Omron BU150R, Instruction Manual

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6 The contact signal functions
6-1 Contact signal functions
BU150R
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6 The contact signal functions
6-1 Contact signal functions
You can develop your unique system based on the following specifications 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 Low battery level signal. Also, by inputting the backup
stop signal from the system, you can stop the UPS with a sufficient battery level to prepare
for the next occurrence of a power failure.
For the UPS, two types of contact signal I/O can be used: a contact signal I/O port provided
as standard and an optional contact I/O card.
For details on an optional contact I/O card, see "7-2 Contact I/O card" ( P.90 ).
6-1-1 Type of Output signals
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).
Signals Descriptions
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.