correct hardware
(see 5.0 - Installing a Liebert iCOM Unit-to-Unit Network) and properly program the units for
the selected functionality.
The Liebert iCOM network can perform the following functions:
The Teamwork Mode functions allow for multiple stages of cooling/heating and
humidification/dehumidification. Teamwork Mode can be used to prevent environmental units from
“fighting,” where one environmental unit might be cooling while another unit is heating.
The Standby (Lead/Lag) function allows one or more units to be set as “Running” and “Standby” for
activation in case of an alarm. This function also allows the units to be programmed in a rotation to
help ensure “Standby” unit operation.
The Cascade Operation function allows additional units to be staged-on based on the temperature
or humidity requirement.
4.1 Compatibility With Previous Liebert iCOM Controls
Extensive upgrades to the Unit-to-Unit communication software prevent Liebert iCOM controls with
PA2.03.33R software from being compatible with Liebert iCOM controls that have earlier versions of
Liebert iCOM software. Liebert iCOM controls with PA2.03.33R software will not communicate with
Liebert iCOM controls with PA1.XX.XXXSTD software.
Customers who have Liebert iCOM controls with the PA1.XX.XXXSTD software and who need
additional Liebert iCOM units can:
• Purchase new units with the previous software installed at the factory
• Purchase new units with the PA2.01.029.04R software and have a properly trained and qualified
technician downgrade the units to PA1.04.043.STD
• Have a properly trained and qualified technician upgrade the older unit(s) with PA2.01.029.04R
For further information, contact your local Emerson representative.
The Liebert DSE can operate only with the Liebert iCOM with software version PA2.02.XXX or
higher. Previous versions of Liebert iCOM software are not compatible with the Liebert DSE.
Customers who have Liebert iCOM controls with the PA1.XX.XXXSTD software and who need
additional Liebert iCOM units must have a properly trained and qualified technician upgrade the
older unit(s) with PA2.01.029.04R.
For further information, contact your local Emerson representative.
4.2 Teamwork Modes
Groups of cooling units connected to a network can be set up to work together in any of these
teamwork modes:
•No Teamwork
• Teamwork Mode 1—Not available on Liebert DSE units
• Teamwork Mode 2
• Teamwork Mode 3
All Liebert iCOM-controlled cooling units on a network must be set to run in the same teamwork
mode.