２２
9 Operating mode for all models
9.1 Utility power mode
The display panel in utility power mode is shown in the Utility Power Mode diagram. The
utility power LED and the INV LED are turned on. The load level LEDs will be turned on
in accordance with the load capacity connected.
1) If the battery LED is turned on and the utility power LED flashes, it indicates the
voltage or frequency of the utility power has exceeded the normal range, the UPS
operates in battery mode.
2) If output is overloaded, the load level LEDs will be turned on and alarm will keep
twice every second. You should remove some unnecessary loads one by one to
decrease the loads connected to the UPS until the load less than 90% of its nominal
power capacity.
Note: Please follow the following steps to connect the generator
：
Activate the generator and wait until the operation is stable before supplying
power of the generator to the UPS (be sure that the UPS is in idle mode). Then
turn on the UPS according to start-up procedure. After the UPS is turned on,
then the loads can be connected to the UPS one by one.
The power capacity of the AC generator should be at least twice the UPS
capacity.
9.2 Battery mode
The display of panel in battery mode is shown in the following diagram. The battery LED
and the INV LED are turned on. The displayed number of the battery level LEDs will be
turned on in accordance with the battery capacity. Note that the load level LEDs in utility
power mode will indicate the level of the battery capacity in battery mode instead.
1) When the UPS is running in battery mode, the buzzer beeps once every 4 seconds. If
the “ON” button on the front panel is pressed for more than 1 second, the buzzer will
stop beeping (in silence mode). Press the “ON” button again for more than 1 second
to restore the alarm function.
Fig :The utility power mode
