Kirk Kirk Wallace wrote: > On Sun, 2008-11-30 at 20:20 -0700, [EMAIL PROTECTED] wrote: > >> Hi >> I reduced Default_valacity =1. >> Max_velacity =2.0 >> Default_acceleration = 2.0 >> Max_acceleration =3.0 >> >> The picture is: >> www.conceptmachinery.com/Sh12.jpg >> >> >> >> I reduced most of them by 2-3 times and graph looks good. I will post it >> in 20 minutes. >> I am interesting why my drive can not output more voltage? >> Not power enough? It is SD-94 8 amp constant from servo dynamic >> http://www.servodynamics.com/sd94p_servodrive.html >> thanks >> Aram >> > > This drive has its own PID feedback built in. You may need to decide > which PID loopback system you want to use, EMC2 or servo drive. I would > go with a "dumb" motor amp myself. Or, others here have a way to deal > with "smart" drivers. Or, I may be, all together, off base. > ------------ > Kirk > http://www.wallacecompany.com/machine_shop/ > > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > you're right often a cnc control loop will fight a driver control loop because there's 2 loops controlling one process and one must be dummied up so the other can be boss and usually the cnc control cannot be dummied so the driver P gain gets 'weakened' ( i and d may get nulled so the driver is basically P )
anyway you mention a 'dumb' driver anything you know of for AC drives? i've done this with lots of copley's but those were dc brushed amps thanks tomp ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
