3 Checking and starting the operation
3-5 Charging the battery
BU5002R/BU3002R/BU3002RH
92
(2) When the UPS is shut down by BS signal while the AC input is ON
Start up when BS signal
turns OFF
Start up when AC input turns
f rom OFF to ON
Note 5: When set to 9999 seconds, the BS signal is disabled.
3-5 Charging the battery
The battery automatically starts charging when the unit is connected to a commercial
power source.
(This occurs regardless of whether the power switch is ON or OFF.)
The charging takes 8 hours to complete. And every time an expansion battery unit is
connected, the charging time is increased by 16 hours for each unit.
● The unit was charged before shipment, but it may have self-discharged during shipment,
resulting in a reduced backup time. We recommend charging the unit before use.
3-6 Measuring the initial value of backup time
● The initial backup time value measured in your environment of use can be used as a
guide when checking the battery and deciding the shutdown software setting values.
“4-3. Measuring the backup time” → Page 96
