Omron GRT1-ML2 Hardware Reference Manual page 133

Hardware reference
Power supply input
The external wiring terminal supplies 24 VDC to the I/O module.
/i
Terminal name Function
DC24V +24 VDC
DC0V 0 VDC
FG Protective ground terminal
Specification
Input circuit:
The input circuit specifications are shown below. The input circuit is used
both for IO2310, and IO2330 modules.
/i
Item Specifications
Number of input points 64 points (32 points x 2)
Input type Sinking or sourcing
Isolation method Photocoupler
Input voltage 24 VDC (20.4 to 28.8 VDC)
Input current 5 mA/point
on voltage/current 9V min./1.6 mA min.
off voltage/current 7V max./1.3 mA max.
on time / off time on time: 2ms, off time: 3 ms
Output points per common 16 points per common (1 to 16, 17 to 32, 33 to 48, 49 to
64)
HARDWARE REFERENCE MANUAL
fig. 78
24 VDC
0 VDC
fig. 79
+ 5V
680 Ω 0.01 µF
4.7 kΩ
Input Circuit
128