Re: [Emc-users] Spindle Speed Control.

Sun, 06 Oct 2019 11:00:18 -0700 


> -----Original Message-----
> From: Andrew [mailto:[email protected]]
> I wouldn't worry about the min voltage.
> IIRC every VFD has settings for voltage-rpm curve, so you can set 0rpm to
> 0.5V or 1V, for instance.
> 

The Bergerda AC Servo when connected to a Pot varying the voltage can turn ever 
so slowly with a really low voltage.  Like 1 RPM.   It also has a parameter 
that is set to the minimum A/D voltage that will start the motor turning so I 
agree, it's not a big deal.    I think the cheaper VFDs like my GS-1 probably 
don't even allow a very slow speed.

I suppose it depends on how slow one wants the spindle to turn.  My GS-1 starts 
turning at 2.8 RPM using the knob on the front.

john

> WBR,
> Andrew
> 
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