On Sun, 9/22/13, Marius Liebenberg <mar...@mastercut.co.za> wrote: Subject: Re: [Emc-users] Very weird thing with my stepper motors. They don't like to be moved while running. To: emc-users@lists.sourceforge.net Date: Sunday, September 22, 2013, 1:49 AM It sounds like you have the step and dir swapped. You could movement but very erratic in one direction. Those drives are pretty good and reliable. Signals must be active low. Strap all the + terminals to 5v and then pull low with your BOB. ---------------
Here's a link to the BOB manual. http://www.tecnoflexo.com.br/site/fotos/download/17/17.pdf Scroll down to the picture, X axis is the upper right connector, terminals left to right are enable, step, direction and ground. Same for the other four axes. I unplugged the enable connector from the drive, left the wires connected to the plug because I jumpered all the - lines together at the drive and the - enable line is the one I connected to the ground terminal for X axis. This is the bit of useful info I wasn't able to find anywhere for this BOB. "Don't use the enable line because it doesn't effing work right!" The LED for each axis is nice, lets you know that something should be happening. NOW the motor will go both directions. Still has the "motion sickness". When doing the test run there seems to be a bit of a pulsing harmonic in the motor. Not rough and loud like when one coil is wired backwards but it vibrates everything on the table. I bought 30 feet of 18 gauge four conductor cable to use for the control lines and for the power wires to the motors. For the test I have the short motor wires connected directly to the drive and a foot of the four conductor cable from the BOB to the drive. Interference amongst the control wires? Will it be a problem for the power wires? I also got 10 feet of two conductor cable to use for DC from the 60 volt power supplies to the drives. Guess I'll have to mount one to the table and see if moving axially while firmly constrained radially will keep it working. Might be something to do with the latency that gets over 15,000? That test has showed it over 20,000 at times. I have another couple of PCs I can try to see if they have lower latency. Pentium 4 boxes faster than the 1ghz P3 I'm testing with. Need to find or make some 14mm female to 5/8" male shaft adapter/extenders to mount the motor pulleys first before I can try actually driving the table. ------------------------------------------------------------------------------ LIMITED TIME SALE - Full Year of Microsoft Training For Just $49.99! 1,500+ hours of tutorials including VisualStudio 2012, Windows 8, SharePoint 2013, SQL 2012, MVC 4, more. BEST VALUE: New Multi-Library Power Pack includes Mobile, Cloud, Java, and UX Design. Lowest price ever! Ends 9/22/13. http://pubads.g.doubleclick.net/gampad/clk?id=64545871&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
