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3. Connect devices to UPS
After the UPS is turned on, you can connect devices to the UPS.
1) Turn on the UPS first and then switch on the devices one by one. The LCD panel will display total
load level.
2) If it is necessary to connect the UPS to the inductive loads such as a printer, the in-rush current
should be calculated carefully in case that it meets the maximum capacity of the UPS because of
the high power consumption of this kind of load.
3) If the UPS is overload, the buzzer will beep twice every second.
4) When the UPS is overload, please remove some loads immediately. It is recommended to have the
total loads connected to the UPS less than 80% of its nominal power capacity to prevent overload
for system safety.
5) If the overload time exceed acceptable duration listed in spec at AC mode, the UPS will be
automatically transferred to bypass mode. After the overload device is removed, it will return to AC
mode. If the overload time exceeds acceptable duration listed in spec at battery mode, the UPS will
show fault status. At this time, if bypass is enabled, the UPS will power the load via bypass. If
bypass function is disabled or the input power is not within acceptable range of bypass mode, it will
cut off the connection of output directly.
4. Charge the batteries
1) After the UPS is connected to the utility power and turned on in AC mode, the charger will charge
the batteries automatically except in Battery mode, during battery self-test, overload or high
battery voltage duration.
2) Be sure to charge batteries at least 10 hours before operation. Otherwise, the backup time may be
shorter than expected time.
3) Make sure the battery numbers set on the control board (Please refer to the section 3-4-12 for
detailed setting) is consistent to real connection.
5. Battery mode operation
1) When the UPS is in Battery mode, the buzzer will beep according to different battery capacity. If the
battery capacity is more than 25%, the buzzer will beep once every 4 seconds; If the battery
voltage drops to the alarm level, the buzzer will beep quickly (once every second) to remind users
that the battery is at low level and the UPS will shut down automatically soon. Users could switch
off some non-critical loads to disable the shutdown alarm and prolong the backup time. If there is
no more loads to be switched off at that time, it’s suggested to shut down all loads as soon as
possible to protect the devices or save data. Otherwise, there is a risk of data loss or load failure.
2) In Battery mode, if buzzer sounds annoying, users can press the Mute button to disable the buzzer.
3) The backup time of the long-run model depends on the capacity of external battery.
4) The backup time may vary from different environmental temperature and load type.
5) When setting backup time for 16.5 hours (default value from LCD panel), after discharging 16.5
hours, UPS will shut down automatically to protect the battery. This battery discharge protection
can be enabled or disabled through LCD panel control. (Refer to 3-7 LCD setting section)
6. Test the batteries
1) If you need to check the battery status when the UPS is running in AC mode/CVCF mode, you can
press the “Test” button to activate battery self-test of the UPS.
2) Users also can set battery self-test through monitoring software.
7. Turn off the UPS with utility power supply in AC mode
1) Turn off the inverter of the UPS by pressing “OFF” button for at least 0.5s, and then the buzzer will
beep once. The UPS will turn into Bypass mode.
NOTE 1:
If the UPS is set to enable the bypass output, it will bypass voltage from utility power to
output terminal even though the UPS (inverter) is off.
