On Wednesday 15 June 2016 07:06:30 andy pugh wrote: > On 15 June 2016 at 11:43, Gene Heskett <[email protected]> wrote: > > Does this sound like its doable? > > Yes, but, well, over-complicated.
Well, I had at one point, considered switching to the ATPID, but from the man page, it sounds dangerous to demonstrated fragile drive parts, difficult to control. Starting and stopping it by writing the correct setp commands while live seems to be a very clumsy way. Top that with there having been very close to zero discussion on the list by anyone else using it. So I've no idea if its safe to use or what. I also get the impression I'd have to have it recalibrate itself when I change the backgear because that changes the effective mass of the chuck in terms of what the motor is seeing. Keeping in mind this control is 4 quadrant and that because of that, there is a limit3 in front of the PID also so it won't break/strip drive parts when doing the turnarounds for rigid tapping. This same driver on the G0704's 1 hp spindle can reverse that relatively light weight spindle at 2500 rpms in less than 1 second if un-restrained. I hear the squeak of the driver going into current regulation for a fraction of a second, but it does get the job done. But the 5" chuck on this lathe weighs 10+ lbs and takes much longer to reverse given the motor power available. Thanks Andy. 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) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ What NetFlow Analyzer can do for you? Monitors network bandwidth and traffic patterns at an interface-level. Reveals which users, apps, and protocols are consuming the most bandwidth. Provides multi-vendor support for NetFlow, J-Flow, sFlow and other flows. Make informed decisions using capacity planning reports. http://pubads.g.doubleclick.net/gampad/clk?id=1444514421&iu=/41014381 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
