Are your run caps connected to one leg only? On Sat, Jul 31, 2010 at 11:09 PM, Jon Elson <[email protected]> wrote: > Speaker To-Dirt wrote: >> Hi All: >> >> Here's my RPC values hot off the line. >> >> Unloaded Loaded (Manual mill spindle going) >> ----------------------------------------------- >> 235 V 235 V >> 269 V 257 V >> 245 V 238 V >> >> Sorry those old numbers must have been from my RPC build and not the final >> numbers after the run time caps were put in. I'm fairly sure that the 257 V >> is the co-generated line. I'll have to trace this out. >> > OK, now this makes sense, you are running one of your stepper drivers on > about 12% overvoltage. Depending on what the transformer taps are set > to, that may actually be worse than a 12% overvoltage. The drive can > probably be set for this voltage, but I am guessing you just left the > settings where they were. You may be lucky these fuses were blowing > leading you to discover the problem before the transistors started to pop. > This much imbalance is not great for the spindle motor, it can be HELL > on the electronics. > > Jon > > ------------------------------------------------------------------------------ > The Palm PDK Hot Apps Program offers developers who use the > Plug-In Development Kit to bring their C/C++ apps to Palm for a share > of $1 Million in cash or HP Products. Visit us here for more details: > http://p.sf.net/sfu/dev2dev-palm > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users >
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