YASKAWA SGD7S Product Manual page 92

4.1 Wiring and Connecting SERVOPACKs
4.1.2 Countermeasures against Noise
Noise Filter Wiring and Connection Precautions
Always observe the following precautions when wiring or connecting Noise Filters.
• Separate input lines from output lines. Do not place input lines and output lines in the same
duct or bundle them together.
Grounding plate
Grounding plate
• Separate the Noise Filter ground wire from the output lines. Do not place the Noise Filter
ground wire, output lines, and other signal lines in the same duct or bundle them together.
Grounding plate
• Connect the Noise Filter ground wire directly to the grounding plate. Do not connect the
Noise Filter ground wire to other ground wires.
Grounding plate
4-8
Incorrect
Noise
Filter
Noise
Filter
Incorrect
Noise
Filter
It is OK if the ground
wire is close to the
input lines.
Grounding plate
Incorrect
Noise
Filter
SERVOPACK SERVOPACK
Shielded ground wire
Grounding plate
Correct
Noise
Filter
Grounding plate
Noise
Filter
Grounding
plate
Separate the circuits.
Correct
Noise
Filter
Correct
Noise
Filter
SERVOPACK SERVOPACK