Mitsubishi FX3U SERIES User Manual page 178

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
Use of input/output extension units/blocks of sink input type
Sink and source
input type
Sink input type
172
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
Special function block
5V 0V 24V
10 Input Wiring Procedures (Input Interruption and Pulse Catch)
10.2 24V DC Input Type (Common to Sink/Source Input)
L
N
Class D
grounding
S/S
*3
0V
24V
X0
X1
Input
terminal
0V 24V
24+
X0
*2
X1
Input
terminal
L
N
Class D
grounding
COM
24+
X0
X1
Input
terminal
0V 24V *1 Handle the power supply circuit
24+ correctly in accordance with
Chapter 9 "Preparation for Wiring
and Power Supply Wiring
X0
Procedures."
X1
*2 For an input device having a
Input
parallel resistance or a two-wire
terminal
proximity switch, a bleeder
resistance may be required.
24+
*3 In the case of sink input wiring,
24-
short-circuit the S/S terminal and
the 24V terminal of the main unit.
Class D
grounding
Fuse *1
Three-
wire
sensor
Two-wire
proximity
sensor