Gene; I wired up the G0704 sensor to my Mesa 7i76/5i25 combo and use it with Andy's Lincurve stuff for speed feedback. And full speed control via the same combo.
I'll be mentioning some of this at a seminar at the upcoming CNC Workshop. Some stuff on my blog - the Canadian name for the G0704 is KC20VS, so search for that. Blog is cnc-for-model-engineers.blogspot.com - ask questions. (gotta run - better half is waiting!) John On Sun, Jun 7, 2015 at 9:03 AM, Gene Heskett <[email protected]> wrote: > On Sunday 07 June 2015 06:31:00 Belli Button wrote: > > http://cdn0.grizzly.com/manuals/g0704_m.pdf > > Is exactly what came with the machine. The wiring diagram is in it twice, > but nothing on the PCB's. > > >From the sounds of it, its a scr or triac control. More evidence of that > in the fact that the reversing switch is wired to the motor. > > The rpms display is driven by a single slot interrupter from a disk with > round holes drilled into it on the top of the spindle. Eg, no room for > a disk like I put on the lathe, but the top cover of the gearbox could > be machined away to do something similar, but would need me to design a > new pcb to mount the slot interrupters. That means their speed display > will not work but since we can do that with linuxcnc, thats no biggie. > > Yet TBD whether I rip out their speed control and put in one of the Pico > servo amps. I am extremely pleased with how it worked on a similar sized > motor on my toy lathe. It sure simplifies the reversal as that servo > amp handles that with no relays to putz with. > > The motor kit came Friday, and thats the first Nema 34 motor I'v seen, it > will go on the z axis. Buying the package like that sure makes it nice. > Looks like all I'll have to do is mount the stuff and wire it up. > Its 2 each 470oz/in nema 23's with 8mm shafts, a 1600oz/in nema34 with a > 12mm shaft, 2 ea DM542's and a 42 volt PSU for the nema23's, a DM860 and > a 60 volt psu for the nema34, and a bare bones but all opto, breakout > board. On fleabay for a tad under $400. > > I just got to get me back into working condition. I pulled something > loose in my game knee and back getting it into position in the garage. > > Thanks Belli Button. > > 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> > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
