Eaton Evolution 850 Rack 1U User Manual download pdf (Page 19)

3. Operation

3.1 Start-Up and Normal Operation

3.2 Operation on Battery Power

Transfer to battery power

w The connected devices continue to be supplied

by the UPS when AC input power is no longer

available. The necessary energy is provided by

the battery.

w Button (10) and LEDs (13) and (14) are ON.

w The audio alarm beeps every ten seconds.

The connected devices are supplied by the

battery.

Low-battery warning

w Button (10) and LEDs (13) and (14) are ON.

w The audio alarm beeps every three seconds.

The remaining battery power is low. Shut down

all applications on the connected equipment

because automatic UPS shutdown is imminent.

End of battery backup time

w All the LEDs go OFF.

w The audio alarms stops.

The UPS is completely shut down.

3.3 Return of AC Power

Following an outage, the UPS restarts automatically when AC power returns (unless the restart function was disabled

via UPS personalization) and the load is again supplied.

Press button (10) for approximately 1 second.

w The buzzer beeps once and all the LEDs go ON

simultaneously.

w If AC input power is available, button (10) and

LED (13) are ON. The load is supplied by the

AC-power source. Conditions permitting, the

UPS runs a battery test, indicated by LEDs (11)

and the buzzer.

w If AC input power is not available, button (10)

and LEDs (13) and (14) are ON. The load is

supplied by the UPS on battery power.

The connected devices are protected by the UPS.

If LED (15) is ON, a fault has occurred (see the

"Troubleshooting" section).

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Eaton Evolution 850 Rack 1U User Manual Page 19