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Vertiv
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+24 VDC Power System User Manual (Section 6013)
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Rev. G
64
Relay #5 = Battery On Discharge Alarm
Relay #6 = AC Fail Major Alarm
Relay #7 = AC Fail Alarm
Relay #8 = LVD Alarm
Relay #9 = Test/Equalize Mode 1
10.
Press and release the FUNCTION SET YES (+) and NO (-) pushbuttons simultaneously, to return to the
beginning of the MCA menu tree.
Setting MCA Audible Alarm Cutoff Reset Time Period
A local (if equipped with List 71) or external audible alarm may be connected to the power system. This alarm
sounds when any alarm condition monitored by the MCA occurs. The alarm can be manually silenced (cutoff)
by pressing a local pushbutton. A local indicator illuminates when the audible alarm has been cutoff. The alarm
remains silenced for the current alarm condition only. If another alarm condition occurs, the audible alarm again
sounds.
A programmable audible alarm cutoff reset feature is provided. Once an audible alarm has been cutoff, it
automatically resets (and sounds if the alarm condition is still present) after the time period programmed
expires. If the audible alarm is again cutoff while the same alarm condition is still present, the reset feature is
inoperable, and the audible alarm remains silenced. If another alarm condition occurs, the audible alarm again
sounds.
NOTE!
The audible alarm feature is not available when power system is equipped with a List 12 or List
13 MCA.
The MCA Audible Alarm Cutoff Reset feature is active when a "NAG MINUTES" value is selected.
The MCA Audible Alarm Cutoff Reset feature is inactive when "AUDIBLE NAG OFF" is selected.
Procedure
1.
With "SYSTEM OK" being displayed on the MCA Interface Pad, press and release the FUNCTION SET
ENTER pushbutton.
or
With "## ALARMS ACTIVE" being displayed on the MCA Interface Pad, press and release the
FUNCTION SET ENTER pushbutton. Repeatedly press and release the FUNCTION SELECT DOWN
arrow pushbutton until "FUNCTION MENU" is displayed. Press and release the FUNCTION SET ENTER
pushbutton.
2.
Repeatedly press and release the FUNCTION SELECT DOWN arrow pushbutton until "CONFIGURE
MENU" is displayed.
3.
Press and release the FUNCTION SET ENTER pushbutton.
4.
Repeatedly press and release the FUNCTION SELECT DOWN arrow pushbutton until "NAG MINUTES =
##" or "AUDIBLE NAG OFF" is displayed.
5.
Press and release the ALARM CUTOFF and FUNCTION SET ENTER pushbuttons simultaneously. The
"NAG MINUTES =" portion of the display flashes.