What can cause an (FrF) line frequency fault on the ATS48 Soft Starters?

Change Parameter FrC from AUt to 60.  This changes the tolerance to plus/minus 20%.

Remove and inspect the green terminal strips at the bottom of the softstart.  Securely reinstall the strips.

Confirm that control power is present on CL1-CL2 terminals before a Run command is given.  Delay the Run command until nLP or rdY codes appear on the display.

Is the power supply from a generator?.  If so, check the frequency of the line to see if it is out of tolerance.  Upgrade the generator if necessary.  The FrC setting accommodates Class 1, 2 or 3 generators as defined by the Electrical Generating Systems Association.

Contact the Drives Product Support Group if the fault continues after corrective action.

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