Correction - The mill currently has encoders on the motors only. Dave
----- Original Message ----- From: "Paul Keeton" <pkeet...@woh.rr.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Saturday, March 20, 2010 6:03 PM Subject: Re: [Emc-users] G52 and Fanuc conversion to EMC > As I stated earlier - > > The mill currently has encoders on the motors. The issue is > getting > the Fanuc drives existing on the machine at this time to work with EMC. > The > drive requires an analog reference command signal. The drive also requires > an analog tach signal to operate correctly. It does a comparison between > VREF and TSA (tach) to calculate both direction and speed and adjusts the > drive operation accordingly. To my knowledge and based on the > documentation > on this drive and motor it must operate in velocity mode. The encoder > signal(A,A/,B,B/,Z,Z/) currently is fed to the Fanuc 11M control and is > converted in the main control hardware to an analog signal that is sent to > the drive. This model drive does not accept PWM signal for VREF or > Quadrature for the tach. If you take the Fanuc control out of the picture > and install an EMC based control the drive will still require the tach > signal. The machine does not have scales, It does not have tachs, it does > not have encoders. These items can be installed if/when needed > > Dave. > > > ----- Original Message ----- > From: "Chris Radek" <ch...@timeguy.com> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Sent: Saturday, March 20, 2010 5:32 PM > Subject: Re: [Emc-users] G52 and Fanuc conversion to EMC > > >> On Sat, Mar 20, 2010 at 02:07:14PM -0400, Paul Keeton wrote: >>> Gene, >>> >>> Do you (or anyone else) see any any issue with using a >>> separate >>> encoder and leaving the tach on the motor alone? >> >> >> WAIT - what exactly do you have? >> >> Some people are assuming you have tachs, some assume you don't, some >> assume you have linear scales, some don't, ...??? >> >> Can you tell us clearly what is and isn't on your mill? >> >> 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 > ------------------------------------------------------------------------------ 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