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Vertiv
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+24 VDC Power System User Manual (Section 6013)
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Rev. G
93
Calibrating Subsystem (If Connected) Output Voltage Reading
NOTE!
A subsystem is not provided in this power system. The procedure is included for reference only.
Local MCA Control Panel Adjustment Procedure
1.
All controls are located on the MCA Interface Pad. Refer to
2.
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.
3.
Repeatedly press and release the FUNCTION SELECT DOWN arrow pushbutton until "CALIBRATION
MENU" is displayed.
4.
Press and release the FUNCTION SET ENTER pushbutton.
5.
Press and release the FUNCTION SELECT DOWN arrow pushbutton to display "CAL SUB = ##.##V".
6.
Press and release the ALARM CUTOFF and FUNCTION SET ENTER pushbuttons simultaneously. The
CAL SUB =" portion of the display flashes.
7.
Observe the value displayed. This is the subsystem output voltage reading calibration setting. To
change this value, press and hold the FUNCTION SET YES (+) or NO (-) pushbutton. Release the
pushbutton when the desired value is displayed.
8.
With the desired calibration value being displayed, press and release the FUNCTION SET ENTER
pushbutton.
9.
“ARE YOU SURE? + -” is displayed. Press and release the FUNCTION SET YES (+) pushbutton. The
display stops flashing.
NOTE!
The subsystem output voltage reading calibration value will not be changed and the calibration
mode will be exited if the FUNCTION SET YES (+) pushbutton is not pressed within 10 seconds of the
“ARE YOU SURE? +
-” prompt.
10.
Press and release the FUNCTION SET YES (+) and NO (-) pushbuttons simultaneously, to return to the
beginning of the MCA menu tree.