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10 Input Wiring Procedures
10.2 24V DC input (Sink and source input type)
150
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
X0
S/S
Main unit
X1
X0
24+
X1
Input extension block
X0
COM
24+
Input/output powered extension unit
X1
X0
24+
X1
Input extension block
5V 0V 24V
5V 0V 24V
Fuse
5V 0V 24V
5V 0V 24V
Input
impedance
*1
*2
Sink input type
Use of input/output extension units/blocks of sink input type
Class D
grounding
*3
*4
Sink and source
input type
Three-
wire
sensor
Two-wire
proximity
sensor
Input
terminal
Input
terminal
Input
terminal
Input
terminal
Handle the power supply circuit correctly in accordance with Chapter 9 "Preparation for Wiring and Power
Supply Wiring Procedures."
For an input device having a parallel resistance or a two-wire proximity switch, a bleeder resistance may be
required.
In the case of sink input wiring, short-circuit the S/S terminal and the terminal of the main unit.
Do not connect 24+ terminal.
*1
*2
*3
*4