EPM data: unknown parameter found

What does 0x7696 mean?

The memory module (EPM) contains parameter settings that are not recognized by the current inverter software. This can happen after firmware updates or compatibility changes.

• Firmware version of the inverter is older than the firmware version used to save parameters to the EPM, resulting in unrecognized new parameters.
• A firmware update on the inverter changed or removed certain parameters, and the EPM still holds values for these outdated parameters.
• The EPM module was used with a different drive model or series that has a distinct parameter set, leading to foreign parameter entries.
• Data corruption on the EPM module, causing invalid parameter addresses or values to be stored.
• Improper parameter saving process, potentially leading to incomplete or corrupted data on the EPM.

Click steps to track your progress.

1. 1

   Connect to the inverter with the configuration software and upload parameters from the EPM to identify the 'unknown' parameters if possible.

2. 2

   Update the inverter's firmware to the latest available version. Then perform a parameter initialization (e.g., P99.00 = 1) and reconfigure parameters.

3. 3

   If a known good and compatible EPM is available, try swapping it to see if the fault clears.

4. 4

   Perform a factory reset of the inverter (e.g., P99.00 = 1) to ensure all parameters are at default values, then re-enter application-specific settings.

5. 5

   Manually review and compare the parameter list from the EPM (if readable) with the current inverter's parameter manual to pinpoint discrepancies.