Re: Stepper motor voltage VS amps.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Miroslav Pejic <peja@n...>
wrote:

> Hello Scott,
> There is a light:
> The driver regulates motor current in pulse manner. Every moment

when

> current reaches 3 A, (actually, some more then 3 A) driver shut the
> current off. Then, after little pause current get to zero. In this
> moment driver supply the current again, and the process repeats,

with

> frequency of 15 KHz or more. So, the average current is never bigger
> then 3 A, and this happens on 40-50 Volts.
> Real power consumption is 3A * 40 V = 120 Watts.
> (Apologize for my English, I never learned it in school)
> Peja

Am I correct in saying that you are describing something like a pulse
width output ?

and that even though it may be connected to 40 volts, the actual
voltage reaching the motor will be 2 volts ?

Dave

>
> -----Original Message-----
> From: sriddle68 [mailto:sariddle@l...]
> Sent: Monday, May 19, 2003 12:28 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Stepper motor voltage VS amps.
>
>
> I am looking and making a small 3 axis CNC mill for wood routing

and

> such. I have been surfing through Ebay and it's endless supply of
> varied stepper motors. The question I have is this. I see several
> postings that say for the power source to use 20-25 times the

motors

> rated voltage. So if the motor says 2V you should use 40-50V. I
> understand this is done for responce and such but what about the
> amperage? If it says 2V 3A should you supply 40-50 Volts and 3

amps?

> Or do you supply it the same wattage as the motor plate adds up to?
> 2V x 3A = 6Watts. This seems to low.
>
> If any one can shed some light on this subject for me I would

greatly

> appreciate it.
>
> Thanks
> Scott
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@a...,
> timg@k...
> Moderator: pentam@c... indigo_red@q... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to

reach it if

> you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to

be a

> sister site to the CCED group, as many of the same members are

there, for OT

> subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING

THEM.

> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to

http://docs.yahoo.com/info/terms/