LEGRAND NUMERIC ONFINITI User And Installation Manual page 14

4. Charge the batteries
After the UPS is connected to the utility power, the charger will automatically charge the batteries, except in
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Battery mode or during battery self-test.
It is recommended to charge the batteries for at least 10 hours before use to ensure optimal performance.
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Otherwise, the backup time may be shorter than expected.
Ensure that the battery number setting on the control board (refer to section 3-4-11 for detailed setting)
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matches the actual battery connection.
The charging current can be adjusted from 1A to 4A via the LCD or software. Please ensure that the charging
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current is suitable for the battery specifications.
5. Battery mode operation:
When the UPS is in Battery mode, the buzzer will beep according to the battery capacity. If the battery
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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 a low
level, and the UPS will shut down automatically soon. Users can switch off some non-critical loads to disable
the shutdown alarm and prolong the backup time. If there are no more loads to be switched off at that time,
you must shut down all loads as soon as possible to protect the devices or save data. Otherwise, there is a
risk of data loss or power failure.
In Battery mode, if the buzzer sound is annoying, users can press the Mute button to mute the buzzer.
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The backup time of the long-run model depends on the external battery capacity.
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The backup time may vary depending on the environmental temperature and load type.
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When setting the backup time for 16.5 hours (default value from the LCD panel), after discharging for 16.5
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hours, the UPS will shut down automatically to protect the battery. This battery discharge protection can be
enabled or disabled through the LCD panel control. (Refer to section 3-7 LCD setting).
6. Turn off the UPS with utility power supply in AC mode:
Turn off the inverter of the UPS by pressing the "OFF" button for at least 1 second, and then the buzzer will
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beep once. The UPS will enter Bypass mode.
NOTE: 1) If the UPS has been set to enable the bypass output, it will bypass voltage from the utility power
to the output sockets and terminals even though you have turned off the UPS (inverter).
2) After turning off the UPS, please be aware that the UPS is operating in Bypass mode, and there is a risk
of power loss for connected devices..
In Bypass mode, the output voltage of the UPS is still present. To cut off the output, switch off the input breaker.
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After a few seconds, there will be no display shown on the LCD panel, and the UPS will be completely off.
7. Turn off the UPS without utility power supply in Battery mode:
Turn off the UPS by pressing the "OFF" button for at least 1 second, and then the buzzer will beep once.
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Then, the UPS will cut off power to the output, and there will be no display shown on the display panel.
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8. Mute the buzzer:
To mute the buzzer, press the "Mute" button for at least 1 second. If you press it again after the buzzer
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is muted, the buzzer will beep again.
Some warning alarms can't be muted unless the error is fixed. Please refer to section 3-3 for the
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details.
9. Operation in warning status:
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When the Fault LED flashes, and the buzzer beeps once every second, it means that there
are some problems with UPS operation. Users can get the fault code from the LCD panel.
Please check the troubleshooting table in chapter 4 for details.
Some warning alarms can't be muted unless the error is fixed. Please refer to section
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3-3 for the details.