2013/5/4 Peter C. Wallace <p...@mesanet.com> > > > Both motors should draw 16 A only if they are both at full torque and full > speed simultaneouly. I suspect some of your troubles are due to trying to > run > high speed motors with 1 KHz commutation (for the 7I39 and > a few thousand > RPM I would suggest a minimum of 4 KHz). >
Motors are coupled coupled to pinion through 6:1 belt drive. There is something wrong in mechanics, it gets really loud, if I spin the motor above 1000 RPM, so 1K RPM is where I have set my limit. Motor has 8 poles, so drive should do 4000 electrical revolutions per minute. Is that considered high-speed? Do I understand correctly that by commutation frequency You mean servo period update rate? Could You, please, explain in more detail, what exactly is happening there, what makes those fuses to give up? I somehow do not get, how increasing servo period update rate can affect, how much power/current is drawn from motor PSU? > You can of course disable the fuses. The problem at that point is if you do > manage to blow a MOSFET (or bypass capacitor), Instead of a fixable card > you > have a fire. > Ok, thanks, this perspective does not sound really tempting. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
