Steve from Tube Gauge wrote: > Can the stepper motor 'step & direction' output from EMC2 be used to > run a servo based system that has step & direction input amplifiers > where the servo motor encoder feed back goes into the amp and not EMC2? > I believe the Yaskawa Sigma II amps can run in this mode. My > thought was to build a simpler system and avoid the additional motion > control boards if the Yaskawa amps could connect directly to an > isolator/break-out board from the parallel port. Or are these two > completely different systems with only the "step & direction" words in > common? > Yes, in theory you can do this. The Yaskawa Servo-Pak drives can accept step and direction signals to optocouplers on their inputs. You may need a breakout board to supply enough current for their opto-coupled inputs to work.
The problem is the Yaskawa amp/motor setups usually have pretty high resolution, and so you need to provide fairly high step pulse rates to get reasonable speed out of them. I think the native resolution might be 16384 counts / rev or something like that. You can add pulse multiplying with their electronic gearing feature, but that reduces resolution. Other than the speed issue, it certainly should work. Jon ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
