What are the probable causes of StF fault on ATS48 soft starter.

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StF Detection is active during the motor starting phase (acceleration phase). The ATS48 will trigger an STF fault if: the starting time > TLS.

•   Parameter setting In lower than the nominal motor current indicated on the rating plate.
•   TLS parameter setting too low.
•   ILT parameter setting (limiting current) too low.
•   Parameters configured incorrectly (ILT, TLI, tq0, LSC parameters).
•   ATS48 undersized.