Could you clarify which you are using (e.g., FC 102, FC 302, or VLT 2800) and if there are any other letters or symbols on the screen?
Automotive parts manufacturing Drive: Danfoss VLT FC-202, 7.5kW Symptom: Alarm 2563 appeared 3–4 times per shift, always during welding robot operation. Danfoss Vlt Error Code 2563
If none of the above works, the EEPROM chip has physically degraded. The control card is a field-replaceable unit. Could you clarify which you are using (e