Page 10
IR104-V4 User Guide
Rev A
Opto-isolated Inputs (CN4)
There are 20 bi-directional opto-isolated inputs with 3000V protection. They are accessed by a standard 2-row
right-angled 40-pin header, with 0.1" pin spacing. The input voltage ranges from 3V to 24V DC or AC.
For higher input voltage requirements, please contact our Professional Services Team (see "Contact
Information" on page 2) or visit http://www.tri-m.com/support/proservices.html.
PCB TOP VIEW
1
39
CN4
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20
3V to 24V DC or AC input
2 Connectors
2
COM
Ω
Ω
Pull up in PLD
0.1
µF
+5V
4.99 k
4.99 k
Input
Connector
Input
Optocoupler
40
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