FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
194
10 Input Wiring Procedures (Input Interruption and Pulse Catch)
10.2 24V DC Input Type (Common to Sink/Source Input)
X0
S/S
0V
24V
Main unit
N
L
X1
X0
24+
X1
Input extension block
X0
COM
24+
Input / output powered extension unit
N
L
X1
X0
24+
X1
Input extension block
5V 0V 24V
5V 0V 24V
24+
Special function block
Fuse
5V 0V 24V
5V 0V 24V
5V 0V 24V
Class D
grounding
Input
impedance
Input
terminal
Three-
wire
sensor
*1
*2
24V
0V
Two-wire
proximity
sensor
24V
0V
Sink and source
input type
Sink input type
*3
Use of input/output extension units/blocks of sink input type
*1 Handle the power supply circuit correctly according to Chapter 9 "Preparation for Wiring and Power Supply Wiring
*2 For an input device with a parallel resistance or a two-wire proximity switch, a bleeder resistance may be required.
*3 In case of sink input wiring, short-circuit the S/S terminal and the 24V terminal of the main unit.
Input
terminal
Input
terminal
Input
terminal
24-
Procedures."
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