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Derating curve
Standard mounting (15 mm or more space
between the left and right)
100
80
60
40
20
0
0
10
20
30
40
Ambient temperature (°C)
Backup operation sequence in the event of power failure/voltage drop (instantaneous voltage drop)
When the input power supply recovers while the battery level is sufficiently high
ON
Input power supply
OFF
High
Battery restorage
Low
Empty
ON
Output from UPS
OFF
UPS
Normal operation
operating
Backup operation
mode
ON
＊
BU signal (OUT)
OFF
ON
BL signal (OUT)
＊
OFF
ON
BS signal (IN)
＊
OFF
*
For details, refer to
I/O signal functions on page 26.
When the input power supply recovers while the battery level is Low
Input power supply
ON
OFF
High
Battery restorage
Low
Empty
ON
Output from UPS
OFF
Normal operation
UPS
operating
Backup operation
mode
ON
＊
BU signal (OUT)
OFF
ON
BL signal (OUT)
＊
OFF
ON
＊
BS signal (IN)
OFF
*
For details, refer to
I/O signal functions on page 26.
Contact mounting (Less than 15 mm
space between the left and right)
100
80
60
40
20
0
50
60
0
10
Durling power failure
Durling power failure
20
30
40
50
60
Ambient temperature (°C)
S8BA-SBF
29
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