On Wednesday 10 February 2021 11:42:28 Matthew Herd wrote: > I agree, I feel like that’s a fairly safe assumption, although I > acknowledge that it is possible the drives might run away. I figure > the best way to handle drive faults is to trigger an e-stop (via HAL) > so that all drives and the spindle halt motion. Then you could > one-shot the fault clear lines on the drives when you power up the > machine. This would handle the most common faults (i.e. I crashed my > machine into the side of my vise/table/etc) and avoid trying to slot > your table or vise with a trashed cutter. While the following error > would also trigger the machine to stop, it’s yet another way to ensure > that things aren’t made worse. And a one-shot to clear the faults > would avoid the need to power cycle, rehome, etc. > > > On Feb 10, 2021, at 11:29 AM, andy pugh <bodge...@gmail.com> wrote: > > > > I was assuming that the faulted drives would disable themselves. I > > was thinking about what to do with the drives that have not faulted. > Power cycling these new 3 phase step pulse driven servos is appasrently the only way to reset the error, so on the Sheldon, a fault from one of them resets F2, in turn killing all power to the motor psu's, which of coarse unsets the home state too. Takes about 5 seconds or a little more because the unloaded psu's take so long to decay. The driver makers really should give us a reset input unless there is one in the rj45 thats undocumented. Cycling the enable doesn't do it in my tests of doing that. So I just count ten chimpanzee's before hittin the F2 key to get thing restarted, while pulling the tool so I can rehome it without hitting the work with the tool.
> _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
