Solutions To Common EMC Problems
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10.5 Encoder Feedback Signal Error
Take the measures listed in the following table.
No. Step
1
Route encoder cables and power cables through different routes.
2
When the AC drive is far away from the motor (the motor cable is 10
m), disconnect the grounding terminal (PE) of the encoder shield on
the AC drive side.
3
Install a magnetic ring or ferrite clamp to the encoder signal cable
near the AC drive.
4
Install a magnetic ring to the U, V, and W output cables at the drive
side and wind the cables through the magnetic ring for two to four
turns.
5
Use shielded power cables and ground the shield properly.