Omron BU2002RWL Instruction Manual page 57

7
. Using the UPS monitoring software and contact signal
7-4-6. Example of the use of the Contact Signal circuit
● Example of BU signal output circuit and
the connected circuit
Inside of
UPS
● Remote ON/OFF circuit
7-4-7. Precautions and notes for the use of the Contact Signal
● 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.
● 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 ("Settings"
- "Boot Settings" - "Auto reboot" on the LCD) to "disable". (See page 32.)
A relay output type contact signal card is available for separate purchase.
It can be loaded into the option slot on the back of the UPS.
Visit our website for more details.
(URL: http://www.omron.co.jp/ese/)
• Contact signal card (relay output type) ............. Model number: SC08 (sold separately)
45
+12V
+5V
C1
1KΩ
4.7K
C2
TLP521
* C1, C2: 0 pF to several
thousand pF
External
(Consider the capacity
circuit
according to the operating
environment.)
Example of
remote ON/OFF
remote ON/OFF ( + )
remote ON/OFF ( - )
UPS side
● Example of BS signal input circuit and the
connected circuit
To port
on PC
UPS side
Connecting cable
(twisted or shielded)
Notes
Explanation
1K
TLP521
12V
1.2K
BS From port on PC
Ｃ2458
COM
GND
System side