Hi Ian,

Yes, I didn't like the look of the connector from day 1 but it has worked ok up until now. If I had bothered to make the strain relief arm I think it probably would have lasted.

On page 65 of the manual I'm looking at it just talks about setting parameters:
"You can adapt the DF51 to your specific applications. To do this,
you need to change the frequency inverter’s parameters with the
built-in keypad, the optional keypads DEX-KEY-…"

Did you mean this or is there another manual you are looking at?

Also, to be clear, the spindle is not connected to the VFD, and the cable to the spindle is completely removed, so wiring the spindle direct won't help at this point. The VFD won't get past the error code on startup. I wonder if something is damaged inside.

I've managed to find all the settings for the VFD which I made 4 years ago, so if I can get it to work with after a reset I can get it going again quite quickly. Just can't find out how to do it . . .