RE: Stepper controllers

["Tim Goldstein" <timg-at-ktmarketing.com>]

Hope a little self promotion is not forbidden on this list?

I have some of the close-out Gecko G201 drivers that I am selling.
Details at:
http://www.timgoldstein.com/cnc/g201special.asp

They would spin your motors just fine.

I seriously doubt that the motors you have are in the 1000+ in/oz range.
It would take a pretty current triple stack NEMA 34 to make that spec
and it would definitely not be labeled 120 in/oz.

Tim
[Denver, CO]


> -----Original Message-----
> From: emc-at-nist.gov [emc-at-nist.gov] On Behalf Of Fred Zinsli
> Sent: Monday, March 04, 2002 8:46 PM
> To: Multiple recipients of list
> Subject: Stepper controllers
> 
> 
> 
> 
> 
> Well, now that I have been dry running EMC on my system for 
> about 2 months. 
> Just using some type 17 steppers salvaged from a old printer. 
> EMC seems to be 
> quite stable. The steppers were just sitting on the bench.
> 
> After much hunting, I have managed to get hold of some 
> sizeable steppers for 
> my mill. Frame 34 -at- 1000+ oz/in. We still don't know how much 
> torque they 
> produce, as the label stated 120 oz/in, and we have already 
> tested them to 
> 680 oz/in on the L298 circuit -at- 2A.
> 
> My problem is, that now having the steppers, I can't seem to 
> locate any 
> suitable drivers for them.
> 
> I have done the L298, L297 thing, but they just don't deliver 
> enough for the 
> job.
> 
> If anyone has any information, diagrams, drawings etc that 
> they don't mind 
> parting with, I would love to hear from you.
> 
> The steppers I have require a minimum of 4A, but 
> operationally they require 
> 6-7A. I have the power supply, or at least a power supply 
> that delivers 44VDC 
> -at- 20A (unregulated).
> 
> Many thanks in advance
> 
> 
> Fred Zinsli
> 
> 
> 
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