Encoder not ready to operate (_ecENCODER_NOT_READY)

What does 10028 mean?

This fault indicates the drive's serial encoder is not providing position data, either because it's still initializing, or its configured resolution doesn't match the drive. This will prevent axis operation, leading to a crash stop and disabling of the axis, posing a risk of uncontrolled motion if not addressed.

• Encoder initialization sequence not completed due to power-up timing issues.
• Encoder resolution (e.g., parameter P4-05) configured in the drive does not match the actual encoder's resolution.
• Encoder feedback cable damage (e.g., broken data lines or short circuit) preventing proper data transmission.
• Incorrect encoder type selected in drive parameters (e.g., P4-01 set to incremental instead of BiSS/SSI).
• External electromagnetic interference near the encoder or its cable causing data corruption during startup.

Click steps to track your progress.

1. 1

   1. Verify the encoder cable integrity by performing a continuity test on all conductors from drive connector to encoder connector.

2. 2

   2. Power cycle the drive and encoder, then monitor drive status for encoder initialization completion.

3. 3

   3. Compare the encoder resolution setting (P4-05) in the drive with the actual encoder's datasheet specification.

4. 4

   4. Confirm the encoder type parameter (P4-01) matches the installed serial encoder's communication protocol.

5. 5

   5. Use an oscilloscope to verify data line signals (e.g., BiSS data, clock) at the drive's encoder input terminals during startup.

6. 6

   6. Check for proper shielding termination of the encoder cable at both the drive and encoder ends.