Omron S8BA-24D24D960SBF User Manual page 53

4 Operations
For shutdown by a BS signal
Input power supply
Battery restorage
Output from UPS
UPS
Normal operation
operating
mode
Backup operation
BU signal (OUT) *1
*1
BL signal (OUT)
BS signal (IN) *1
*1. For details, refer to 7-1 I/O signal functions on page 7-2.
Input and output voltage time chart when shifting to backup opera-
tion
Explains the operation when shifting to backup operation due to power failure or input voltage drop.
24 VDC
DC voltage
22 VDC
18 VDC
4 - 8
ON
OFF
High
Low
Empty
ON
OFF
ON
OFF
ON
OFF
ON
OFF
power failure or input voltage drop
S8BA-series Uninterruptible Power Supply (UPS) User's Manual (U726)
Durling power failure
28V
21V
Output voltage
Input voltage