Omron BU100RS - Example of the Use of the Contact Signal Circuit; Precautions and Notes for the Use of the Contact Signal

6 Contact signal functions
6-1 Contact signal functions
BU100RS
82
6-1-7 Example of the use of the Contact Signal circuit
● Example of BU signal output circuit and
the connected circuit
● Example of BS signal input circuit
and the connected circuit
To port
on PC
4.7K
TLP521
Inside of
UPS
External
Circuit
+12V
1KΩ
C2
C1
+5V
C1,C2 : 0 pF to several
thousand pF
(Consider the capacity according to the
operating environment.)
*
COM
UPS side
GND
C2458
BS
From port on PC
12V 1K
1.2K
TLP521
System side
Connecting cable
(twisted or shielded)
● Remote ON/OFF circuit
Example of
remote
ON/OFF
Remote
ON/OFF (+)
Remote
ON/OFF (-)
UPS side
6-1-8 Precautions and notes for the use of the Contact
Signal
Notes
When connecting a device such as a relay that generates counter
electromotive force to the signal output circuit, connect diodes that prevent
counter electromotive force to both ends of the relay.
Explanation:
● When power is restored after the unit stopped automatically during a power failure,
the unit automatically restarts and supplies power. If you do not want to start the
connected devices, turn OFF their switches or set the auto startup setting after
recovery from power failure (“Setting” switch 2) to ON (Auto startup is not
performed).