I know I,m missing something very simple here but: If I set max speed to equal feed speed the motors freeze on rapid moves. With max speed about 15 they just about start turning. If I set max speed to 20mm/s the motors do rapids move but do not go to the right position.
There is also a reluctance for all motors to move in positive direction at lower max speeds All this also seems to happen in Mach3 Unless anyone can figire this out I am going to rewire the drivers and power supply with shielded cable and fix them to an aluminium base. Aaron > ----- Original Message ----- > From: "Dave Engvall" <[EMAIL PROTECTED]> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Subject: Re: [Emc-users] ini.fiiles > Date: Tue, 27 May 2008 15:37:38 -0700 > > > Notice that he is stalling on rapids so his max velocity is too high: > but the procedure below should tell him where > to set it. :-) > > Dave > On May 27, 2008, at 3:05 PM, Alex Joni wrote: > > > Aaron, > > > > another way to try this: > > start with the old config (speed at 10 mm/second). > > Do a series of tests with increasing F-words (G1 X100 F100, G1X0 F150, > > etc..) > > Notice when it starts to fall apart, and let us know the speed. > > The ini should hold about 80% of the value divided by 60. > > > > Regards, > > Alex > > > > ----- Original Message ----- > > From: "aaron Moore" <[EMAIL PROTECTED]> > > To: "Enhanced Machine Controller (EMC)" <emc- [EMAIL PROTECTED]> > > Sent: Tuesday, May 27, 2008 11:00 PM > > Subject: Re: [Emc-users] ini.fiiles > > > > > >> Rayh > >> > >> I just set the velocity to 4 and acceleration to 4. Feed moves are okay, > >> but the motors just freeze on rapid moves, and I'm tearing my hair out, > >> and > >> the wife is about to divorce me. > >> > >> Thanks > >> Aaron > >> > >> > >> > >> > >>> ----- Original Message ----- > >>> From: "Ray Henry" <[EMAIL PROTECTED]> > >>> To: "Enhanced Machine Controller (EMC)" <emc- [EMAIL PROTECTED]> > >>> Subject: Re: [Emc-users] ini.fiiles > >>> Date: Tue, 27 May 2008 09:58:16 -0500 > >>> > >>> > >>> > >>> Hi Aaron > >>> > >>> As I see it the problem is that your config runs the rapids much to fast > >>> for the ability of your hardware. > >>> > >>> MAX_VELOCITY = 10.0 > >>> > >>> Means 10mm per second or 600 mm per minute. If you lower that to > >>> > >>> MAX_VELOCITY = 4.0 > >>> > >>> your rapids will run about 240 mm a minute. Since that is not much > >>> faster than your feedrate you should be okay. But I would not be afraid > >>> to play with the numbers until you discover a combination that moves the > >>> machine about 80% of the speed at which you begin loosing steps. > >>> > >>> HTH > >>> > >>> Rayh > >>> > >>> > >>> > >>> > >>> > >>> > >>> > >>> On Tue, 2008-05-27 at 14:27 +0000, aaron Moore wrote: > >>>> Between 100mm and 200mm a minute > >>>> Aaron > >>>>> ----- Original Message ----- > >>>>> From: "Kenneth Lerman" <[EMAIL PROTECTED]> > >>>>> To: "Enhanced Machine Controller (EMC)" > >> <emc-users@lists.sourceforge.net> > >>>>> Subject: Re: [Emc-users] ini.fiiles > >>>>> Date: Tue, 27 May 2008 08:52:04 -0400 > >>>>>>> Alex, as usual, identified a key question. > >>>>>> Just to expand a little, it is important because rapids (G0) use > >> the > >>>>> maximum velocity; but cutting (G1, G2, G3) use the last specified > >> Fword > >>>>> as the velocity. Generally, that will be much slower than the > >> maximum. > >>>>>> So, to repeat Alex's question, what feed rate are you using? > >>>>>> Ken > >>>>>>>> Alex Joni wrote: > >>>>>> What feedrate do you use for cutting? > >>>>>> > >>>>>> Regards, > >>>>>> Alex > >>>>>> > >>>>>> ----- Original Message ----- From: "aaron Moore" > >>>> <[EMAIL PROTECTED]> > >>>>>> To: "EMC userslist" <emc-users@lists.sourceforge.net> > >>>>>> Sent: Tuesday, May 27, 2008 10:24 AM > >>>>>> Subject: [Emc-users] ini.fiiles > >>>>>> > >>>>>> > >>>>>>> Hi > >>>>>>> Could someone have a look at my ini. files to see if I am > >>>> missing something. > >>>>>>> > >>>>>>> Still have the same problem with my stepper router system. > >>>>>>> Cutting moves seem to go okay, but rapid moves screw the > >>>> plot up > >>>>>>> completely even when max vel and max acc are the same as > >>>> cutting > >> speed. I am going to rewire drivers and powersupply > >>>> with > >> shielded > >>>>>>> cable and fix them to an aluminium backing board, but in the > >>>>>>> mean time do these files look okay? > >>>>>>> > >>>>>>> Also steppconfig wizard still will not test my axis although > >>>> it > >> will change config files. > >>>>>>> > >>>>>>> > >>>> > >> http://www.quickfilepost.com/download.do? > >> get=647fa4e602ea153fa1399379c64108ba > >>>>>>> > >>>> > >> http://www.quickfilepost.com/download.do? > >> get=d576ac74852a64a2873d1f43bdd26279 > >>>>>>> > >>>>>>> Thanks to all > >>>>>>> > >>>>>>> Aaron > >>>>>>> > >>>>>> > >>>>>> > >>>>> > >>> -------------------------------------------------------------------- ----- > >>>>>> This SF.net email is sponsored by: Microsoft > >>>>>> Defy all challenges. Microsoft(R) Visual Studio 2008. > >>>>>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >>>>>> _______________________________________________ > >>>>>> Emc-users mailing list > >>>>>> Emc-users@lists.sourceforge.net > >>>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>>>> -- > >>>>> Kenneth Lerman > >>>>> Mark Kenny Products Company, LLC > >>>>> 55 Main Street > >>>>> Newtown, CT 06470 > >>>>> 888-ISO-SEVO > >>>>> 203-426-7166 > >>>>> > >>> -------------------------------------------------------------------- ----- > >>>>> This SF.net email is sponsored by: Microsoft > >>>>> Defy all challenges. Microsoft(R) Visual Studio 2008. > >>>>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >>>>> _______________________________________________ > >>>>> Emc-users mailing list > >>>>> Emc-users@lists.sourceforge.net > >>>>> https://lists.sourceforge.net/lists/listinfo/emc-users > >>>> > >>>>> > >>>> > >>>> > >>> > >>> > >>> -------------------------------------------------------------------- ----- > >>> This SF.net email is sponsored by: Microsoft > >>> Defy all challenges. Microsoft(R) Visual Studio 2008. > >>> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >>> _______________________________________________ > >>> Emc-users mailing list > >>> Emc-users@lists.sourceforge.net > >>> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > >>> > >> > >> > >> -- Powered by Outblaze > >> > >> --------------------------------------------------------------------- ---- > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2008. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >> _______________________________________________ > >> Emc-users mailing list > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > ---------------------------------------------------------------------- --- > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2008. > > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Powered by Outblaze ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
