Hello again guys, Well, the situation is this: The machine always turns on with all it's functions working properly, with the exception of the screen which sometimes works and sometimes does not (when it fails sometimes there's no signal at all on the LCD monitor, and sometimes there are white lines on the screen). Voltage on the graphics board falls within the limits the manual says it should be so I'm guessing this should be a graphics card problem, but this could also be a main board problem too, no way to know.
It's a real pain in the ass because the machine all works properly, but I also have all the means and components to convert it to LCNC (replacing the servo motors entirely, I don't have too much time to experiment controlling the original fanuc motors). If I replace the fanuc motors I will try to control them outside the machine with a new encoder and a generic driver for PM motors so I can re-use them. Or maybe I'll sell them on ebay with their drives and power supply and forget about fanuc equipment. Next time we purchase a machine, we'll try to find one with the control burned and convert it directly to LCNC, I don't even need to mention the advantages... Thank you guys and I hope you're all doing well! El sáb, 9 dic 2023 a las 13:55, gene heskett (<ghesk...@shentel.net>) escribió: > On 12/9/23 10:19, John Figie wrote: > > Gene > > > > Yes I understand the catastrophic failure mode of Buck converters. But > what > > is BBLB? > > > Built By Lowest Bidder, John. Slanguage I assumed everybody understood. > ;o)> > > I still have one or two of those, not in service except as proof of > concept maybe, with an output display even, $9.95 on fleabay at the > time. A couple decades ago now. I needed some 5 volts for a breakout > board, so it was more the smoke and aggravation than the money, worked > less than a year, replaced by a new breakout board and a 5 volt 5 amp > supply that is still running. With all the various pi clones running 3d > printers on those 5x5 supplies, I've 6 or 7 of those here now, zip > failures in 15+ years for some of them. Shopping on amazon, can > occasionally get them for under $15 yet. My biggest lathe started out on > an rpi3b running on its wall wart, 2 amp wasn't stable by the time the > interfaceing load was added but I put a 5x5 box in, and an rpi4b now > runs from long power failure to long power failure. Considering it's on > a 650 WS ups, and there's a 20kw auto standby in the back yard with a 5 > second start to power output. the long power failures are me pulling the > plug to swap u-sd cards that boot it. I wish my wintel dells were that > good. All of the pi's and dell's also control all machine power from > the F1 key of LCNC, so they're never turned off, just the machines. > Those machines converted to stepper/servo's are also powered down by a > stepper loss of home, but while well tested, has never occurred mid job. > I'm in the middle of collecting enough stuff to rebuild my go704 4 axis > milling machine to use them. Costs maybe an additional $20 bill per axis > but well worth it. Runs much cooler, does away with pid's in linuxcnc > because the pid is in the smarter controller, They do exactly what the > TP tells them to do or stop LCNC in the next millisecond. > > I'm also not a for profit shop, just a hobbyist, clearly with too many > hobbies. I'm a CET, (we teach EE's what they should have learned in > school), retired broadcast Chief Engineer in danger of falling asleep in > my diabetic & dotage years, 89 so far. > > > > John Figie > > > > On Sat, Dec 9, 2023, 7:39 AM gene heskett <ghesk...@shentel.net> wrote: > > > >> On 12/9/23 06:13, andy pugh wrote: > >>> On Wed, 6 Dec 2023 at 16:08, Leonardo Marsaglia <ldmarsag...@gmail.com > > > >> wrote: > >>>> > >>>> Just a little update. We're going to try and feed all the voltages on > >> the > >>>> main board of the control (+5V, +15V, -15V, and 24V) with normal > >> switching > >>>> PSUs > >>> > >>> Depending on the current requirements on each channel you might want > >>> to look at using a single PSU and a bunch of buck or boost converter > >>> modules. > >>> > >>> My mill has a 2kw 24V supply and then 4x buck converters (with LED > >>> voltage displays) to feed the PC motherboard, 5V and 12V logic. > >>> > >> Those tend to be BBLB stuff, and I've not had great luck. A to 5 volt > >> buck crowbared thru, putting the full 24 on the 5 volt stuff with the > >> expected results, lots of smoke. Lasted under a year, so I don't > >> consider it since. > >> 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 > >> Emc-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/emc-users > >> > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > 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 > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
