On 09/24/2013 10:49 PM, andy pugh wrote: > On 24 September 2013 20:45, propcoder <marius.alks...@gmail.com> wrote: > >> I changed nvmaxcurrent parameter using setsserial to 3000. Maybe I >> should power off the 8i20 board before testing new value? > > Yes, I am pretty sure that is necessary. >
Andy, you where right. I just powered the system on next morning and it started to dance with so much energy! :) Now I am impressed how powerful 8i20 is. This heavy hand goes up from horizontal position at such acceleration and speed, just Wow! Nobody wants to stand near the robot when it moves at 2/3 of rapid speeds :)) Neither I do nor robot does need full power 8i20 can deliver. And 8i20 with fanless heatsink is barely warm. I will do more torture tests, of course, but as I played quite a lot, I am sure it will keep well. Current, watched on halscope, goes up to about 20 amps peak, 10 amps average on load and accel. I could see even more than 20 Amperes on oscillations, while PID was badly tuned. By the way, max speed setting of this axis is more than 3700 rpm with 6 pole motor, and it goes very smooth and quiet when PID-tuned! I am sure it could do even more. Thank you all for help! I am :) ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
