Njoy Ranger 60KR User Manual page 20

to saving the setting.
15. Operation in setting charger quantity
1) This operation should only be performed by maintenance personnel
or qualified technicians.
2) Turn off the UPS. If the load can not be cut off, you should remove
the cover of maintenance bypass switch on the panel and turn the
maintenance switch to "BPS" position.
3) Switch off the line input breaker and UPS will enter into "No
Output mode".
4) Connect communication cable to the UPS and a computer. Be sure
to install communication tool first. For this software tool, please
NOTE!
The charger quantity setting must coincide with actual number installed in the
UPS. If the setting quantity is more than actual installed quantity, the charging
current will not meet the specification.
3.5 Parallel Operation
1. Parallel system initial startup
Please make sure that all of the running UPSs are parallel models and have
the same configuration.
1) Turn on each UPS in AC mode respectively (Refer to section 3-4(1).
Then, measure the inverter output voltage of each phase for each UPS
with a multi-meter. Calibrate the inverter output voltage by configuring
inverter voltage adjustment (Refer to Program 15, 16 and 17 in section
3-7) in LCD menu until the inverter output voltage difference of each UPS
is within 1V or less.
2) Calibrate the output voltage measurement by configuring output
voltage calibration (Refer to Program 18,19, and 20, section 3-7) in LCD
setting to make sure the difference between real output voltage and
detected value of UPS is less than 1V.
3) Turn off each UPS (Refer to section 3-4(7.). Then, follow the wiring
procedure in section 2-4.
20