On 5 July 2016 at 20:23, Rick Lair <[email protected]> wrote: > So after spending the last few hours looking this thing, I have found > the following, this is a 3 phrase brush-less AC Siemens servo, with I > believe resolver (no tachometer) feedback to the drive ( for the > commutation I would believe) and the encoder I replaced just goes back > to the cnc control.
That seems like a really under-utilised resolver, they are expensive. It could be a momentary glitch in the commutation. Or it could be in the position feedback. It might be hard to tell which. Halscope might be useful, but deciding what is cause and what is effect is likely to be tricky. If you have a 2-channel oscilloscope then you could look at the resolver outputs. Should be two sine waves that vary smoothly in relative amplitude. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
