Vertiv Liebert iCOM User Manual

3.1.12 Automatic Fan Speed Control
Temperature sensors can control fan speed using one of three modes based on the type of sensor selected as the fan-control
sensor: supply, return, or remote, see Table 3.2 below . Control is based on the selected sensor for both fan control and
temperature control and their setpoints as follows:
• Coupled: The fan control and temperature control sensor selection is the same. When coupled, fan speed and
cooling capacity share the same temperature setpoint.
• Decoupled: The fan control and temperature control sensor selection is different. When decoupled, fan speed
control and temperature control have separate setpoints and tunable Pl loops.
Temperature Control Sensor Selected
Supply Sensor Remote Sensor Return Sensor
Fan Control Sensor Selected
Supply Sensor Coupled Decoupled Decoupled
Remote Sensor Decoupled (Recommended) Coupled N/A
Return Sensor Decoupled N/A Coupled
Table 3.2 Fan Speed Controlling Sensor Options
To set parameters for automatic fan speed control:
1. Touch , then > Setpoints > Fan Control,
• Set Fan Control Type to Manual
• Select a Fan Control Sensor.
• Adjust the setpoint options, then touch Save.
Sensor based fan speed control is set.
2. Touch Temperature Control.
3. On the TEMPERATURE CONTROL secondary panel:
• Select a Temperature Control Sensor.
• Adjust the setpoint options, then touch Save.
3.1.13 Configuring Static Pressure Setpoints
1. Touch , then > Setpoints > Static Pressure Settings. The STATIC PRESSURE SETTINGS secondary
panel opens.
2. Adjust the setpoint options described in the Static Pressure Settings Options on the next page , then touch Save.
The setpoint is updated.
• Touch Cancel to discard the changes.
3 Service Operation
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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