On Tue, 2008-04-15 at 20:42 -0700, Kirk Wallace wrote: > I am losing patience with the Bandit on my Shizuoka mill, so I am ...snip > touch off after powering up? > > It's time to hit the books, but any advise is appreciated.
Here is what I have reverse engineered so far: http://www.wallacecompany.com/machine_shop/Shizuoka/00001-1a.jpg http://www.wallacecompany.com/machine_shop/Shizuoka/Shizuoka_Step_Drv-1a.png It seems the common transistors are on the high side and the other coil wires sink to ground. Each common or coil transistor in the picture is a pair of the same physical size, which seem to be wired as a Darlington. I haven't sorted out the coil control circuits yet. I am still trying to figure out if I need the inhibit signals which seem to turn off whatever is on a little bit early. If may traces are correct then there would also be of pulses in the middle of the high periods. I'll be working on this more. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/Bandit CNC) ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
