Emerson Liebert iCOM, Manual

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Operation
19 Liebert
®
iCOM
®
for Liebert DSE
™
3.0 O
PERATION
The Liebert iCOM display provides viewing, trending and configuration capability for Liebert cooling
units. All unit settings and parameters can be viewed and adjusted through three menus: User,
Service and Advanced. All active alarms are displayed on the LCD and are annunciated.
The control is shipped from the factory with default selections for all necessary settings. Adjustments
can be made if the defaults do not meet your requirements.
References to menu items in this manual are followed by the main menu and the submenu where they
can be found.
For example:
• Temperature Setpoint (User Menu, Setpoints) - The Temperature Setpoint parameter is
located in the User menu under the Setpoints submenu.
• High Return Humidity (Service Menu, Set Alarms) - The High Return Humidity alarm is
located in the Service menu under the Set Alarms submenu.
3.1 Single Unit Functions
3.1.1 Unit/Fan Control
Start - Stop
The fan output is first activated when the unit is switched On. The unit can be switched On and Off
from two inputs:
• ALARM OFF—The unit has an alarm that has forced the unit to turn Off.
• MANUAL—Unit is being controlled by a service technician using the Service Diagnostics Manual
Mode.
• LOCAL OFF—When a unit is turned Off from the Unit Status Screen, LOCAL OFF is shown for
unit status.
• DISPLAY OFF—When a unit is turned Off from the System Screen of a large display, Display
OFF is shown for unit status.
• ALARM STANDBY—The unit has been rotated into standby because an active alarm on the unit
is present.
• STANDBY—The unit is in standby based on the Lead / Lag settings in the Service Menu.
• TIMER OFF—The unit has been set to Sleep and is waiting for the next start interval. See
User / Sleep Mode Menu.
• UNIT ON—The unit is operating normally without alarm or warning.
• WARNING ON—The unit has an active warning but is still operating. See User / Active alarms
for details.
• ALARM ON—The unit has an active alarm but is still operating. See User / Active alarms for
details.
• TIMER—The unit is configured on a timer to only operate at certain times. See User / Sleep Mode
Menu.
• REMOTE OFF—Remote shutdown terminals will turn Off the connected unit and the front
display shows REMOTE OFF as the status. This command can also be invoked from a BMS.
• MONITORNG OFF—In this case, an override to the monitoring is possible: Pressing the On-Off
button of the display will change the state to Unit Off; pressing again will start the unit in Unit
On.
• BACKDRAFT—The unit is in a non-operational mode, but is operating the EC fan as a backdraft
damper.
Pressing the On/Off key on a stand-alone cooling unit will control only that unit.
The effect of pressing the On/Off key on a large display connected to a network depends on the view:
System or Unit.
• In System view, pressing the On/Off key shows a warning asking for confirmation to shut down
the entire system .
• In Unit view, pressing the On/Off key affects only the unit being viewed, without a confirmation
request.