It's an "integrated" encoder, ( 2500 ppr incremental attached to the end of the servo) here is the servo,
http://www.automationdirect.com/adc/Shopping/Catalog/Motion_Control/Servo_Systems/Medium_Inertia_(1KW_-_3KW)_Servo_Systems/3KW_Servo_System_(Med_Inertia)/SVM-230 I just found the /A and /B were interchanged, ( the wires coming from the drive are coming out of a 50 conductor cable, 28 AWG wire, with the poorest color scheme possible to differentiate the wires, they were RED/WHITE for the /A and WHITE/RED for the /B ) I have found though, I cannot see the index-enable signal doing anything in halscope????? And I just triple checked those two little bastards. No Z-/Z index signal could be an issue maybe in the grand scheme of things???? Maybe a firmware issue? Rick On 11/25/2015 10:07 AM, Gene Heskett wrote: > On Wednesday 25 November 2015 08:59:45 Rick Lair wrote: > >> Here is a screenshot of what it looks like, after the machine has >> homed itself, http://postimg.org/image/c8s8eqret/ look at the DTG of >> the A axis, why does it look like this, and why would it take off as >> soon as it homes itself, to some random position, like the one shown, >> at MAX_VELOCITY? > If thats a servo, what sort of an encoder? > > I run my cheap table with a stepper, so no encoder involved. If I > do "home it", its to a level bubble laying on a jaw, but I use touchoff > for that zero. Handy for establishing the roughly correct angles to > turn a tool to for sharpening. That does not of course handle its > backlash and I have no automatic facility to lock it down at any > particular angle except the cheap brass thumbscrew, which is in fact > incapable of holding it. >> To me it is acting like a run away servo, but that makes no sense to >> me, because after going over things multiple times and physically >> checking the analog drive voltage and the servo drive parameters >> again, I don't see how I can get a runaway. >> >> If I jog the table, in a positive rotation, I have a positive command >> voltage going to the drive, I get a positive table rotation physically >> and I get an upward counting DRO, > > Cheers, Gene Heskett -- Thanks Rick Lair Superior Roll & Turning LLC 399 East Center Street Petersburg MI, 49270 PH: 734-279-1831 FAX: 734-279-1166 www.superiorroll.com ------------------------------------------------------------------------------ Go from Idea to Many App Stores Faster with Intel(R) XDK Give your users amazing mobile app experiences with Intel(R) XDK. Use one codebase in this all-in-one HTML5 development environment. Design, debug & build mobile apps & 2D/3D high-impact games for multiple OSs. http://pubads.g.doubleclick.net/gampad/clk?id=254741551&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
