Mitsubishi Electric MELSEC-F FX3G Series User Manual page 157

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
Use of input/output extension units/blocks of sink input type
Sink and source
input type
Sink input type
Handle the power supply circuit correctly in accordance with Chapter 9 "Preparation for Wiring and Power
*1
Supply Wiring Procedures."
For an input device having a parallel resistance or a two-wire proximity switch, a bleeder resistance may be
*2
required.
*3 In the case of sink input wiring, short-circuit the S/S terminal and the
*4 Do not connect 24+ terminal.
Main unit
Input
impedance
5V 0V 24V
Input extension block
5V 0V 24V
Input/output powered extension unit
5V 0V 24V
Input extension block
5V 0V 24V
10.2 24V DC input (Sink and source input type)
Class D
grounding
*3
S/S
X0
X1
Input
terminal
24+
X0
X1
Input
terminal
COM
24+
*4
X0
X1
Input
terminal
24+
X0
X1
Input
terminal
terminal of the main unit.
10 Input Wiring Procedures
Fuse *1
Three-
wire
sensor
Two-wire
proximity
*2
sensor
151
1
2
3
4
5
6
7
8
9
10