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What is an internal fault optoin (INF6) error on an ATV320 drive?

Issue:
What is an internal fault optoin (INF6) error on an ATV320 drive?

Product Line:
Altivar 320

Environment:
All

Cause:
Installed option card is not recognized by VFD.

Resolution:
• Check the reference and compatibility of the option.  Replace option card if faulty.
• Check that the option is well inserted into the ATV320.
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