Contact Signal - Omron Powli BU50SW Instruction Manual

Please note that in the case of incorrect interface voltage signal settings, Windows NT will not
receive the signal from the UPS and the UPS will not stop when there is a power failure.
Failure to put check marks in the boxes will lead to the same result.
5) After the settings are made, double-click the "Service" icon in "Control Panels".
6) Select the UPS service and click the "Start" button.
By starting the alerter service, messenger service, and event log service in advance, the UPS service
sends warning messages to the user and records a history of events such as power failures when
they occur.
When a power failure occurs, Windows shutdown is performed once the Low battery level signal is
detected. If the power is restored before the Low battery level signal is detected, Windows shutdown
is not performed and the normal monitoring state is restored.
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Contact signal

Contact Signal
You can develop your unique system based on the following specifi cations to automate the process at a
power failure. You can perform power-failure processing by allowing the system to detect the backup signal
and also perform system shutdown processing by allowing the system to detect the battery low signal. Also,
by inputting the backup stop signal from the system, you can stop the UPS with a suffi cient battery level to
prepare for the next occurrence of a power failure.
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
BU stays ON 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.
● Battery Replacement Signal output (WB)
Goes ON when the battery needs to be replaced
due to deterioration.
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BU SW / BU
Note
BU-COM ON when a power failure occurs
BL-COM ON when the battery is low
TR-COM ON when a power failure occurs
WB-COM ON when battery deterioration is detected
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SW / BU SW / BU SW
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