On Fri, 22 Apr 2011, Eric Keller wrote: > Date: Fri, 22 Apr 2011 12:12:43 -0400 > From: Eric Keller <eekel...@psu.edu> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] Motion control cards > > On Fri, Apr 22, 2011 at 11:16 AM, Peter C. Wallace <p...@mesanet.com> wrote: >> >> As far as servo motors go there is no real difference between AC and BLDC, >> all >> brushless servo motors are "AC", that is 3 phase AC driven synchronous motors >> with permanent magnet rotors. The 8I20 (and the 7I39) are intended for >> driving >> this class of motor. There is sometimes a slight difference in pole shaping >> for optimization with different drive waveforms (sine or trapeziodal) but if >> you look at motor data sheets you will find that pretty much all brushless >> servo motors will work fine with sine wave drive. >> >> Peter Wallace >> Mesa Electronics > > Peter, > Where does the motor feedback enter the system with an 8i20? I just > scanned the manual, and I didn't really see a diagram. Are you aware > of anyone using the 8i20 in an EMC2 system? > Thanks > Eric Keller
The 8I20 is just the drive portion (a current amplifier = torque mode drive) it gets its feedback via encoders from EMC > > ------------------------------------------------------------------------------ > Fulfilling the Lean Software Promise > Lean software platforms are now widely adopted and the benefits have been > demonstrated beyond question. Learn why your peers are replacing JEE > containers with lightweight application servers - and what you can gain > from the move. http://p.sf.net/sfu/vmware-sfemails > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Fulfilling the Lean Software Promise Lean software platforms are now widely adopted and the benefits have been demonstrated beyond question. Learn why your peers are replacing JEE containers with lightweight application servers - and what you can gain from the move. http://p.sf.net/sfu/vmware-sfemails _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
