I agree with you Chris. The drive can be setup for either a 3v/1000 or 7v/1000 tach signal. This might be the simplest way to to do it. Servotek makes really good tachs, May be just what I need.
Dave ----- Original Message ----- From: "Chris Radek" <ch...@timeguy.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Saturday, March 20, 2010 5:19 PM Subject: Re: [Emc-users] G52 and Fanuc conversion to EMC > On Sat, Mar 20, 2010 at 03:57:02PM -0500, Jon Elson wrote: > >> If you look further, I think you will find there is NO tachometer in the >> machine. The Fanuc controls synthesize this from the encoder signals. > > The mesa hostmot2 driver has a good encoder velocity output that > considers the time stamp of the last encoder event to give smoother > output than d(counts)/dt. I'd just send that to a dac and see if it's > good enough to keep the amp happy. If it is, you have a pretty > cheap solution (just the cost of another 7i33). > > If that didn't just work, I'd quickly give up and fit real tachometers > like some others have suggested, because I bet in the long run that > is the best configuration. > > Chris > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
