Just to follow up on this earlier post. > But, I'm taking a bit of a wild guess and thinking that you are only > driving ONE of the motor's two phases.
This was indeed what the problem was. Using the method Jon suggested (below) we found there was no power coming into one phase of the motor. We ordered a new driver chip and swapped it out. Everything is now working great. Thanks again for your suggestions everyone. Karl > It could be a bad driver or motor, but also could very easily be a bad > connection between them. So, I'd check the wires carefully. > If that doesn't show anything, then I'd check the voltage across the > coils with a voltmeter. > There should be some voltage across the coils > any time the driver is on. If it is a bipolar driver, then it is > simple. If a unipolar, then you have to check that half of the coil > that is currently being driven. If you get no voltage across the > coil, > the driver is suspect. If you have voltage across the winding, then > ohm > out the motor's coils, as it could be an open coil. > > Jon > ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
