Re: Cheap 1500W Chinese spindle, experiences?
Originally Posted by
A_Camera
I am no VFD expert and in fact not even having one yet, but I am in the process of buying one, which is why I am looking at it and check how it works and what is what. One thing was though VERY clear to me, even before looking at any specs, was that the RPM is NOT regulated by the voltage, but the frequency. That's the very idea behind VFD use. Otherwise you could not pull out the power your are getting at any speed. Look at Ohms law, if you reduce the voltage you will lose power.
If you can, I'd recommend gettig a vectorless one, it will allow the spindle to retain torque at lower speeds. Much better, especially doing aluminium work.
cheers, Ian
It's rumoured that everytime someone buys a TB6560 based board, an engineer cries!