On Sat, 10 Oct 2009 23:02:59 -0500, you wrote:
> The SX3 or Super X3 sold by Grizzley (G0619) does use the digital >control. The X3 sold by Harbor Freight and also Grizzley (G0463) use a >speed potentiometer. All are suitable for connection to an analogue input to control speed, we've done it in testing. The problem is there are several different control boards, and motor types. Certainly the early X1, X2, X3 types with DC motors had the pot referenced to mains neutral. The later models with Brushless AC motors have a VFD, and the additional board that is connected via a ribbon cable is isolated. It still accepts a 0-10V analogue signal, from the other board at the back of the up/down speed buttons and LCD readout. Whether isolated or not, it would be foolish to supply anything other than signal from an isolated board like the following, for example http://www.cnc4pc.com/Store/osc/product_info.php?cPath=25&products_id=58 Steve Blackmore -- ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
