Kress Spindle upgrade to a 2kw

[EddyCurrent]

Finally, is there anyway I can control spindle speed from mach 3 ?
Currently switched by the breakout board relay but I wondered if there was a vfd and a control board that talks to each other to make this happen ?

I use these and find they work well however as people have pointed out before there are probably better alternatives.

SYSTEM1
System45 (spindle boards are at the bottom of the page)

I'm using Mach3, ABB vfd, 2.2kW spindle. The spindle board plugs into the breakout board socket so no extra wiring and it supplies 0-10v dc to the vfd for speed control.
In Mach3 I have the motor tuning/spindle set so that the reported speed is the same as the actual speed and I use the relay on the spindle board to send a 'RUN' signal to the vfd.
So when running G-code the speed is determined by the S instruction, e.g. S20000, in my case the spindle would run at 20000 rpm, M5 switches the relay, I always have it set to run forward (you don't want reverse direction). I also have set in Mach3 a delay of 10 seconds (5 secs would be okay in reality) to allow the spindle to reach full speed before the G-code starts the first instruction.

The standard Chinese supplied vfd's would work just as well with this sytem.