PowerWalker VFI 6000T LCD - Manual (Page 25)

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5.2.2 Battery mode
The example of LCD display in battery mode is shown in the
following diagram.
Fig. 5-4 Battery mode
When the UPS is running in battery mode, the buzzer beeps once
every 4 seconds.
5.2.3 Bypass with output
The LCD display in bypass mode with output is shown in the
following diagram. The UPS does not have the backup function
when it is in bypass mode. The power used by the load is supplied
from the mains power via internal filter. The UPS will beep once
every 2 minutes in bypass mode.
Fig. 5-5 Bypass mode with output