On 22 November 2010 14:23, Spiderdab <77...@tiscali.it> wrote: > my stepper motors are these: > http://www.goodluckbuy.com/nema-23-stepper-motor-12-6kgcm-1-8degre-4leads-56mm-57bygh56-401a.html
Those are quite short steppers, there are some about twice as long with about twice the torque, > so, supposing to use my steppers and changing only the drive, how much > voltage do you think can i apply to these? The motors have a dielectric strength quoted of 500V AC for one minute. They should work fine at 100V. The limiting factor is likely to be the stepper drive. The stepper drive will limit the current to the set value, so steady-state the voltage across the motor will be exactly the same as it is now (about 2.5V). The advantage is that when the motor is spinning rapidly it can still supply the same current with a 50V back-emf. > Than i'm interested in learning how to use servos and closed loop, so > i'm reading much on discussions about this. that's why people are asking > me to use this system to move a camera of about 20-30kg. so i'll need a > more serius/powerful/precise system.. i'm going to ask about in a later > moment. That's a much more serious proposition, and will need real money. Probably around EUR1000 per motor (for a 20Nm 400V AC servo). For drives the Mesa 8i20 might be an option, though support in EMC2 is still rather experimental. -- atp ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
