FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
171
10 Input Wiring Procedures (Input Interruption and Pulse Catch)
10.2 24V DC Input Type (Common to Sink/Source Input)
1
Introduction
2
Features and
Part Names
3
Product
Introduction
4
Specifications
5
Version and
Peripheral
Devices
6
System
Configuration
7
Input/Output
Nos., Unit Nos.
8
Installation
9
Preparation and
Power Supply
Wiring
10
Input Wiring
10.2.4 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
5V 0V 24V
24-
24+
Special function block
*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.
Fuse
5V 0V 24V
5V 0V 24V
5V 0V 24V
Class D
grounding
Input
impedance
Input
terminal
Three-
wire
sensor
*1
*2
24V0V
Two-wire
proximity
sensor
24V0V
Sink and source
input type
Class D
grounding
Class D
grounding
*3
*3
Sink and source input type
Input
terminal
Input
terminal
Input
terminal