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ErrorLib — Industrial Fault Code Library

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PR2

Parameter set 2 defective

Lenze · 4800/4900 Series

What does PR2 mean?

This fault specifically indicates that user-defined parameter set 2, stored in the drive's memory, has become corrupted or is invalid. By default, this condition is configured as a Warning, meaning it alerts the operator and is logged, but it does not immediately inhibit pulses. Using a defective parameter set can lead to improper drive operation or damage.

Common Causes

  • Corruption of the internal memory block storing parameter set 2.
  • Interruption during the saving process of parameter set 2 (e.g., power loss while writing P9-98 = 2).
  • Attempting to load a parameter set 2 that is incompatible with the current drive's firmware version.
  • Degradation or failure of the drive's non-volatile memory associated with parameter set 2.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Attempt to load an alternative, known good parameter set (e.g., switch to parameter set 1 using P0-02 = 1).

  2. 2

    Try to reload parameter set 2 from an external backup file using the drive's configuration software.

  3. 3

    Manually re-enter critical parameters for set 2, starting with motor data (e.g., P1-01, P1-02, P1-03).

  4. 4

    Execute a factory reset specific to parameter set 2 if available, or reset all parameters (P9-97 = 1) and rebuild set 2.

  5. 5

    Save the currently active parameter values as a new parameter set to overwrite the corrupted area (e.g., P9-98 = 2).

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

ACIarmature circuit interruptedCCrSystem faultCE0Communication Fault (Automation Interface)
Source: Lenze 4800/4900 Series
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