[CAD_CAM_EDM_DRO] Re: Stepper motor connection

Hi Ron,

The "according to Mariss" reference comes from an old discussion on the
Geckodrive Yahoogroup on running multiple motors on one drive where the
drive was a Geckodrive product. What Mariss then said was that because of
the mid-band resonance dampening feature of their drives running multiple
motors on a single drive isn't suitable because it can confuse the mid-band
resonance dampening circuitry. So in that regard a drive without the
otherwise nice feature of mid-band resonance dampening might perform better
in a dual motor on a single drive setup.



If you want to read Mariss post go to the Geckodrive Yahoogroup and lookup
message 7125.



That, however was years ago, things might have changed, I don't know.



/Henrik.



_____

---Original message---

On 2/1/2013 5:01 AM, cnc sales wrote:
> According to Mariss of Geckodrives, and based on some anecdotal
> experience, for (very) slow movements this may work.
> In the early days, many tried it, and this was not seen as a practical
> solution.
I have a lot of respect for Mariss and Gecko drives are great, but I
have 3 Reprap printers running micro-stepping
drives and they all have dual steppers on the Z axis run by a single
Pololu bipolar driver. None have ever lost steps.
These are small NEMA 17 motors and a 2 amp driver.
OTOH, when I built my cnc router from scratch, I followed conventional
wisdom and used two drivers for the two NEMA 23 motors on the X axis.
They are slaved together in Mach 3. This also works very well.

--

Ron Thompson





[Non-text portions of this message have been removed]