Emerson Liebert iCOM Manual De Usuario
Operation
73
Liebert
®
iCOM
®
3.10.4 Liebert iCOM-DO
™
The Liebert iCOM-DO is an optional discrete output relay card that can be connected to a Liebert
iCOM for providing dry alarm contact outputs for monitoring systems. The Liebert iCOM-DO is a
direct replacement of the Liebert ENV-DO
™
card that was supported on previous Liebert control
systems. The Liebert iCOM-DO allows simultaneous use of the Liebert IntelliSlot
®
cards as the
Liebert iCOM-DO communicates over the CANbus network instead of the IGMnet or Velocity
interface.
Liebert iCOM-DO card provides up to 15 configurable alarms through relay outputs. For the ratings
Liebert iCOM-DO card provides up to 15 configurable alarms through relay outputs. For the ratings
and additional data, refer to the Liebert iCOM-DO manual, SL-28096. Each alarm output has three
terminals: N/C, N/O and common. The Liebert iCOM-DO setup can be found in the Service, Liebert
iCOM-DO menu (large display only). The Liebert iCOM-DO is pre-configured and its present is
automatically detected by the Liebert iCOM once it is connected to the CANbus line. The default
alarm configuration matches the original Liebert ENV-DO card alarm mapping.
For information on setting up this relay card, refer to the Liebert iCOM-DO manual, SL-28096,
For information on setting up this relay card, refer to the Liebert iCOM-DO manual, SL-28096,
available at the Liebert Web site:
Table 14
Analog connection control board switch position
Analog Input #
Input #1
Input #2
Input #3
Input #4
Control Board Switch Number
1
2
3
4
5
6
7
8
Analog Input Device Value
0 to 10VDC
Off
Off
Off
Off
Off
Off
Off
Off
0 to 5VDC
On
Off
On
Off
On
Off
On
Off
4 to 20mA
On
On
On
On
On
On
On
On
Switches #9 and #10 not applicable; 4 to 20mA settings supported only for manual fan control.
Table 15
Alarm mapping
#
Alarm
Notes
01
Cooling Status
The output is active when cooling is on.
02
Heating Status
The output is active when heating is on.
03
Humidifying Status
The output is active when humidification is on.
04
Dehumidifying Status
The output is active when dehumidification is on.
05
High Temperature
The output is active when high temperature alarm is active.
06
High Humidity
The output is active when the high humidity alarm is active.
07
Low Temperature
The output is active when the low temperature alarm is active.
08
Low Humidity
The output is active when the low humidity alarm is active.
09a High Head Pressure C1
The output is active when the compressor 1 high head pressure alarm is active.
09b High Head Pressure C2
The output is active when the compressor 2 high head pressure alarm is active.
10
Loss of Airflow
The output is active when a loss of air flow alarm is active.
11
Change Filters
The output is active when a change filter alarm is active.
12
Water Alarm
The output is active when a water alarm is active.
13
Condensing Pump Alarm The output is active when the condensing pump alarm is active.
14
Glycool Status
The output is active when is free-cooling active.
15
Unit On
The output is active the unit is turned On.
An event is active as long as it is not acknowledged. Once acknowledged, an alarm remains active until the event
situation is not true anymore and the event is reset by the board, which switches Off the red LED and the general
alarm relay.