On Mon, 5 Aug 2013, John Alexander Stewart wrote: > Date: Mon, 5 Aug 2013 11:05:30 -0400 > From: John Alexander Stewart <ivatt...@gmail.com> > Reply-To: "Enhanced Machine Controller (EMC)" > <emc-users@lists.sourceforge.net> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] slow speed stepping - am I missing something? > > Ok, so bumping up current to 3A from 2.2A this morning did not change > anything. > > The power supply is a 48v switcher from Keiling; I'm thinking of removing > all other axes and just testing one axis, and/or find another power supply > to see if it might be the issue. > > Two questions, for those who are brainiacs here. ;-) > > 1) Stepper motor wiring, if you reverse say A or A', does it affect holding > torque? I note the GeckoDrive web site, for their steppers give a colour > coding. I was under the assumption that coil polarity did not matter, am I > wrong? > > 2) Here's my 5i25 config section for the G540: > > setp hm2_5i25.0.stepgen.01.position-scale [AXIS_1]SCALE > setp hm2_5i25.0.stepgen.01.steplen 1500 > setp hm2_5i25.0.stepgen.01.stepspace 2500 > setp hm2_5i25.0.stepgen.01.dirhold 2000 > setp hm2_5i25.0.stepgen.01.dirsetup 2000 > setp hm2_5i25.0.stepgen.01.maxaccel [AXIS_1]STEPGEN_MAXACCEL > setp hm2_5i25.0.stepgen.01.maxvel [AXIS_1]STEPGEN_MAXVEL > setp hm2_5i25.0.stepgen.01.step_type 0 > > Which came from the fora. > > (SCALE = 500; STEPGEN_MAXACCEL 660.0; STEPGEN_MAXVEL = 190.0) > > I don't expect this to be an issue; as it runs just fine from about 2mm/sec > on up for hours at a time. > > Thanks again for any "try this" stuff. > > JohnS.
What is the stepgens ferror limit? (If ferror is set for a reasonably small limit, this will check that the stepgen hardware generated the correct number of step pulses) Whats is the machines maxaccel for axis 1? > ------------------------------------------------------------------------------ > Get your SQL database under version control now! > Version control is standard for application code, but databases havent > caught up. So what steps can you take to put your SQL databases under > version control? Why should you start doing it? Read more to find out. > http://pubads.g.doubleclick.net/gampad/clk?id=49501711&iu=/4140/ostg.clktrk > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------------ Get your SQL database under version control now! Version control is standard for application code, but databases havent caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out. http://pubads.g.doubleclick.net/gampad/clk?id=49501711&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
