Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread robert
On 08/03/2011 02:52, Igor Chudov wrote: > Robert, would you show some examples of such drives, so that I know what to > look for? Thanks! Yaskawa http://www.yaskawa.com/site/products.nsf/products/Industrial%20AC%20Drives~G7.html Control Techniques http://www.controltechniques.com/CTcom/products/ac

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread Jon Elson
Igor Chudov wrote: > > Thanks, something like this? > > Could EMC work with it? > > We don't have a lot of EMC2 experience with combined spindle/axes. Several schemes have been suggested for how to switch back and forth between a spindle and a C axis. I think a couple people have done it. Cer

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread Jack Coats
Igor, I could see the possibility of using your setup with a tap to tap threads into holes, where rotation and vertical travel must be coordinated, both going in and out/up and down. or if you have a tool changer that requires given orientation of the tool before putting it away or getting it

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread Igor Chudov
On Mon, Mar 7, 2011 at 10:25 PM, Jon Elson wrote: > Igor Chudov wrote: > > I have, on my mill, a 3 phase spindle motor on a VFD, driving the spindle > > with a VS belt. > > > > I also have an encoder on the spindle. > > > > I wonder if, for any kind of a yet-unknown purpose, I would want to > ori

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread andy pugh
On 8 March 2011 12:21, Michael Haberler wrote: > I would be very interested in doing this - however, my VFDs (Toshiba VFS-11) > do not support an axis encoder input > > has anybody done this using in EMC/ creative HAL wiring -  maybe a PID > controller - sort of 'parallel' to normal spindle cont

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread Michael Haberler
I would be very interested in doing this - however, my VFDs (Toshiba VFS-11) do not support an axis encoder input has anybody done this using in EMC/ creative HAL wiring - maybe a PID controller - sort of 'parallel' to normal spindle control? I'd be very interested in such a setup example! -M

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-08 Thread Mark Wendt
On 03/07/2011 11:25 PM, Jon Elson wrote: > Igor Chudov wrote: >> I have, on my mill, a 3 phase spindle motor on a VFD, driving the spindle >> with a VS belt. >> >> I also have an encoder on the spindle. >> >> I wonder if, for any kind of a yet-unknown purpose, I would want to orient >> my spindle i

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-07 Thread Jon Elson
Igor Chudov wrote: > I have, on my mill, a 3 phase spindle motor on a VFD, driving the spindle > with a VS belt. > > I also have an encoder on the spindle. > > I wonder if, for any kind of a yet-unknown purpose, I would want to orient > my spindle in a particular way with precision. > > If I did wa

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-07 Thread Igor Chudov
Robert, would you show some examples of such drives, so that I know what to look for? Thanks! On Mon, Mar 7, 2011 at 4:52 PM, robert wrote: > Control Techneques, Yaskawa etc all do high level VFDs todo just what > you have asked some/most vfd only do it to 1 postion on the encoder > feedback, ot

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-07 Thread robert
its a very tricky question to answer as depends how dynamic you want or need it. we used a standard Hz mode VFD to control a CNC spindle motor as Flux Vector has a limit of 4000rpm on our VFD so had to use Hz mode to get to 6000+ can check out afew vids here poke around on my other vids too ht

Re: [Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-07 Thread andy pugh
On 7 March 2011 22:27, Igor Chudov wrote: > I wonder if, for any kind of a yet-unknown purpose, I would want to orient > my spindle in a particular way with precision. It nearly works with my very basic 1980s VFD. I think it would work a great deal better with a modern flux-vector drive (and I t

[Emc-users] Can a regular 3 phase spindle motor be used as a servo motor

2011-03-07 Thread Igor Chudov
I have, on my mill, a 3 phase spindle motor on a VFD, driving the spindle with a VS belt. I also have an encoder on the spindle. I wonder if, for any kind of a yet-unknown purpose, I would want to orient my spindle in a particular way with precision. If I did want that, could I buy some kind of