Re: Motion Control Board - preliminary design finished - posted photo-image
- One thing I know for certain, higher voltages allow for higher
speeds with steppers. Not like an ordinary DC motor where the
voltage controls the RPM though.
Rather, like Stefan and Roy explained, with a higher voltage you can
achieve higher step rates without the motor "spazing out".
--- In Electronics_101@yahoogroups.com, "Roy J. Tellason"
> On Wednesday 29 March 2006 06:24 am, Medmidas Gmail wrote:
> > Stepper motors speed can't be faster or slower when voltage is
> > lower. It depends only on step/pulsing frequency.in any given
> This is incorrect. When you're pulsing as fast as you want to go
> situation, the voltage that's applied will change immediately butthe
> inductance of the motor windings will prevent the current fromchanging
> immediately, and the use of higher voltages in this point (withappropriate
> current limiting designed into the circuit) will give a faster-changing
> current.the rated
> This is why common situations use voltages as high as 20-25 times
> motor voltage -- for speed.preliminary design
> > ----- Original Message -----
> > From: lcdpublishing
> > To: Electronics_101@yahoogroups.com
> > Sent: Wednesday, March 29, 2006 3:31 AM
> > Subject: [Electronics_101] Re: Motion Control Board -
> > finished - posted photo-imageup my
> > Mini-update...
> > Having a few minutes of time available this afternoon, I wired
> > 20 volt power supply for the stepper drivers. It runs a bitfaster
> > now....can
> > @ 12 volts, 7250 SPS = 544 RPM top speed
> > @ 20 volts, 10,250 SPS = 769 RPM top speed
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