Thanks Guys
I thought that's what it meant but I have not seen dual phase controllers. I wasn't sure if it meant available in 1 or 3 phase.

I will look into the isolating transformer, hopefully it doesn't need it.

Are all 3 phase input VFDs capable of running off single phase? Im trying to find a closed loop vector VFD (IMO VXR) but most of the cheaper ones on ebay are 3phase input.
Cheers