Preparation For Wiring; Wiring Procedures; Removal And Installation Of Quick-Release Terminal Block - Mitsubishi FX3U SERIES User Manual

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
9.1

Preparation for Wiring

9.1.1

Wiring procedures

Before starting wiring work, make sure that the main power is off.
1
Prepare the parts for wiring.
Prepare the solderless terminals and cables necessary for wiring.
2
Wire the power supply terminals.
In the case of AC power supply type
Connect the power supply to the terminals [L] and [N].
In the case of DC power supply type
Connect the power supply to the terminals [
Provide the power supply circuit with the protection circuit shown in this subsection.
3
Wire the ground terminal [
(Class D).
Connect a class D ground wire to the terminal.
4
Wire the input [X] terminals.
For a type (24V DC input type) common to sink/source input, select sink or source input by the
following connection.
In the case of AC power supply type
• For sink input, connect the [24V] and [S/S] terminals.
• For source input, connect the [0V] and [S/S] terminals.
In the case of DC power supply type
• For sink input, connect the [
• For source input, connect the [
Connect sensors and switches to the terminals.
5
Wire the output [Y] terminals.
Connect loads to the terminals.
9.1.2

Removal and installation of quick-release terminal block

Removal Unscrew the terminal block mounting screws [both right and left screws] evenly, and remove the
terminal block.
Installation Place the terminal block in the specified position, and tighten the terminal block mounting screws
evenly [both right and left screws].
Tightening torque 0.4 to 0.5 N m
*Pay attention so that the center of the terminal block is not lifted.
9 Preparation for Wiring and Power Supply Wiring Procedures
] and [
] at a grounding resistance of 100Ω or less
] and [S/S] terminals.
] and [S/S] terminals.
9.1 Preparation for Wiring
→ For details, refer to Section 9.2.
].
→ For details, refer to Section 9.5.
→ For details, refer to Section 9.4 and 9.5.
→ For details, refer to Chapter 10.
→ For details, refer to Chapter 12.
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