VFD upgrade

[EddyCurrent]

This is a good place to deal with;

https://www.inverterdrive.com/group/...er=Power|2.2kW

I like the ABB ACS355 drives but to be honest they had trouble getting it to work at the high frequencies our spindles use, they did get there in the end though and it's working great.
My spindle runs in vector mode because it gives high torque at low speed but if you don't intend using it at low speed then you probably don't need it. At very low speeds where you still want torque you would have to derate the motor, so for example you might have to use a 3kW spindle to get 2.2kW out of it at low speed.
The reason I use low speed (1000 rpm) is to drive sanding drums like these; http://www.axminster.co.uk/axminster...-sanding-drums you can turn the machine into an oscillating drum sander.