Parameter fault

What does PR mean?

This fault indicates an inconsistency or error within the drive's stored parameter settings. This could be due to corrupted data, an invalid parameter value, or an incorrect parameter set loaded. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Incorrect parameters can lead to improper drive operation or damage.

• Manual entry of an invalid value for a specific parameter (e.g., P1-05 Motor nominal speed set to 0 RPM).
• Parameter corruption due to power fluctuations or internal memory issues.
• Loading an incompatible parameter set from a different drive model or firmware version.
• Automatic parameter calculation resulting in an out-of-range value (e.g., during autotuning sequence).

Click steps to track your progress.

1. 1

   Identify the specific parameter indicated as faulty (often displayed on the drive HMI or via communication software).

2. 2

   Verify the range and valid values for the identified parameter in the drive's instruction manual.

3. 3

   Attempt to restore the identified parameter to its default value using the drive's control panel or software.

4. 4

   Reload a known good parameter set from a previously saved backup file (e.g., via USB or Ethernet connection).

5. 5

   Perform a full factory reset (e.g., set P9-97 = 1) if individual parameter correction is not possible.