10
Internal
4) The charging current can be changed from 1A to 6A via LCD or software. Please make sure that
the charging current is suitable to battery specification.
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 sec) 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. Otherwise,
there is a risk of data loss or power failure.
2) In Battery mode, if buzzer sound annoys, users can press the Mute button to mute the buzzer.
3) The backup time depends on the external battery capacity and connected load.
4) The backup time may reduce with higher environment temperature and or load.
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. 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 1s. The buzzer will beep once.
The UPS will turn into Bypass mode.
NOTE 1: If the UPS has been set to enable the bypass output, it will bypass voltage from utility
power to output sockets and terminal even though you have turned off the UPS (inverter).
NOTE 2: After turning off the UPS, please be aware that the UPS is working at Bypass mode and
there is risk of power loss for connected devices.
2) In Bypass mode, output voltage of the UPS is still present. In order to cut off the output, switch
off the input breaker. A few seconds later, there is no display shown on the LCD panel and UPS is
completely switched off.
7. Turn off the UPS without utility power supply in Battery mode
1) Turn off the UPS by pressing “OFF” button for at least 1s, and then the buzzer will beep once.
2) Then UPS will cut off power to output and there is no display shown on the display panel.
3) Disconnect the battery supply.
8. Mute the buzzer
1) To mute the buzzer, please press the “Mute” button for at least 1s. If you press it again after the
buzzer is muted, the buzzer will beep again.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for the
details.
9. Operation in warning status
1) When Fault LED flashes and the buzzer beeps once every second, it means that there are some
warnings in UPS operation. Users can get the fault code from LCD panel. Please check the trouble
shooting table in chapter 4 for details of the warning and initiate corrective action respectively.
10. Operation in Fault mode
1) When Fault LED illuminates and the buzzer beeps continuously, it means that there is a fatal error
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