Re: shuddering stepper

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Chris L <datac@l...> wrote:

> Heroaku,
> Is this Z axis connected to a mechanism ? Some step drives will

resonate

> if not connected to any resistive force.
>
> If it is connected, Try swapping the known good working axis

components

> one at a time into the axis that is acting up.
> Start with the driver swap, Check both the last good axis and the

one

> giving trouble. Then, if that does the very same thing in Z, try

using

> the Step-Dir lines from a different axis to feed the drive. That is

the

> best place to start.
>
> Chris L
>
> heroaku wrote:
>
> >Hi,
> >
> >I have the x-axis and y-axis of the stepper driver (using G201's)
> >working nicely, the the z-axis only produce "shuddering"
> >movements/sounds (violent motion but net movement = 0)
> >
> >What is this symtom of and where should I start looking to correct
> >the problem. The stepper seem to be wired correctly.
> >

Hi Chris,

Thanks for responding.

I interchanged the step/direction wires for the y- and z-axis, and
the problem disappeared. Now all axes moving smoothly.

What I'll like to know is, what caused the original problem? Could it
be the direction wire not connected properly or something?

heroaku