Emerson Liebert iCOM, Manual

Page: 72 / 172

Operation
Liebert
®
iCOM
®
for Liebert DSE
™
64
3.9.3 Analog Inputs
The Liebert iCOM allows an external sensor or analog device to be connected, scaled and viewed. See
Table 17 for output availability by unit type. These external devices require optional analog input
connections that can be installed on new units at the factory or added to existing units in the field.
The option provides the electrical connection from the Liebert iCOM control board to the cooling unit’s
field-wiring connection area. If a Liebert unit is equipped with this option, then a 0-10VDC, 0-5VDC
or a 4-20mA device can be connected to terminals 41 and 42, 43 and 44, 45 and 46 or 47 and 48. See
Table 17 for analog input availability.
Follow the settings illustrated in Figure 46 and Table 18 to set the input type based on the sensor
output being used. The default analog input is 0-5VDC. Only properly trained and qualified service
technicians should change the analog input type.
Figure 46 Analog connection control board switch
Table 17 Number of analog inputs
Unit Type
Number of Analog Inputs
Liebert DSE Air-Cooled (DX) 2; two used for suction pressure management
NOTE
This option is not available on fluid-cooled units. Fluid-cooled units use all four
analog inputs for low and high refrigerant pressure management.
Table 18 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
Switches #9 and #10 not applicable to Liebert CW or to Liebert DS.
On
Off
Switch Position
Switches #9 and #10 not
applicable to Liebert CW
or to Liebert DS