Notes And Explanations For The Use Of Contact Signal I/O - Omron POWLI BN100XR Instruction Manual

5. Contact Signal I/O ratings
● Signal output (BU and BL)
Photo coupler ratings
Applied voltage: 24V DC or less
Maximum current: 20mA
● Signal input (BS)
Input voltage: HIGH 5 to 12V DC, LOW 2.5V DC or less
6. Contact Signal I/O circuit of the SC05 card
7. Example of the use of the Contact Signal I/O circuit
● Example of the use of the BU signal
BU
GND
COM
Connection
Signal
cable (twisted
card side
or shielded)
7-3 Notes and explanations for the use of
contact signal I/O
When connecting a device that generates counter electromotive force, such as a relay to the signal output
circuit, connect a diode to prevent counter electromotive force across the relay.
TLP627
12V 1KΩ
To port on PC
Notes
7. Using the contact signal I/O card
● Example of the use of the BS signal
BS
COM
Signal
Connection
card
cable (twisted
side
or shielded)
49
12V
TLP521
10KΩ
1.2KΩ
From port
on PC
C2458
GND