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BU
2002
RWL/BU
3002
RWL/BU
5002
RWL
3
28
●
Operation after a power failure
• If a power failure or abnormal input power supply occurs, the UPS automatically switches to
Battery Mode, continuing power output from the Power Supply Output terminal block supplied
from the battery.
• The LCD and the beeper’s intermittent sounds alert the user.
See also
“Local Settings” in the menu on the LCD can be used to set the beeper ON/OFF.
Status
indicator
Beep
Output
Description
Solution
Intermittent
4-second
intervals
ON
Backup is operating due to power
failure or AC input error.
Shut down the connected devices to
stop them.
Intermittent
1-second
intervals
ON
Battery level is low, so output will stop
soon.
Intermittent
2-second
intervals
OFF
Battery is dead, so output stopped.
Charge the battery.
●
Operation during recovery from a power failure
• The unit automatically resumes output via commercial power if it recovers from a pow er
failure/input power supply error while it is providing power supply output. The spent battery
starts charging.
• If a power failure or abnormal power input is resolved after the battery is discharged completely
and power output is stopped, the UPS restarts automatically and resumes power output. The
expended battery begins to charge.
See also
“Boot Settings” in the menu on the LCD can be used to enable or disable auto restart.
●
Stop procedure
Operation
Press and hold the power switch of the UPS for 3 seconds or longer.
• The power output from the UPS stops.
• Even if you turn off the power switch, if AC is supplied from commercial power, the battery is
automatically charged.
Status
indicator
Beep
Output Charging
Description
None
OFF
ON
Power switch OFF
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