On 20 March 2013 16:50, Jon Elson <[email protected]> wrote: > Well, there are two ways to go with Pico Systems products. If the servo > amps > are in good shape and of the analog velocity servo type, then the PPMC > is the > right choice. But, if the amps are not in good condition, then there is the > PWM controller and PWM servo amp. Losing the tach feedback, you may need > to change to higher resolution encoders to get smooth motion with the PWM > system.
I have a feeling that Anilam used tachos on the motors and glass scales on the machine slides. (Though maybe not always). In that configuration I think that keeping the existing drives is likely to be easier, but if switching to the PWM controller then it isn't so much a case of improving the encoders as adding them. However, I guess that the tachometers become redundant at that point, so it may not be too difficult. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
