Emerson Liebert ICOM-DO Service Manual download pdf (Page 49)

iCOM

Controls Training and Service Manual

Teamwork

Teamwork Modes

Teamwork is the ability to group unit functionality, while connected in a network, to

provide the ability to work together as a team and address control functions in

three different teamwork modes:

“No” Teamwork

In this mode all units are working independently for control and functionality. No

values or sensors are shared. While in this mode units may be setup to provide

the Lead/ Lag function and rotation, however, units may not be setup in the

Cascade functionality.

Teamwork Mode 1

In this mode unit parameters (system settings) are shared if the system value is

set in any of the units, all units will follow with same settings. (See Glossary of

Unit and System parameters section).

The return air temperature and humidity sensed by each unit in the network will be

averaged and used for control by the lead unit.

The Lead Unit designation #1 and will provide the calculations for the system

requirements and will provide the calculated divisions of the proportional band to

each of the units to start the required operations. The width of the proportional

band in multiple unit configurations is shown as normal, but internally the lead unit

(unit #1) sends the requests to the other units and multiplies this width by the

number of available units in the program.

To be an available unit for operations in this mode:

a) The unit cannot be in a standby (lead/lag) configuration: all units must be on

b) The units in the cascade function are not off or set with alarms functions to

be switch off.

This mode of control will drive all Chilled Water or FreeCooling actuators in parallel

for all units operating in the teamwork mode. The individual unit will control its

own Dual Cooling switchover functions, the low temperature functions and low

discharge air functions.

Teamwork Mode 1 will rotate the lead unit by 1 unit every 24 hours.

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Emerson Liebert ICOM-DO Service Manual Page 49