On Thursday 13 December 2007, Ray Henry wrote: >Pella > >Darn web site! Looks like a plasterer turned web designer -- missed >mor'n a few spots on the ceiling near the corners.
I had a better description Ray, but it wasn't printable. OTOH, could I do better? Might take me a few days, but I think so. :) >The breakout board is passive which can be both a good and bad thing. >Bad because you have to look to the parport to put out enough voltage to >signal the drives. Good because you can wire it up most any way that >you like so EMC's sigs are all available. > >Looks like the logic signals of the microstepping driver requires a +5 >volt signal. This will be an issue with on-mobo parports but can be >handled with a PCI parport card. > >H8-MD81-336 is sort of an unknown on the site. 'There is no product >that matches the search criteria.' They give you three of these and the >number inside () comes close to that of a NEMA 34 motor listed. Plenty >of torque there for a modest mill. They draw 4.2 amps with a >5 ohm >resistance. > >The motor power supply handles "68V DC at 5A." Looks like they intend >you to parallel the outputs of the two power supplies or put two drivers >on one and one on the other. Since they call them a "non regulated >switch mode power supply" I'd be just a bit nervous of paralleling them >but others would know the details of that much better than I do. Trying >to run two motors from one drive seems like it would overload the bugger >just a bit. > >So worst case IMO I'd add a parport card to my PC or an active breakout >card and I'd purchase a third power supply. > >Rayh My impression of that site was that its very light on the technical stuff we would need to know, almost on purpose, and that the quoted priced in pounds was about 25% more than I'd be comfy with. YMMV of course. >On Thu, 2007-12-13 at 13:52 +0100, Pella wrote: >> Hi, I wanna buy this cnc kit >> http://www.motioncontrolproducts.co.uk/product_info.php?cPath=5&products_i >>d=57&osCsid=f2f7789e24151d24d72b40ae1b5e7df7 but I don't know if it is >> supported by EMC2. >> >> Could you help me? >> >> Thx >> Pella -- Cheers, Gene "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Horses are forbidden to eat fire hydrants in Marshalltown, Iowa. ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
