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6. Contact Signal ratings
●Signal output (BL, TR, BU, WB, BU) ●UPS Stop Signal input (BS)
Photo coupler ratings Input voltage HIGH(ON) 5 to 12 VDC
Appliable voltage: 35 VDC or less LOW(OFF) 0.7 VDC or less
Maximum current: 20 mA
●Remote ON/OFF
Voltage between terminals: 5 VDC
Current when closed: max.10 mA
7. Contact Signal circuit inside the UPS
5. Remote ON/OFF connector
Front view
Screw size: Inch screw
#4-40 UNC
Pin assignment Pin number Signal name
1 Remote ON/OFF (+)
2 Remote ON/OFF (-)
8. Example of the use of the Contact Signal circuit
● Example of BU signal output circuit and
the connected circuit
● Example of BS signal input circuit and the
connected circuit
12V1K
TLP627
To port on P
C
BL
TR
BU
WB
BS
COM
2.4V 560Ω
Remote ON/OFF (+)
Remote ON/OFF (-)
5V
10kΩ
COM
UPS side
GND
BS
12V
1K
1.2K
TLP521
To port on PC