Stewart Have a look at the timing requirements for the G540. As far as I recall it needs some longer pulses. You have to set the step pulse length as well as some other settings. There is some wiki stuff about this.
On 2013/08/04 10:51 PM, John Alexander Stewart wrote: > I have a stepper based mill that I have reconfigured to use a Gecko G540. > > Stepper motors rated 3A, with the G540 resistor setup, I'm using a 2.2k > resistor, giving 2.2A. Power supply is 43v. (48 v switcher, tuned down to > 43v because that's the voltage the G540 docs say to use with the inductance > of these motors) > > It can run all day back and forth, always hitting "0", at speeds like up to > 1,000 MM/min, and faster. > > When I try 5mm/min, the machine is fine. 2mm/min and it's fine, too, but at > about 1mm/min, the machine misses steps. Or, will not step at all. > > I have the system apart, and have the ability to tweak the G540 trim pots, > and no matter what I do, I can't get the machine to step at about 2mm/min > or slower. > > Should I be able to? I assume so - otherwise arcs and other slight angles > would not be CNC machinable. > > Help/comments/guidance requested. > > John A. Stewart. > ------------------------------------------------------------------------------ > 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 > -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130804-0, 2013/08/04 Tested on: 2013/08/04 11:14:19 PM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com ------------------------------------------------------------------------------ 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
