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Service Menu Parameters
77
Figure 65 Diagnostics/service mode screen, page 4 of 8
Alarm Relay—Activates the Liebert iCOM’s common alarm relay output.
K11 Relay—Activates the Liebert iCOM’s free-cooling relay output.
3P 1/2 Actuator Open—Energizes the open circuit of the 3P type chilled or free-cooling control
valve.
3P 1/2 Actuator Close—Energizes the close circuit of the 3P type chilled or free-cooling control
valve.
BV Control—Activates the following two items allowing the motorized ball valve to be manually
opened or shut.
MBV1 Position—Specifies the percentage valve 1 should be open. Range is 0 to 100%.
MBV2 Position—Specifies the percentage valve 2 should be open. Range is 0 to 100%.
Analog Out 1, 2, 3 & 4—Specifies the analog output percentage subsequently controlling the device
connected to that output. Range is 0 to 100% but also depends on the output’s assignment in factory
settings.
NOTE
When BV control is set to Auto, the MBV position will be adjusted to the set value, but the
pressure control algorithm will immediately begin adjusting the valve to control the condenser
pressure. When BV control is set to manual, the MBV position will be maintained as set.
Emerson recommends against manually setting the MBVs during compressor operation
because it might cause the compressor to trip on its high- or low-pressure protection controls.