3 Check and start operation
3-3 Start and stop procedures and basic operation
BN50T/BN75T/BN100T/BN150T/BN220T/BN300T
3-12
Operation after a power failure
1. If a power failure or abnormal input power supply occurs, the UPS automatically
switches to Battery Mode, continuing power output using power supplied from the bat-
tery. (This is called “Battery Mode”).
The following Battery mode screen will be displayed.
Backup-operating state (Battery mode screen):
The icon and the beeper’s intermittent sounds alert the user as shown below.
Icon Beep Output Charging Description Solution
Intermittent
4-second intervals
ON OFF
Discharging
Backup is operating due to
power failure or AC input error.
If Battery Mode continues,
output will stop when the
battery is depleted
Shut down the
connected
devices to stop
them.
Intermittent
1-second intervals
ON OFF
Discharging
None OFF OFF
Discharging
Battery is dead, so output
stopped.
Charge the
battery.
Additional Information
Beeper ON/OFF can be set with “Setting” - “Local Setting” - “Audible Alarm” in the
menu on the LCD.
Operation when a power failure is recovered
When charge of the battery remains
1. If a power failure or abnormal input power supply occurs, the UPS automatically
switches to Battery Mode, continuing power output using power supplied from the bat-
tery.
When charge of the battery does not remain
1. 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.
Additional Information
When the power is restored after a power failure, the UPS is set by default to automatically
restart and supply power.
If you do not want to restart the connected devices, disable the “Settings” - “Boot Settings” -
“Auto Reboot” setting in the menu on the unit's LCD, or turn OFF the power switch of the
connected devices.
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