On Saturday, 21 May 2022 08:38:01 EDT Nicklas SB Karlsson wrote: > Den 2022-05-21 kl. 14:02, skrev gene heskett: > > On Saturday, 21 May 2022 04:52:28 EDT you wrote: > >> Den 2022-05-19 kl. 23:57, skrev gene heskett: > >>> On Thursday, 19 May 2022 16:19:37 EDT Marius Alksnys wrote: > >>>> Gene, > >>>> > >>>> how about setting min and max limits to zero (or other initial > >>>> value), > >>>> maybe also not enabling B drive? > >>>> This can be done in a bash script like: > >>>> halcmd unlinkp io-board-going-to-b-servo-drive.enable-pin > >>>> halcmd setp ini.4.min_limit 0 > >>>> halcmd setp ini.4.max_limit 0 > >>>> halcmd setp ini.b.min_limit 0 > >>>> halcmd setp ini.b.max_limit 0 > >>>> > >>>> or in HAL with mux_generic > >>>> http://linuxcnc.org/docs/html/man/man9/mux_generic.9.html > >>> > >>> First I've heard of this, sounds like it could be usefull. ATM I'm > >>> carving up an e-stop coupling between linuxcnc and a couple of > >>> those > >>> 3 > >>> phase drives. > >> > >> These 3 phase drives have STO Safe Torque Off you connect to a real > >> emergency stop button? You use a safety relay? > > > > Not a relay in some cases, although on this machine there is a relay > > because there's two power supplies. A 120 volt to run most stuff, and > > a 250 for the spindle motor. > > > > The low voltage 127 feed and the 254 for the vfd are interlocked in > > hal by being disabled when F2 is toggled off. In this machine by a > > relay, but in most of my machines by BIG SSR's controlled by logic > > level signals. > > > > The Fault outputs are simply linked into the E-stop to toggle F2 off, > > and by cross linkage in the hal file, toggles F1 to the inactive > > state also. > A safety relay like this one in link > https://se.farnell.com/pilz/pnozx4/relay-safety-3pst-no-240vac-8a/dp/43 > 01237?ost=pnozx4 missing before connected to the emergency button. This > one seems to be German made, me myself have French pilz in my machine > and guess it work equally well. > > It is common relay have an extra normally closed NC contact and plan is > to connect these in series with a magnetic unlock mechanism to the > door. If relays are correctly designed door will be locked until > relays are fully closed. > No doors or housings on these beasts. > > Nicklas Karlsson > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > .
Cheers, Gene Heskett. -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author, 1940) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
