Re: Stepper Motors - output steps

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "treadlemill" <ackland@g...>
wrote:

> ---I have been playing around with stepper motors in a hobby
> capacity for several years and have come to the following
> conclusions.
> I believe that the difference between series and parallel wound and
> wired steppers does not apply when using the parallel port.
> I have wired 8 lead motors in both series and parallel and timed

the

> moves and found no difference. I use new, current rather expensive
> microstep drives that req. some switch changes to optimise

different

> motor charateristics. Even doubling a 24v supply did not make the
> difference that gets discussed about on lists.
> I do not use my best computer in the basement but after finding

that

> there is little difference between timed G00 moves when using an

old

> 486/33 and a less old P/133 I did not think using a better computer
> would change things too much.
> I use TCNC which suits me so perhaps there are programs that can
> output a faster step rate?
> I could be wrong but I do not think with my setup I get to the part
> of the curve where speed and torque drop off occur so there is
> little point worrying about things like series, parallel, voltage,
> inductance and torque reduction. Studying manufacturers specs seem
> to qualify this for me.
> Indexers seem be to used in industrial applications of steppers so
> perhaps they can output a step rate where there would be a
> difference in performance with series or parallel configurations?
> T

In T-CNC you can put in pretty much any step rate you want although
the PC may not keep up.

the opening data screen shows the results of a software test. I've
put in numbers double that and run one axis without loosing steps.

I have no clue how fast you can go with any reliability, but you
could easily make a 555 circuit to gernerate some high step rates.

Obviously you need to increase speed until something fails : ) missed
steps or something.

I'd be interested in your testing.

Dave