Thanks Jon. I am controlling a 1988 fanuc velocity spindle drive. And no Idea about isolation. Not keen to try it lol. Really I just want a isolated 0-10v virtual pot like the Mesa 7i76 has. Otherwise I might daisy chain in a 7i76 just for the spindle io. but that is such a waste lol.
On Mon, Nov 2, 2020, 11:03 AM Jon Elson <el...@pico-systems.com> wrote: > On 11/01/2020 12:46 PM, Ed wrote: > > On 11/1/20 10:30 AM, andy pugh wrote: > >> On Sun, 1 Nov 2020 at 04:43, andrew beck > >> <andrewbeck0...@gmail.com> wrote: > >> > >>> On a 7i76 the 0_10v is isolated from the Mesa card I > >>> think. Is a 7i77 > >>> similar? I just a bit cagy about connecting up > >>> electrically to the VFD > >>> inputs. As I don't want to blow anything. > Most VFDs have isolation between the mains and the control > inputs. > You definitely want to make sure of this before connecting > anything up. > (Some SCR-type motor drives do NOT have such isolation.) > > >> > > Where would a Mesa SpinX1 or a Pico Spindle DAC fit in here? > The Pico Systems Spindle DAC is an 8-bit DAC with parallel > inputs, and two other inputs that > enable either positive or negative outputs of 0-10 V. It is > not isolated, so depends on the > VFD to be isolated. > > Jon > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
