Examples Of External Wiring [Dc Power Type] - Mitsubishi Electric MELSEQ FX3S Series User Manual

FX Series Programmable Controllers
3S
User's Manual - Hardware Edition
9.2.4

Examples of external wiring [DC power type]

1. Sink input
Main unit
2. Source input
Main unit
*1. Handle the power supply circuit correctly in accordance with Chapter 8 "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 [S/S] terminal and the [+] terminal of the main unit.
In the case of source input wiring, short-circuit the [S/S] terminal and the [-] terminal of the main unit.
*4. Do not connect with vacant terminal.
*3
S/S
•
*4
•
X0
X1
X2
Input Input
impedance
terminal
*3
S/S
•
*4
•
X0
X1
*2
X2
Input
Input
impedance terminal
9.2 24 V DC input (Sink and source input type)
*1
Fuse
Class D
grounding
Three-wire
sensor
*2
Two-wire
proximity sensor
*1
Fuse
Class D
grounding
Three-wire
sensor
Two-wire
proximity sensor
9 Input Wiring Procedures
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