You can do it with relays and a timer. Or you can get a 100.00 AutoationDirect.com plc to do it. DL05
Bob Bevins Project Manager Ingersoll Rand Security Technologies bob_bev...@irco.com 514 231-6241 -----Original Message----- From: Neil Baylis [mailto:neil.bay...@gmail.com] Sent: Monday, April 12, 2010 9:57 PM To: Enhanced Machine Controller (EMC) Subject: Re: [Emc-users] Emergency Stop switch > I'm sure that Pilz, Faulhaber, Schaffner and a bunch of other outfits > have a device that will do what you want, in some manner. I don't think > I have ever seen exactly a red mushroom switch that would mechanically > activate, but these companies and others have safety-rated relays (for > about $400) and safety-duty PLCs (about a grand and WAY up) for these > sorts of requirements. They are all designed with extensive > fault-tolerant, fail-safe electronic and mechanical components. Yeah, I've seen some of these devices. You wouldn't think e-stop could get so complicated. > The problem with making it mechanical > through the red button is that someone intentionally or accidentally > jamming the button could prevent the E-stop action from happening. I wasn't thinking that the computer would use this as a way to stop the machine. Rather, the computer would stop the machine however it already does, but in addition it would press the e-stop, forcing the operator to twist/lift the button before resuming, even if he never pressed the button. Neil ------------------------------------------------------------------------------ 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 The information contained in this message is privileged and intended only for the recipients named. If the reader is not a representative of the intended recipient, any review, dissemination or copying of this message or the information it contains is prohibited. If you have received this message in error, please immediately notify the sender, and delete the original message and attachments. ------------------------------------------------------------------------------ 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
