What is a power eeprom (EEF2) error on ATV320 drive?

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Issue:
ATV320 with control eeprom (EEF1) error.

Product Line:
Altivar 320

Environment:
All

Cause:
Internal memory detected fault, power card

Resolution:
• Check the environment (electromagnetic compatibility), grounding, control wiring.
• Turn off, reset, return to factory settings.
• Contact Schneider Electric Product Support.