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9.8
Noise reduction techniques
This section provides information on measures that prevent the drive unit malfunctioning when it is installed next to peripheral
devices that emit a large amount of noise.
Ground shielded cables close to the drive unit. Ensure that the part of the cable before the grounding point does not induce
electromagnetic noise to the section of the cable after the grounding point. Strip part of the shielded cable, then ground the
exposed portion of the cable on a large surface of the cabinet. A metal cable clamp can also be used to ground the cable
(shown below). Mask the painted internal wall of the cabinet that touches the cable clamp.
• Exposed shield
Shielded part
• Grounding the shield
Masked paint
part
Ground the both ends of the CN8 cable with the cable clamp. The shield length from the drive unit to the cable clamp should
be within 30 cm.
Inside the cabinet
Cable
clamp
CN8
Converter unit
Drive unit
Screw
Clamp fitting
Shielded cable
20 cm to 30 cm
9 USING FUNCTIONAL SAFETY
9.8 Noise reduction techniques
9
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