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6. Using the Contact Signal
6. Using the Contact Signal
(only for BX50FW, BX75SW)
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.
Also, this function is valid only when “connection communication” is selected for the “switching switch”. (See
item 2 on page 34.)
1. Signal output
The UPS has 5 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: NBU
BU stays ON (NBU OFF) during a power failure.
NBU is output only when the”gcommunication con-
nector 9th-pin output signal switching setting” (set-
ting switch 8 ) is set to ON.
●
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.
●
Battery Replacement Signal output (WB)
Goes ON when the battery needs to be replaced due
to deterioration.
WB is output only when the “communication connec-
tor 9th-pin output signal switching setting” (setting
switch 8 ) is set to OFF.
2. Input of the UPS Stop Signal (BS)
Stops the output of the UPS after the time period speci-
fied by the “power output stop delay time setting” (set-
ting switches 5 and 6 ) has elapsed.
(1) When the "UPS Stop Signal setting" (setting switch 7 ) is set to OFF:
You can stop the output of the UPS by inputting the voltage signal (HIGH) that lasts at least 10 seconds
from the outside.
(2) When the "UPS Stop Signal setting" (setting switch 7 ) 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 32
BU-COM ON when a power failure occurs
NBU-COM OFF when a power failure occurs
BL-COM ON when the battery is low
TR-COM ON when a power failure occurs
BS-COM UPS stops
WB-COM ON when battery deterioration is detected