Omron S8BA-24D24D480SBF, Руководство пользователя

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7 Using the I/O signal functions
7 - 2 S8BA-series Uninterruptible Power Supply (UPS) User’s Manual (U726)
7-1 I/O signal functions
z About contact signal
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 (BU) and also perform system shutdown processing by allowing the system to detect
the low battery level signal (BL). Also, by inputting the backup stop signal (BS) from the system, you
can stop the UPS with a sufficient battery level to prepare for the next occurrence of a power failure.
The UPS has 4 kinds of output signals.
The output circuit consists of an open collector circuit using a photo coupler.
The UPS has 2 kinds of input signals.
7-1-1 Type of output signals
Signal Description
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 it is detected that the battery lifespan
has expired or the battery has deteriorated. (The bat-
tery life counter goes on counting till the time the input
power is being supplied.)
7-1-2 Type of input signals
Signal Description
UPS Stop Signal input (BS) When the BS signal is ON (High), the output of the
UPS is stopped after the time period specified in
advance has elapsed
*1
.
*1. BS signal delay time
It is possible to set the period of time from when a BS signal is received until the output of the UPS is stopped.
The output of the UPS can be stopped by inputting the voltage signal (High).
Remote ON/OFF signal Remote ON/OFF signals can be used to start and stop
the UPS, by using either an externally connected con-
tact or the ON/OFF status of the open collector circuit.
When signal is OFF, the UPS will be turned on. When
signal is ON, the UPS will be turned off.
In the factory settings, the UPS stops operation when
this is short-circuited.
You must connect the unit to the input power supply to
be able to use this function.