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What is an EEF1 EEPROM Control fault on the ATV600 Process drives?

What is an EEF1 EEPROM Control fault on the ATV600 Process drives?

Product Line:
Altivar Process ATV600 series


An error of the internal memory of the control block has been detected.

Cycle power on the VFD to clear the fault.  
If it does not clear:
Save a copy of the program in the keypad display.
Reset the drive to factory settings for Parameter Group Lists = All.
If the fault does not clear, the control block needs to be replaced.

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