It does depend on the drive. My mill uses 320s and my biggest gripe is that they don't keep track of the position with the power off. My lathe has Rutex drives and they do remember the position even during EStop. They have separate logic and motor supplies. The rutex drives also have a very large following error limit (actually too large in my opinion) so it is virtually impossible to make them fault by stopping quickly. I use the EStop much more on the lathe because I know I won't lose position.
Les Jon Elson wrote: > > That's only true in a servo system where the encoders feed back > to the computer, and the encoder power is not interrupted by the > E-stop. So, the simple Gecko 320 scheme doesn't qualify, for > instance. If you power the Geckos off, or if they fault from a > sudden stop, then the position reference is lost. > > Jon > ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
