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10 Input Wiring Procedures
10.2 24V DC input (Sink and source input type)
146
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
10.2.3 Examples of external wiring (sink input) [AC Power Supply Type]
X0
S/S
0V
24V
Main unit
N
L
X1
X0
S/S
X1
Input extension block
X0
S/S
0V
24V
Input / output powered extension unit
N
L
X1
X0
S/S
X1
Input extension block
5V 0V 24V
*1 Handle the power supply circuit correctly in accordance with Chapter 9 "Preparation for Wiring and Power Supply Wiring
Procedures."
*2 For an input device having a parallel resistance or a two-wire proximity switch, a bleeder resistance may be required.
*3 In the case of sink input wiring, short-circuit the terminals of the extension units as well as the S/S terminal and the 24V
terminal of the main unit.
*4 The "24V" and "0V" terminals are located on the output terminal side.
For details on the terminal layout, refer to Section 4.7.
Fuse
Class D
grounding
Input
impedance
Input
terminal
Input
terminal
Input
terminal
Three-
wire
sensor
Input
terminal
*1
*2
24V
0V
Two-wire
proximity
sensor
24V0V
Sink and source
input type
*3
*3
Sink and source input type
*4
*4
5V 0V 24V
5V 0V 24V
5V 0V 24V