MGE UPS Systems 4.5 kVA, 6 kVA, 9 kVA Failure of AC input power and operation on battery power

3. Operation

3.4 Failure of AC input power and operation on battery power

AC input power is not available, the battery steps in to supply the protected equipment.

Transfer to battery power

bypass

20

When AC-power source goes outside tolerances or fails completely, LED 20 goes ON and the buzzer beeps three times.

Threshold for the low-battery shutdown warning

bypass

20

The low-battery shutdown warning threshold can be set by the user, with the "UPS Driver" software (default setting equal to 20% of full backup time).

LED 20 flashes when the setted level is reached.

The buzzer beeps every three seconds when less than 10% of backup time remains.

There is very little remaining battery backup time. Close all applications because UPS automatic shutdown is imminent.

End of backup time

bypass

The buzzer sounds continuously.

Press button 16 to turn the buzzer OFF.

16

The equipment is no longer supplied with power.

Sleep mode

This operating mode may be personalized using the "UPS Driver" software (see section 3.5).

It saves battery power when no equipment is connected to the UPS. Shutdown occurs after 5 minutes. The UPS automatically restarts when the AC-power source returns to within tolerances.

Return of AC input power

If, in spite of the return of AC input power, the UPS does not restart, check that the automatic-restart function (activated by return of AC input power) has not been disabled (see section 3.5).

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