RogerN wrote: >I have my VFD forward and reverse connected to the M5i20 through the >7i37 board, M3 & M4 works as they should. > >Now I need to connect the spindle speed control. The basic idea is to >get the spindle speed command to the M5i20 dac 3. Since I have >different gears, I would like to use my spindle encoder feedback and >either increase or decrease the command to get the programmed speed. > > You can use a PID on the spindle speed. Connect the PID command input to motion.spindle-speed-out, tune PID. The only trouble will be if you need a speed that can't be reached in the present gear. Ideally, you'd have an input or two that tell EMC what gear it's in, and you can use a comparator block to check whether the requested speed can be reached in the current gear (and pop up a dialog telling the user to change gears if not). That's not a trivial setup though.
>Also, my drive will handle about 300-400 rpm per second deceleration >without dynamic braking. Are there trajectory settings for spindle >speed? > > You can use a limit block for this, if tuning the PID doesn't do it for you. - Steve ------------------------------------------------------------------------- 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
