Datasheet

S8BA
6
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
Contact signal circuit
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.
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.
In addition, it is necessary to turn on the "Power" switch of UPS to use this function.
Outlook of the connector Pin number Item
1 Backup signal output (BU)
2 Remote ON/OFF input (-)
3 Trouble signal output (TR)
4 COMMON (COM)
5 Battery LOW signal output (BL)
6 Backup stop signal input (BS)
7 Battery Replacement Signal output (WB)
8 Remote ON/OFF input (+)
Signal Description
Signal output (BL, TR, BU, WB)
• Applicable voltage: 50 VDC or less
• Maximum current: 360 mA
Remote ON/OFF
• Voltage between terminals: 5 VDC
• Current when closed: 10 mA max.
UPS Stop Signal input (BS)
• Input voltage: HIGH (ON) 8 to 24 VDC
LOW (OFF) 0.5 VDC or less
• Input current: 1.7 to 5.1 mA
Signal output (BL, TR, BU, WB) Remote ON/OFF
UPS Stop Signal input (BS)
BL
TR
BU
WB
BS
COM
4.7 kΩ
5 V
680 Ω
Rmote ON/OFF (+)
Rmote ON/OFF (–)