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6. Using the Contact Signal
6. Using the Contact Signal
You can develop your unique system based on the following specifications to automate the process at the
power failure.
Your can perform power-failure or closing procedure of the system by detecting the Backup Signal and the
Battery Low Signal, or receive failure notification by detecting the Trouble Signal.
You can stop the UPS by inputting the UPS Stop Signal from the system, and remote control start and stop of
the UPS by using the Remote ON/OFF Signal.
1. Signal output
The UPS has 4 kinds of output signals. The output circuit consists of an open collector circuit using a photo
coupler (a kind of electronic switch).
●
Backup Signal output: BU
Backup Signal reverse output: BU
BU stays ON (BU OFF) during a power failure.
●
Battery Low Signal output: BL
Goes ON when the battery becomes weak during the
Battery Mode.
●
Trouble Signal output: TR
Goes ON when an internal failure of the UPS occurs.
2. Input of the UPS Stop Signal (BS)
Stops the output of the BX75XS2 after the time period specified by the "power output stop delay time
setting" (setting switches 1 and 2 ) has elapsed.
(1) When the "UPS Stop Signal setting" (setting switch 4 ) is set to OFF:
You can stop the output of the BX75XS2 by inputting the voltage signal (HIGH) that lasts at least 10
seconds from the outside.
(2) When the "UPS Stop Signal setting" (setting switch 4 ) is set to ON:
You can stop power output by inputting the voltage signal (HIGH) that lasts at least 0.01 second (10
ms) from the outside that is accepted only during backup.
See also
"4-7 Changing the setting of the functions"
➛
Pages 23 and 24
3. Remote ON/OFF Signal
You can start and stop the UPS depending on the contact connected
to the outside and the ON/OFF status of the open collector circuit.
To use this function, turn on the Power Switch of the UPS.
4. Connection to the system
Please make a cable to connect to the system by yourself.
See also
"8. Example of the use of the Contact Signal circuit"
➛
Page 33
BU-COM ON when a power failure occurs
BU-COM OFF when a power failure occurs
External contact
Operate
Open
Start
Close
Stop
BL-COM ON when the battery is low
TR-COM ON when a power failure occurs
BS-COM ON when a failure occurs
