Mitsubishi FX3U Series

FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
174
10 Input Wiring Procedures (Input Interruption and Pulse Catch)
10.2 24V DC Input Type (Common to Sink/Source Input)
10.2.6 Examples of external wiring (sink input) [DC power supply type]
X0
S/S
(0V)
(24V)
Main unit
X1
X0
S/S
X1
Input extension block
X0
S/S
0V
24V
Input/output powered extension unit
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 terminal of
the main unit.
*4 Do not connect with (0V) and
(24V) terminals.
Fuse
5V 0V 24V
5V 0V 24V
5V 0V 24V
Class D
grounding
Input
impedance
Input
terminal
Input
terminal
Input
terminal
Three-
wire
sensor
Input
terminal
*1
*2
Two-wire
proximity
sensor
Sink and source
input type
Class D
grounding
Sink and source input type
*3
*3
*4
*4
Class D
grounding