User`s manual

Wiring Installation

MELSEC System Q, Hardware 9 – 21

Wiring of I/O equipment

● The wires used for connection to the terminal block must be 0.3 to 0.75 mm

in core

● Run the input and output lines away from each other.

● Do not lay I/O signal cables close to the main circuit and high-voltage power lines. Keep a

safe distance of more than 100 mm from the above.

● When the input and output lines cannot be run away from the main circuit and power lines,

use a batch-shielded cable. Normally the shield of the shielded cable must be grounded on

the module side.

● Where wiring runs through piping, ground the piping.

● Run the 24 V DC input line away from the 110 V AC and 230 V AC lines.

E000318C

Fig. 9-20: Wiring of I/O equipment

NOTE

Wiring of 200 m or longer will raise current leakage due to the line capacity, resulting in a

fault.

PLC

Shielded cable

Input

LOAD

Output