Mitsubishi Electric MELSERVO-J4 MR-J4 TM Instruction Manual page 369

Multi-network interface ac servo amplifier

11. OPTIONS AND PERIPHERAL EQUIPMENT

(d) Noise reduction techniques for the network cable

When using it in an environment with excessive noise, directly connect the shield of the network

cable to the ground plate with cable clamp fittings at a place 200 mm to 300 mm or less from the

servo amplifier.

When connecting the network cable from outside the cabinet, connect it to the ground plate at a

place 5 mm to 10 mm away from the cabinet entrance.

To reinforce measures against noise, it is recommended to install a data line filter (TDK ZCAT1730-

0730) to the network cable. Install the data line filter to a place 80 mm or less from the servo

1) For inside the cabinet

a) When using cable clamp fittings

b) When using a data line filter

2) For outside the cabinet

a) When using cable clamp fittings

b) When using a data line filter

Take measures against noise for both ends of the network cable.

Servo amplifier

Cable clamp fitting

200 mm to 300 mm or less

Data line filter

80 mm or less

Cable clamp fitting

Locate 5 mm to 10 mm away

from the cabinet entrance.

Data line filter

80 mm or less