I am using EMC2 and a gecko servo drive to drive a servo I have mounted on my Millrite. When I set the max speed to 1.0 (I think that is 1 ips or 60 ipm) I get an error saying that the velocity is too high. I the motor/encoder/gecko drive require 2000 steps per rev and the lead screw is 5 tpi and I have a 4 to one timing belt pulley reduction between the motor and the axis so the input scale is 2000 x 4 x 5 or 40,000 steps per inch. This requires 40,000 steps per second for 1 inch per second.
I am using a 2 GHZ machine and I think I can get a higher step per second output by changing the base period and the associated periods but I am a little fuzzy on the relationship. I saw this explained here sometime in the last few months but I can't find it in my inbox. How do I relate max steps per second to base period? What is the minimum base period for a given cpu clock speed? Can someone refresh me on maximum speeds and minimum base periods etc. ? BTW I really don't need 60 ipm but it looked like a good max speed and the servo will do it with a squarewave generator input to the gecko drive. I could live with half that or so as the max traverse speed. Thanks, Cecil ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
