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CENTRIC User Guide, rel. 3.4
29
7.2.2.4
SETUP > MODULES > MODULES OUTPUT CURRENT CALIBRATION
Use this function if it becomes necessary to recalibrate the current readings of one of the UPS's output
phases. The value you enter is sent to all modules, so output current calibration should only be performed
on one module at a time, with all of the other modules turned off. (To turn modules OFF, see section
7.3.1.3 "Operation > Switch on/off > MODULES OFF".)
To perform the calibration, measure the current of the output phase with an ammeter, then enter the
measured value into this screen and press "confirm". When you press "confirm", only the values that you
have modified (indicated by a change in color of the numbers from white to orange) are sent to the module.
For your reference, the present UPS-measured values are displayed on the right side of the screen.
Note:
•
Modules output current calibration should be performed only if necessary, not casually.
•
Modules output current calibration should be performed only under conditions where the input and
output current are stable and not subject to fluctuation.
•
Calibration is best performed when the system is under relatively high load (70+ %).
7.2.2.5
SETUP > MODULES > DC VOLTAGE CALIBRATION
Use this function if it is necessary to recalibrate the reading of the UPS's internal dc voltage. The readings
for the positive and negative components of the dc voltage are calibrated separately, and can be increased
or decreased.
To perform the calibration, measure the internal dc voltage with a voltmeter, then enter the measured value
into this screen and press "confirm". Calibration should be performed only under conditions where the
UPS's input and output currents and voltages are stable and not subject to fluctuation.
7.2.2.6
SETUP > MODULES > AC OUTPUT VOLTAGE ADJ.
Use this function to modify the voltages of the individual output phases of a specific power module. The
phase voltage can be adjusted upward or downward by up to 15 V.
7.2.2.7
SETUP > MODULES > BATTERY VOLTAGE CALIBRATION
Use this function if it is necessary to recalibrate the reading of the battery voltage. The readings for the
positive and negative components of the dc voltage are calibrated separately, and can be increased or
decreased.
To perform the calibration, measure the dc voltage between the UPS's positive battery terminal and neutral
battery terminal, and between the UPS's negative battery terminal and the neutral battery terminal. Enter
the measured values into this screen and press "confirm". Calibration should be performed only under
conditions where the UPS's input and output currents and voltages are stable and not subject to fluctuation.
7.2.2.8
SETUP > MODULES > SERIAL NUMBER
This function enables you to record the serial number of each UPS power module in memory, for easy
reference.
