That is the way my big lathe is setup also. When it hits a limit it disconnects the servo drives from the motors, disables them electronically, and shorts the phases of the motor together with a separate contactor to brake the motors ASAP. In order to get off a limit I have to over-ride the hardware limit with a momentary pushbutton, re-enable the drives and then jog off the limit.
The feed drives are about 4 kw. Dave John Prentice wrote: > Stuart, greetings > > ----- Original Message ----- > From: "Stuart Stevenson" <stus...@gmail.com> > Sent: Monday, September 21, 2009 4:31 PM > > > >> Gentlemen, >> The Cinci was set up to use home switches. I am now using the limit >> switches for homing. I did this to better match the homing cycle to other >> machines in the shop. >> > <snip> > > Pardon me coming out of "lurk mode" to offer a comment. > > While seeing the advantage of direction sensitive disable to allow easy > jogging off the limits, personally I would want to treat limit switches on a > big machine like your 5 axis Cinci in the same way as E-stop - i.e. not rely > on software (or indeed perhaps silicon) to stop motion (ISO 13850:2006). > > Best wishes > > John Prentice > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry® 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/devconf > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Come build with us! The BlackBerry® 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/devconf _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
