800w spindle - noise & controlling remotely

[Jonathan]

I agree there's not much point oversizing if you're getting a VFD from a reputable manufacturer - unless maybe it's being operated at an unusually high temperature. You'd be fine with the 0.75kW Toshiba VFD as you'll struggle to draw full power from the spindle, and the worst that can happen if you do is the VFD will just cut out to protect itself. It's better to select the inverter by current rating, not power rating.

The VFDs from China let you set all the relevant parameters, like current and voltage, accurately so there's nothing to worry about there.

Plenty of the 1.5kW VFDs available for £86:

http://www.ebay.co.uk/sch/i.html?_so...D&LH_PrefLoc=2

Maybe less if you use best offer...