Re: lost steps on deceleration

Thanks Dan and others,

Rejuggled the cables around together, and all 3 axes were moving
smoothly up to 40+ ipm (G201). Happily, I thought everything was
solved, disconnected the system to move to its final resting place.
On reconnection, now the x- and z- axes can even have problem moving
at 2 ipm while the y-axis move smoothly. At a loss now what to do
other than perhaps making up new cables using better quality
connector and perhaps with better skill at soldering, may hopefully
put behind this on-off problem.

Will appreciate any suggestion/further insight as to how to lick
problems like this.

Not so Terra

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Statman Designs, LLC"
<titanium@c...> wrote:

> This is most likely low-speed stepper resonance. It probably will

also miss

> steps on the acceleration side if you don't accelerate too fast

through the

> resonance band. The cure is to get a microstepping drive, you will

be

> amazed at how all of those resonance issues just disappear.
>
> If you are already using a microstepping drive and it is set to 8

or 10

> microsteps, then your problem has nothing to do with resonance.

You will

> then have to do some more systematic testing of your system to know

exactly

> when and where it is dropping steps.
>
> Daniel J. Statman, Statman Designs
> www.statmandesigns.com
> dan.statman@r...
>
>
> ----- Original Message -----
> From: "terracnc" <terracnc@y...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Tuesday, August 05, 2003 8:42 AM
> Subject: [CAD_CAM_EDM_DRO] lost steps on deceleration
>
>
> > Hi everyone,
> >
> > If a stepper moves OK on acceleration and constant speed but lose
> > steps on deceleration, what is this symtomatic of? Is it the max.
> > speed too high, the aceleration (ramp?) set too high or too low,

etc.?

> >
> > Thanks
> >
> > Terra
> >
> >
> >
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