Proline UPS T1000, User Manual

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again, the buzzer will stop beeping (in silence mode). Press the “ON” button once
again for more than 1 second to resume the alarm function.
2) When the battery capacity decreases, the number of the battery capacity LEDs
turned on will be reduced. If the battery voltage descends to the alarm level, the
buzzer will beep once every second to remind the users of insufficient battery
capacity and the UPS is soon going to shut down automatically. Then the load
operations should be carried out promptly and the loads should be eliminated
one by one.
11.3 Bypass mode
The display panel in bypass mode is shown in the following diagram Fig 15.3. The
utility power LED and the bypass LED are lit. The displayed number of the load
LEDs will be turned on in accordance with the load capacity connected. The UPS
will beep once every 2 minutes in bypass mode.
The utility power LED flashes, it shows that the voltage or frequency of the utility
power has exceeded the normal range of the UPS.
1) Other indications on the display panel are the same in utility mode.
2) The UPS does not have the backup function when it is in bypass mode. The
power used by the load is supplied from the utility power via internal filter.
11.4 Abnormality mode
In case the fault LED is turned on when the UPS is in use, it shows that the UPS is
operating in abnormal mode.
Fig 15.2 Battery mode diagram
Fig 15.3 UPS bypass mode diagram