Robert Williams wrote: > > If I try to determine coil terminals by connecting 12v car battery (negitive) > to a stepper terminal and touching other stepper terminals with the positive, > WILL I HARM THE MOTOR?? If not what reaction should I look for when coils > are energized?? Motor shaft is connected to X axis... will the axis move?? > > RobL
Hello Robert, 12vdc is too high for many windings. Damage is possible and likely. What is the listed voltage and current rating for the motor? Try a 1.5vdc D cell battery. Any stepper that can run a mill will handle that with ease. You should expect nothing to happen if the leads are not part of the same winding. You should expect the motor to move slightly then stop if the leads are part of the same winding. If you rotate by hand, the shaft will settle into only certain positions for each pair of connected leads. You should be able to connect lead pairs in an order that rotates the shaft one step at a time. An ohmmeter is better for testing. That way you not only know which leads are part of the same winding but you also know the resistance and which, if any, is a center tap. Tom Hubin [EMAIL PROTECTED] Addresses: FAQ: http://www.ktmarketing.com/faq.html FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/ Post Messages: [EMAIL PROTECTED] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED], [EMAIL PROTECTED], [EMAIL PROTECTED] Moderator: [EMAIL PROTECTED] [EMAIL PROTECTED] [EMAIL PROTECTED] [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 Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
