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S8BA-SBF
26
I/O signal functions
Type of output signals
Type of input signals
*
BS signal delay time
It is possible to set the period of time from when a BS signal is received until the output of the UPS is stopped. The output of the UPS can be
stopped by inputting the voltage signal (High).
I/O signal port (RJ45 connector)
Contact signal ratings
Signal
Description
Backup signal output (BU)
Stays ON during backup operation at a power failure.
Low battery level signal output (BL)
Goes ON when the battery becomes weak during backup operation at a power failure.
Trouble signal output (TR)
Goes ON when an internal failure of the UPS occurs or when the battery life counter expires.
Battery replacement signal output (WB)
Goes ON when the test determines that battery replacement is necessary due to deterioration
or when the battery life counter goes off-scale. (The battery life counter goes on counting during
the input power is being supplied.)
Signal
Description
Input of the UPS stop signal (BS)
When the BS signal is ON (High), the output of the UPS is stopped after the time period specified
in advance has elapsed.*
Remote ON/OFF signal
Remote ON/OFF signals can be used to start and stop the UPS, by using either an externally
connected contact or the ON/OFF status of the open collector circuit. When signal is OFF, the
UPS will be turned on. When signal is ON, the UPS will be turned off.
In the factory settings, the UPS stops operation when this is short-circuited.
You must connect the unit to the input power supply to be able to use this function.
Outlook of the connector
Pin number
Cable color
Item
1
White/orange
Backup signal output (BU)
2
Orange
Remote ON/OFF input (-)
3
White/green
Trouble signal output (TR)
4
Blue
COMMON (COM)
5
White/blue
Battery LOW signal output (BL)
6
Green
Backup stop signal input (BS)
7
White/brown
Battery Replacement Signal output (WB)
8
Brown
Remote ON/OFF input (+)
Signal
Description
Signal output (BL, TR, BU, WB)
•
Applicable voltage: 50 VDC or less
•
Maximum current: 500 mA
•
BU signal min. response time: 10 ms
Remote ON/OFF
•
Voltage between terminals: 3.3 VDC
•
Current when closed: 10 mA max.
•
Min. signal response time: When stopped 100 ms
When restarting 300 ms
UPS Stop Signal input (BS)
•
Input voltage: HIGH (ON) 8 to 24 VDC
LOW (OFF) 0.5 VDC or less
•
Input current: 250 mA
•
Min. signal response time: When stopped 100 ms
When restarting 300 ms
Pin number1
Pin number8