Inovance MD500-PLUS Series - Encoder Feedback Signal Errors

Troubleshooting for Common EMC Interference Problems
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Step
Action
5
Check that any cable between two nodes is within 100 m in
length.
6
Add a ferrite clamp at each end of the communication cable and
wind the communication cable for one to two turns.
7
Wind the output U/V/W cables of the AC drive on a magnetic ring
for two to four turns.
8
Use a shielded power cable and ensure that the shield is well‑
grounded.
9.6 Encoder Feedback Signal Errors
Follow the following table for troubleshooting.
Step
Action
1
Route the encoder cable and power cable in different cable ducts.
2
When the AC drive is far away from the motor (the motor cable is as
long as 10 m), disconnect the grounding (PE) terminal from the
encoder shield on the AC drive side.
3
Add a magnetic ring or ferrite clamp for the encoder signal cable close
to the AC drive.
4
Wind the output U/V/W cables of the AC drive on a magnetic ring for
two to four turns.
5
Use a shielded power cable and ensure that the shield is well‑
grounded.