Re: [CAD_CAM_EDM_DRO] Re: Bipolar Stepper series vs paralell wiring

Lester,
 
Thanks for the simple rule!
 
The board I have is intended for 24VDC according to the instructions.   I have 2 other machines running on 24vdc but different controllers   (gecko and xylotex)  Haven't had any major problems so far.
 
Jack

--- On Tue, 4/27/10, Lester Caine <lester@...> wrote:


From: Lester Caine <lester@...>
Subject: Re: [CAD_CAM_EDM_DRO] Re: Bipolar Stepper series vs paralell wiring
To: CAD_CAM_EDM_DRO@yahoogroups.com
Date: Tuesday, April 27, 2010, 1:19 AM


 



Jack McKie wrote:
> Phil,
>
> Thanks for your reply.
>
> I am going to use a mechatronics board with a 24 volt power supply so I guess you are saying that paralell wiring will provide better torque?
>
> I'm interested in practical info since I'm not knowledgeable in electronics.

24V is not really enough even for parallel wiring ...

The easy to remember rule is parallel = power, Series = speed, but obviously it
is not narly as easy as that :)

The quick rule of thumb on voltage using a bipolar driver is 10 times the
stepper motor rating, so a '4V' motor needs 40V when running parallel and 80V in
series. I tend to test things at 24V, but you see a much more reliable
performance at 48V with the drivers I am using. 'Tuning' for speed near to the
point where the 24V supply is just loosing steps will be rock steady at 48V with
room to turn things up more!

--
Lester Caine - G8HFL
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