Hi Neil, That is easy doable by adding contacts on the E stop switch and creating the logic to achieve the effect you desire.
Jim ----- Original Message ----- From: "Neil Baylis" <neil.bay...@gmail.com> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> Sent: Monday, April 12, 2010 3:10 PM Subject: Re: [Emc-users] Emergency Stop switch OK, thanks. I guess they don't exist. I guess what I'll do is to add a circuit that requires the e-stop button to be pressed before a fault condition can be cleared. Then I have no choice but to twist the e-stop before resuming. Thanks, Neil On Mon, Apr 12, 2010 at 11:32 AM, Jim Fleig - CNC Services <j...@cncservices.ws> wrote: > Hi Neil, > > I believe Eric is correct. After 30 years in industry (the last 20 > specifically with CNC) I have never seen what you are describing. As Eric > mentioned, a relay that must be activated by a reset switch would do the > job. Reset switches for this purpose I have seen and included in some of > the retrofits that I have done. > > Have a good day, > > Jim > > > ----- Original Message ----- > From: "Eric Keller" <keller...@gmail.com> > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Sent: Monday, April 12, 2010 2:01 PM > Subject: Re: [Emc-users] Emergency Stop switch > > > My guess is that a switch with an actuator in it would be so expensive > that nobody has ever bothered to market one. I think your best bet is > to have a self-powering relay that can only be turned on by a > momentary switch. > Eric > > On Mon, Apr 12, 2010 at 1:53 PM, Neil Baylis <neil.bay...@gmail.com> > wrote: >> Thanks Jim, >> >> I understand how to set up such a failsafe circuit. But in addition, I >> want the actual e-stop switch to activate and latch, so that >> regardless of whether the computer generates a fault condition, or I >> do it myself, I still have to manually release the switch before >> resuming operation. >> >> >> Neil >> >> On Mon, Apr 12, 2010 at 10:39 AM, Jim Fleig - CNC Services >> <j...@cncservices.ws> wrote: >>> Hi Neil, >>> >>> Setup a failsafe circuit with the connection passing through the E-stop >>> contacts energizing a relay. If anything in the series circuit becomes >>> open >>> (E-stop button, relay contacts in E-stop circuit, overtravel limit >>> switch >>> contacts, etc.) the functions dependant upon that circuit being closed >>> stop >>> functioning. >>> >>> Someone may have a schematic example to share. If not, email me and I >>> will >>> send you an example. >>> >>> Have a good day, >>> >>> Jim >>> >>> >>> >>> ----- Original Message ----- >>> From: "Neil Baylis" <neil.bay...@gmail.com> >>> To: <emc-users@lists.sourceforge.net> >>> Sent: Monday, April 12, 2010 1:19 PM >>> Subject: [Emc-users] Emergency Stop switch >>> >>> >>>> I'm looking to source an e-stop switch. I have some already with the >>>> big red mushroom button that latches when you press it, and must be >>>> turned to release. This is good. But what I want is a switch that can >>>> also be operated by a signal from the computer. So if the computer >>>> detects an e-stop condition, the mushroom button would pop down, just >>>> as if I had pressed it by hand. I would drive it from a digital out, >>>> obviously. >>>> >>>> Does such a thing exist, and can anyone point me at a source? >>>> >>>> Thanks, >>>> >>>> Neil Baylis >>>> >>>> ------------------------------------------------------------------------------ >>>> Download Intel® Parallel Studio Eval >>>> Try the new software tools for yourself. Speed compiling, find bugs >>>> proactively, and fine-tune applications for parallel performance. >>>> See why Intel Parallel Studio got high marks during beta. >>>> http://p.sf.net/sfu/intel-sw-dev >>>> _______________________________________________ >>>> Emc-users mailing list >>>> Emc-users@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >>> >>> ------------------------------------------------------------------------------ >>> Download Intel® Parallel Studio Eval >>> Try the new software tools for yourself. Speed compiling, find bugs >>> proactively, and fine-tune applications for parallel performance. >>> See why Intel Parallel Studio got high marks during beta. >>> http://p.sf.net/sfu/intel-sw-dev >>> _______________________________________________ >>> Emc-users mailing list >>> Emc-users@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/emc-users >>> >> >> >> >> -- >> http://www.pixpopuli.com >> >> ------------------------------------------------------------------------------ >> Download Intel® Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> _______________________________________________ >> Emc-users mailing list >> Emc-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- http://www.pixpopuli.com ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
