On 30 January 2012 22:33, Viesturs Lācis <viesturs.la...@gmail.com> wrote:
> 2012/1/30 Peter C. Wallace <p...@mesanet.com>: > > > > Before you change encoders, and noting that others have used the CUI/AMT > > encoders with success, can you try a little experiment to make sure this > is > > not a noise --> losing count/commutation issue? > > Thank You for the explanation! I really appreciate that! And this kind of > test > with marking a spot on motor's pulley and frame is neat! > Unfortunately I left yesterday after spending 4 days at client's site. > And it is several hours to drive there. > So I do not have access to machine and it would be way too expensive > just to go there and test it. And there is nobody whom I could ask to > do it for me :( > > I do agree that I should gather as much information as possible, > before making any decisions, but I find the associated cost to be too > high. > > I have flexible CAT5 cable with shielding used for encoder and hall > sensor signals, shield is connected to GND only in the PC end, so I do > not think that it could pick up some noise in the cable. > I used a superglue to eliminate any chance of slip between motor shaft > and encoder wheel. > Jon Elson did very good comparison and analysis on these encoders and > their poor performance. > It is not only machine for my own use, but I also have to provide 2 > year warranty, so I do not want to risk of getting encoders working > now and then solving this issue again in few months or so. > > Most CAT5 cable is solid single strand, not good for installing on machines or in vibrating environment. But maybe yours is multi-strand? Regards Roland ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
