Speed Search Retry Error

What does 3021 mean?

The speed search function has attempted to retry more times than allowed by the b3-19 parameter. This typically indicates that the speed search settings in b3-17 and b3-18 are not correctly configured for the application, preventing successful speed identification within the set limits.

• Speed search parameters (b3-17: Speed Search Reference, b3-18: Speed Search Start Frequency) are set too far from the actual motor speed.
• Excessive mechanical load or inertia making it difficult for the Drive to match the motor's speed within retry attempts.
• Motor shaft movement or feedback issues (if encoder is used) during speed search, causing inconsistent speed detection.
• Number of speed search retries (b3-19) set too low for the application's starting conditions.
• Motor operating in an unstable state or with significant oscillations during the speed search attempt.

Click steps to track your progress.

1. 1

   1. Verify parameters b3-17 (Speed Search Reference) and b3-18 (Speed Search Start Frequency) are configured to a range that accurately reflects the potential motor speed during start-up.

2. 2

   2. Increase parameter b3-19 (Speed Search Retry Count) to allow the Drive more attempts to match the motor speed.

3. 3

   3. Ensure the motor is not subjected to sudden or extreme load changes during the speed search sequence.

4. 4

   4. If an encoder is used for speed feedback, inspect the encoder wiring and connections for signal integrity.

5. 5

   5. Consider reducing the speed search response time (if available in other parameters) to allow the Drive more time to stabilize before retrying.