Forza Elipse Series, Руководство по обслуживанию

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5.2.2 Calibration
In most case, The UPS works in good condition and the output and internal parameter are as
precise as the specification definition. However, due to PCB or part replacement or firmware or
hardware update executed. The UPS need to be calibration to achieve most precision. Following
are the common procedure to calibrate a UPS, Major parameter need to calibrate includes:
Positive Bus voltage, Negative Bus voltage, and Inverter output voltage.
1. Calibration should be carry out under condition that UPS work on unitary mode
2. Prepare Hyper terminal and communication connection as stated in previous section.
3. If the UPS is working, disassembly the cover the UPS maintenance bypass switch (MBS turn
MBS from “UPS” state to “BPS” state.
(Note: the UPS will transfer to bypass mode automatically after disassembly the cover of the
MBS, but for most safety, check the UPS status on the LED display, if the UPS does to
transfer to bypass mode automatically, operation the panel to turn the UPS off to bypass
before the turn the MBS)
4. Switch off the mains input breaker on the rear panel of the UPS. Disconnect battery input.
5. Disassembly the top cover & left side cover of the UPS, make DC-BUS capacitor be
accessible.
6. Assembly the MBS cover back to place.
7. Switch on mains input breaker on the rear panel of the UPS. Connect battery input to the
UPS.
8. Turn on the UPS, observe the UPS transfer to line mode.
9. Measure the positive BUS (+Bus) with a multimeter, If the voltage of the +BUS is within Target
value of 360V+/-1V for 230V output, and 345+/-1V for 220V output, so calibration of +BUS is
not needed, neglect this step, otherwise, send a BUSP+00 to reset the calibration, then
Increase the +BUS voltage with BUSP+xx, or decrease the +BUS voltage with PBUS-xx
command according to real situation need. 1 represent about 0.5V.
10. Measure the negative BUS (-Bus) with a multimeter, If the voltage of the -BUS is within Target
value of 360V+/-1V for 230V output, and 345+/-1V for 220V output., so calibration of -BUS is
not needed, neglect this step, otherwise, send a BUSN+00 to reset the calibration, then