RE: [CAD_CAM_EDM_DRO] Thanks - was: Things to check? is now: RUNNING~!

> -----Original Message-----
> Motors got very warm to the touch after a little running.
> I could grasp a motor, but only for about
> 10 seconds before it got very uncomfortable.

High over voltages (like you have) yield hot motors even if the current
is set within limits. Good explanation and graphs in the Gecko stepper
white paper (a must read). So, if you are sure the current is set
correctly (you can always reduce it just to try) and you are still
getting hot fast then you know it is because you pushed the upper limit
on the over voltage.

> Motors *SEEMED* a bit slow for my likes...
> Is there a way to speed them up?

No. You are already at the voltage limit of the drive. This is assuming
that you are not running out of pulse from the computer. If you have not
yet pushed them to the limit step wise where they are stalling then you
may be able to speed them up by feeding them more pulses.

> Also, the Z axis motor seemed to be "hunting" all the time.
> (do steppers need "tuning" also?)

Geckos have a pot for adjusting the midband stabilization. Other than
that there is not tuning. The motors should lock in at rest and not hunt
at all.

> What is the "recommended" setting for "steps" in the Geckos?
> Full, half, or less?

Depends on your machine and computer. 10X multiplied will give you the
smoothest running as you are the least dependent on the smoothness of
the controller program pulse stream. But, it also gives the worst
resolution. 1X gives the highest resolution, but requires the highest
pulse stream from the computer. You will need to pick a setting such
that your computer can put out a sufficient pulse stream to drive your
motors at the speed you want. Depending upon the software and the
mechanical reduction you sometimes have to balance the setting between
resolution and speed.

Tim
[Denver, CO]
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