Is a contactor (or master relay) required between incoming
lines and a VFD? The question goes to safety. If a
contactor were used before the VFD and an e-stop engaged
then the motor will coast to a stop (i.e. VFD loses power)
instead of stopping much faster if the VFD braking fucntion
were used.
It would make more sense to keep power on the VFD.
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