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    What can cause an tJF or IGBT overheating fault on the ATV630 and ATV930 drives?

    Issue:
    What can cause an tJF or IGBT overheating fault on the ATV630 and ATV930 drives?

    Product Line:
    ATV630 and ATV930

    Environment:
    All 

    Cause:
    IGBT is overheating or fans are not running.

    Resolution:
    IGBT Overheating Error
    Principle
    The thermal model of the IGBT thermal monitoring has detected an overheat. This function is protecting the IGBT's.
    Probable causes
    -
    Ambient temperature too high.
    - Bad cooling fan.
    - Filter blocked.
    - Check the ventilation.
    - Function of fans faulty.

    Remedies
    - Check the motor load, the ventilation of the Drive and the ambient.
    - Reduce the switching frequency

     

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