Quote Originally Posted by dazp1976 View Post
It sounded to me it was more his vfd fwd/rev that he swapped round tbf.
Only needs fwd cconnected and could've easily swapped it with active high/low change.
These spindles when you program the VFD Drive the reverse is normally blocked so it can't be run in reverse, if wired to the manufactures spec's they run the correct direction

If he is using manual control VFD Drive KeyPad you can't change the direction with an active High / low change

The wiring is the important part and needs to be correct