Emerson Liebert iCOM Manual De Usuario

Cooling units to be set up for Teamwork Mode 3 (Liebert Optimized Aisle Control) must be connected 

in a Liebert iCOM U2U network and must have:

• Digital scroll compressors, tandem compressors chilled water valves or four-step compressors. 

(Two-step semi-hermetic compressors and standard scroll units cannot be configured for 

Teamwork 3.)

• Variable speed fans
• Supply air sensors connected for temperature control.

1. Go to the Service Menu > Remote Sensors and verify that all the connected 2T sensor readings are 

shown.

2. Set the corresponding sensors’ nodes to either control or reference. These settings are based on 

rack setup or customer preference.

3. Determine the appropriate setting for SB03 Unit Remote Sensor Mode/AVG incl. The values set 

here will determine how the Liebert iCOM monitors inlet rack temperature to control the fans.
Max: controls fan(s) based on the maximum rack temperature.
Average: controls fan(s) based on an average rack temperature. The number of sensors to be used 

to calculate the average is determined to the far right. If the number of sensors to be used to 

calculate the average is less than the number of rack sensors programmed for control, the Liebert 

iCOM will average only the highest sensor readings.

4. Set Service Menus > Setpoints S103 Temperature Control Sensor to Supply. This parameter must 

be set at each unit.

5. Go to Service Menu > System/Network Setup S803 Teamwork Mode. Change the value to the 

right to 3 Optimized Aisle. 

6. Go to Service Menu > Setpoints S146 Fan Control Sensor and set this to Remote. This parameter 

only needs to be set for one unit. The other connected units in the group will auto-set themselves. 

7. Adjust the rack temperature Setpoint at S147 to the desired value. This is typically set to 75, but 

is customer preference.

8. Adjust S103 Temperature Setpoint to the desired value. This will must be set on a unit-to-unit 

basis depending on the unit’s area of influence.

9. Monitor operation and adjust corresponding setpoints and control bands as needed.

This function can be performed in any teamwork mode, including NO Teamwork.
One or more units can be defined to be Standby; the normal status of standby units is Standby Off 

(fan Off).
In case one regular unit has an alarm that is defined (to be defined in the alarm configuration), to 

switch On a standby unit, the faulty unit will switch Off and the standby unit will switch On.
If the next unit has an alarm, the next standby unit will be started. If no more standby units are 

available, the unit with a non-critical alarm that permits unit operation will be switched On again 

(water detection, fan alarm, fire alarm etc. will not permit unit restarting).
The standby function can be rotated daily (setting the time), weekly (setting the day of the week and 

time) or monthly (setting the first weekday of the month and time).
The rotation is performed with a selectable number of units: if 1 is selected, to standby rotates from 

1-2 to 2-3 in a 4 units configuration with two standby units, and rotates from 1-2 to 3-4 in the same 

configuration, when the rotation parameter is set to 2.