FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
169
9 Preparation for Wiring and Power Supply Wiring Procedures
9.2 Cable Connecting Procedures
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
9.2 Cable Connecting Procedures
For cable connection, a terminal block or a connector is used. The cable connecting procedures are explained
below.
9.2.1 Input/output terminal block (power supply and input/output wiring)
For the main unit, FX2N Series input/output powered extension units/blocks and FX0N/FX2N/FX3U Series
special function units/blocks, an M3 or M3.5 screw terminal block is used.
1. Applicable products
2. Terminal block screw size and tightening torque
The size of the terminal screws for each product is shown below. For the solderless terminals, refer to the
following page.
WIRING PRECAUTIONS
• Make sure to cut off all phases of the power supply externally before attempting installation or wiring work.
Failure to do so may cause electric shock or damage to the product.
• Make sure to attach the terminal cover offered as an accessory to the product before turning on the power or
starting the operation after installation or wiring work.
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
• Make sure to properly wire the FX3U Series main unit and FX0N/FX2N/FX3U Series extension equipment in
accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
• Make sure to properly wire to the FX Series terminal blocks in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or
damage to the product.
- The disposal size of the cable end should follow the dimensions described in the manual.
- Tightening torque should follow the specifications in the manual.
Product type Model name
Main unit All models of FX3U Series main units
Input/output powered extension unit All models of FX2N Series input/output powered extension units
Input/output extension block
All models of FX
2N Series input/output extension blocks
(except for the FX2N-16EX-C, FX2N-16EXL-C and FX2N-16EYT-C)
Extension power supply unit FX3U-1PSU-5V
Special function unit/block Refer to the manual for each product.
FX Series terminal block All models
Power supply unit FX
2N-20PSU
Product Terminal screw Tightening torque
Main unit
FX2N Series input/output powered extension units
FX2N Series input/output extension blocks
M3
0.5 to 0.8N•m
FX Series terminal block M3.5
Special function unit/block Refer to the manual for each product.
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