Re: Need advice on stepper

Both motors have higher current ratings than Xylotex would handle
(2.5A) for bipolar-parallel. You would have to run them in bipolar-
series, altough the first one could be de-rated down to 2.5A and
still run in parallel with some loss in power.

Regards,

Frank

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "D.Pageau" <dpageau@i...>
wrote:

> I have to choose between two differents steppers. Theses steppers

will

> be use on a taig mill (3 axis). The drive will be Xylotex with
> 24VDC@8... PSU
>
> Theses motor are convertible, can be wires in
> unipolar/bipolar-serie/bipolar-parallel mode.
>
> Which one is the best choice for my setup
> bipolar-serie or bipolar-parallel
> better PSU?
> should I use 0.9deg stepper?
> SST58D5831 have much more power at higher speed but what about the

PSU

> (24VDC@8...) with 3 motor like this one?
>
> http://www.shinano.com/pdf/SST58D.pdf
>
> SST58D5821
> 200 steps
>
> unipolar
> 4.8 V
> 2 A
> 2.4 Ohms/phase
> 5.1 mh/phase
> 196 oz/in holding
> 138 oz/in@1000hz
> 67 oz/in@1500hz
>
> bipolar-serie
> 6.72 V
> 1.4 A
> 4.8 Ohms/phase
> 20.4 mh/phase
> 274.4 oz/in holding
>
> bipolar-parallel
> 3.36 V
> 2.8 A
> 1.2 Ohms/phase
> 5.1 mh/phase
> 274.4 oz/in holding
>
> SST58D5831
> 200 steps
>
> unipolar
> 3 V
> 3 A
> 1 Ohms/phase
> 2.62 mh/phase
> 196 oz/in holding
> 138 oz/in@1000hz
> 97 oz/in@1500hz
>
> bipolar-serie
> 4.2 V
> 2.1 A
> 2 Ohms/phase
> 10.48 mh/phase
> 274.4 oz/in holding
>
> bipolar-parallel
> 2.1 V
> 4.2 A
> 0.5 Ohms/phase
> 2.62 mh/phase
> 274.4 oz/in holding
>
> Thanks,
>
> Dominic Pageau