4 Check and start operation
4-2 Start and stop procedures and basic operation
S8BA-24D24D
□□□
LF
50
■
The backup sequence when power failure/voltage drop
(instantaneous voltage drop) occures
Explains the backup sequence when a power failure occurs.
●
When the input power supply recovers while the battery level is sufficiently high
0.2 sec
4 sec
*For details, see 7-1 I/O signal functions.
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
Durling power failure
High
Low
Empty
OFF
ON
ON
ON
ON
Battery restorage
Output from UPS
Display of “status
indicator” indicator
Beep
UPS operating mode
“Power” switch
(Remote ON/OFF)
Input power supply
BL signal (OUT)*
BS signal (IN)*
BU signal (OUT)*
Normal operation
Backup operation
