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5.4
Operating modes
The Eaton 5E front panel indicates the UPS status through the UPS LED indicator.
5.4.1 Normal mode
When the symbol is illuminated in green, the UPS is providing protected AC
power output. The UPS charges the batteries and provides power protection to
your equipment.
5.4.2
Battery mode
When the UPS is operating during a power outage, the alarm beeps once every
five seconds and the indicator illuminates blinking.
The necessary energy is provided by the battery.
When the utility power returns, the UPS transfers to Normal mode operation while
the battery recharges. If battery capacity becomes low while in Battery mode, the
audible alarm beeps faster.
This warning is approximate, and the actual time to shutdown may vary signifi
-
cantly; gracefully shutdown all applications on connected equipment due to immi
-
nent UPS shutdown.
When utility power is restored after the UPS shuts down, the UPS automatically
restarts.
5.4.3
Low-battery warning
• The
indicator blinking quickly.
• The audio alarm beeps every 1.5 seconds.
The remaining battery power is low. Shut down all applications on the connected
equipment because automatic UPS
shutdown is imminent.
5.4.4
End of battery backup time
• All the LEDs go OFF.
• The audible alarm stops.
5.5 Return of AC input power
Following an outage, the UPS restarts automatically when AC input power returns
(unless the UPS is not shut-down by backup end) and the load is supplied again.
