Re: rough motor

--- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...> wrote:

> Hi,
>
> What you are describing sounds to me like a motor drive that has

one

> phase burned out. The motor moves 2 full steps, then jumps back at
> very low speed. You may have to replace the transistors on the bad
> phase.

> Mariss

Checking the board by measuring Vref for setting the current. With no
stepping, Vref was 0.25, then when the command to move was given,
Vref increased to 0.50. I believe this shows that the logic part of
the board was OK. (BTW it would be nice if the geckos have this
feature for testing)

How does one check the motor part now?

Thanks a trillion

keongsan

> --- In CAD_CAM_EDM_DRO@y..., "keongsan" <keongsan@y...> wrote:
> > Hi all,
> >
> > What could be the cause of motors which vibrates/move in a

manner.

> > The motor was moving smoothly 2 weeks ago with the camtronics

board

> > and desknc for dos? Now when I try it out again, the motor (on

the

> > bench) seem to just vibrate roughly without appparently moving
> > anywhere, irrespective of feed rate. What should I look out for?
> >
> > Thanks in advance
> >
> > keongsan