On Fri, 2011-05-13 at 20:23 -0500, Jon Elson wrote: > Kirk Wallace wrote: > > Is replacing the encoder with a more EMC2 friendly encoder an option? I > > have a couple motors with proprietary encoders on them that I plan on > > replacing with quadrature and Hall encoders or magnetic encoders such as > > the AEAT-6010 if it's fast enough. Removing the old encoders was easy > > enough and provides the mounting features for the new encoders. I > > haven't gone beyond a rough plan so far, so this may not work. On the > > other hand, if the price on Fanuc motors has gone up, it may be cheaper > > to use generic motors with EMC2 instead and use the Fanuc motors on > > Fanuc systems. > > > Oh, well, sure! You can always use the new AMT 6-channel encoder that > has commutation outputs along with > quadrature. BUT, the Fanuc serial encoders have 32K, 64K and 1 million > counts/rev, and that kind of resolution > is VERY expensive. These high-res encoders are probably more valuable > than the motors! > > I was thinking about this mostly for retrofits of machines which already > had these motor/encoders mounted > on the machine. There are quite a few of them out there. Some are the > older S series which I already have converters > for. They moved on to these serial encoders sometime in the mid 90's. > > Jon
They must use direct drive, fast screws and very stiff mechanical structures in order to justify the high encoder resolution. On my machines, the least significant bits would be noise. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Achieve unprecedented app performance and reliability What every C/C++ and Fortran developer should know. Learn how Intel has extended the reach of its next-generation tools to help boost performance applications - inlcuding clusters. http://p.sf.net/sfu/intel-dev2devmay _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
