Omron GRT1 - 11-2007 Operation Manual page 107

Digital I/O Units
Component Names and Functions (Same for GRT1-IA4-1 and GRT1-IA4-2)
Internal Circuits (Same for GRT1-IA4-1 and GRT1-IA4-2)
Wiring
86
Item
OFF response time 55 ms max.
Number of circuits 4 (no common)
It is necessary to share the same neutral AC signal or make
sure that the voltage between two input circuits is 600 V max.
(Refer to Wiring on page 86.)
Insulation resistance 20 MΩ min.
Dielectric strength 2,500 VAC (between AC input circuit and 24-V Unit circuit)
LED indicators
Indicate the Unit's status.
Terminal Block
Base block
Internal circuits
Internal circuits
Perform wiring as shown in the following figure.
Specification
40 ms max.
Test pin
Release button
Terminal insertion hole
Main block
I/O LED
Section 4-6
Terminal block
0A
0B
0B
3A
3B
3B