3-4
Digital I/O Unit
This section describes the Digital I/O Unit.
3-4-1
Models and Specifications
Models and Outline of Specifications
The models and outline of specifications are given below.
Unit type Model Number of inputs Number of outputs I/O type
Digital I/O Unit CK3W-MD7110 16 points 16 points NPN
CK3W-MD7120 16 points 16 points PNP
Specifications
Digital input
(NPN/PNP)
Number of inputs 16 points
Rated input voltage 24 VDC
Maximum input voltage 26.4 VDC
Input current 3.9 mA typical (24 VDC)
ON voltage/ON current 15 VDC min./3 mA min.
OFF voltage/OFF current 5 VDC max./1 mA max.
ON/OFF response time 20 μs max./400 μs max.
Isolation method Isolation by Photocoupler (between input and internal cir-
cuit)
Circuit configuration NPN type
IN00
IN01
IN15
V1
V1
Current
control circuit
Current
control circuit
Current
control circuit
Internal
circuit
3 Configuration Units
3-45
CK3M-series Programmable Multi-Axis Controller User's Manual Hardware (O036)
3-4 Digital I/O Unit
3
3-4-1 Models and Specifications