Make sure you dont power down, stay at full power, you did not mention microsteps, Are you expecting higher resolution and accuracy than is possible with a stepper. You can see regular accuracy error due to the stepper when I tested a linear axis http://www.archivist.info/cnc/screw_error/
I also have seen some terrible rotary tables and some good ones, there is a basic error at worm and gear rate which will/should be better at higher reduction ratios, all the low reduction I have measured were bad (up to .7 degree error and worm wheel rate) they were all below 60:1 the 72:1 I tested was within specification and used for some gear cutting masters I made. The Vertex 90:1 I use seems ok not done the full test I did on the 72:1. Method was angle dekkor and precision polygon. Dave Caroline On 03/03/2015, Tomaz T. <tomaz_...@hotmail.com> wrote: > What could be the reason that stepper is losing steps at very low speeds? > On my machine I have servos for XYZ axes (Pico control), and two (leadshine) > hybrid steppers for rotary axes, which I found out that they are loosing > steps at very low speeds. I think it might not be related to driver and > stepper, as I tried to switch them with some other non-hybrid stepper and > driver and results were the same, also after changing breakout board.... > My HAL content:http://pastebin.com/n6KAUE10My INI > content:http://pastebin.com/zETiGmFT > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming The Go Parallel Website, > sponsored > by Intel and developed in partnership with Slashdot Media, is your hub for > all > things parallel software development, from weekly thought leadership blogs > to > news, videos, case studies, tutorials and more. Take a look and join the > conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
