On 5 September 2013 08:11, Greg Bentzinger <skullwo...@yahoo.com> wrote:
> What he would like to do is replace the amps and control, re-using servos and > existing limit switch wiring and power supplies. ... > I will likely use one of the 5i25 combo's for I/O. I am considering showing > him "touchy" but I have not used it myself as yet so it will be alot more > extra homework for me. For DC servos I would either be looking at second-hand AMC drives from eBay/ New I would be looking at Granite Devices, or the properly dumb drives from Pico or Mesa. http://pico-systems.com/osc2.5/catalog/product_info.php?cPath=3&products_id=26 Mesa 7i29 (note that it handles 2 motors per card): http://www.mesanet.com/motioncardinfo.html Neither the Pico or the Mesa card are analogue-input. They both actually want a PWM signal, and both Pico and Mesa have hardware to produce that. The 7i29 is a different "family" to the 5i25, being 50-pin header rather than DB25. This is mainly a wiring issue, as I understand it, and I think that adapters exist. However unless you are committed to the 5i25 the 5i20 would be simpler. I _think_ that the analogue outputs on the 7i77 are generated by a DAC, so whilst PWM control of Pico amps with a Mesa 5i25 is almost certainly entirely possible, It isn't just a wiring issue, you would need a PWM firmware. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Learn the latest--Visual Studio 2012, SharePoint 2013, SQL 2012, more! Discover the easy way to master current and previous Microsoft technologies and advance your career. Get an incredible 1,500+ hours of step-by-step tutorial videos with LearnDevNow. Subscribe today and save! http://pubads.g.doubleclick.net/gampad/clk?id=58041391&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
