Emerson Liebert iCOM Manual De Usuario

Contact your local Emerson representative for more information or to order the static pressure kit.
The Liebert iCOM control can accept up to four static pressure sensors connected to available analog 

inputs to modulate the fan speed as part of Optimized Aisle Control. The user can aggregate multiple 

sensor readings to control server airflow based on an average, maximum or minimum reading of the 

connected sensors.

Two modes of control can be selected when using static pressure to modulate EC and VFS fans with 

Optimized Aisle Control: limit and control. This choice can be made at S190 in the Service Setpoints 

Menu. The limit control method modulates the fan to ensure that the static pressure never falls below 

the static pressure setpoint, S191. If the static pressure is above the setpoint the fan will not be 

ramped down. The control method modulates the fan to ensure the static pressure setpoint is 

maintained. It will increase and decrease the fan speed to maintain the static pressure setpoint.
To help protect rack equipment, the Liebert iCOM may be programmed to override static pressure 

control if the return or remote temperature gets too warm. This feature will provide additional airflow 

to hot spots in the conditioned area if the static pressure setpoint is no longer suitable to maintain the 

required temperature.