Danfoss · VLT 2800 Variable Speed Drive
This fault indicates an error within the data values stored in the EEPROM. This memory holds configuration settings and operational data, and corruption can lead to the drive operating with incorrect parameters or failing to start. It points to a memory integrity issue on the control card.
Click steps to track your progress.
1. Reset the drive to factory default settings (Parameter P1-00 = 1) and re-enter all necessary application parameters.
2. Load a previously known-good configuration file from a backup source (e.g., via a drive software tool).
3. Verify individual critical parameters (e.g., P3-02 Motor rated current, P1-20 Acceleration time) for correctness after entry.
4. Measure the auxiliary control card power supply voltage for any fluctuations that could affect EEPROM write operations.
5. Replace the control card if data value errors in the EEPROM persist after reset and parameter re-entry.