Parameter Setting Error

What does OPR mean?

This fault indicates that one or more parameters in the inverter have been set to an invalid value or are inconsistent with other critical settings, preventing proper operation. This can occur due to incorrect manual input, a corrupted parameter download, or an incompatible configuration for the selected control mode. It prevents the inverter from starting or operating safely.

• An invalid numerical value has been entered for a specific parameter (e.g., an out-of-range frequency limit).
• Conflicting parameter settings are present (e.g., two mutually exclusive control modes activated simultaneously).
• A critical parameter (e.g., motor constants) has been changed while the inverter is not in a stopped state.
• Parameter write-protection (e.g., Parameter P7-01) is active, preventing necessary parameter updates.
• Firmware incompatibility after an update, requiring specific parameter re-initialization or adjustments.

Click steps to track your progress.

1. 1

   1. Review recently modified parameters against the inverter's programming manual for valid ranges and interdependencies.

2. 2

   2. Reset parameters that were recently changed to their default values (if specific parameter reset is available) and re-enter them carefully.

3. 3

   3. Perform a full parameter initialization (e.g., set Parameter P7-04 to '2' for factory defaults) and re-enter all settings from a known good backup.

4. 4

   4. Verify the parameter write-protect setting (e.g., Parameter P7-01) is set to allow parameter changes (e.g., P7-01 = 0).

5. 5

   5. Compare the current parameter set to a previously saved, known-good parameter file to identify any discrepancies.