On Thu, 2009-12-10 at 22:27 +0000, Andy Pugh wrote: > 2009/12/10 Hubert Bahr <[email protected]>: > > > Does anybody else have an > > explanation for 4 phases with only 4 wires? > > It might be 2 phase bipolar, but labelled oddly. > ie imagine that P1-P4 drive a motor wire each, at +40V if the pin is > high and 0V if the pin is low. > > Here's plan: after checking that the drive to that connector is +5 V > logic level, wire it into the P-port of the EMC machine and plot the > pattern on Halscope. using EMC as a simple oscilloscope.
The four inputs might control each half of the two h-bridges (four halves). This may help prevent shoot through. That's what I did here: http://wallacecompany.com/E45/Rotor%20Cam/rotor_driver-2b.png http://wallacecompany.com/E45/rotor_cam.html -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
