https://forum.linuxcnc.org/38-general-linuxcnc-questions/48987-trying-to-build-find-a-stmbl
> -----Original Message----- > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > Sent: December 5, 2023 6:02 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] OT Fanuc ot-c cpu power supply A16B-1212-0950 > > Well, from what I can see on Granite Devices website, their Argon servo > drives are now discontinued so that eliminates one big possibility for > replacing the fanuc drives and keep the motors. I don't know if Pico > systems or MESA has a drive for the power these motors require. > Although I'm not going to use them nearly as hard as they are capable of... > > El mar, 5 dic 2023 a las 10:15, Leonardo Marsaglia (<ldmarsag...@gmail.com>) > escribi�: > > > Hello guys, and thanks for all the replies! > > > > Well, we swapped the majority of the capacitors on the board and we still > > get the alarm on the PSU. I'm almost inclined to consider this a LCNC > > project and start doing the conversion. > > > > One thing I'm considering before doing that is if It's possible to use the > > original Fanuc Servo motors replacing only the drives. I know the drives > > will not be usable because they communicate with their own Fanuc serial > > protocol, but maybe there's a chance I can use the same motors. > > > > I'm attaching a picture of the X axis motor so you can see. I guess it > > should be possible to control it, but I don't really know how the encoder > > works. I know there's a Hostmot encoder module for Fanuc but I don't > know > > anything about them so swapping the servo motors is another option too. I > > have several servo motors here just in case this happened so I can use > them. > > > > Thanks again a lot for your help guys! Sorry that I don't reply > > individually :) > > > > El dom, 3 dic 2023 a las 9:00, gene heskett (<ghesk...@shentel.net>) > > escribi�: > > > >> On 12/3/23 04:42, Roland Jollivet wrote: > >> > If you can obtain/borrow any thermal imaging device, then run with the > >> PSU > >> > with covers off and check every 5min. You should identify a cap-thermal > >> > problem. > >> > > >> For that, a $500 ir imager would be nice, but a $29 ir thermometer from > >> the local lumber yard can do as well. Leonardo might even have one of > >> those in his toolbox, if only to check his food for adequate cooking. I > >> do. When I'm on the road, living out of the fridge and microwave of a > >> motel room. > >> > > >> > > >> > On Sat, 2 Dec 2023 at 21:14, John Dammeyer > <jo...@autoartisans.com> > >> wrote: > >> > > >> >>> From: Chris Albertson [mailto:albertson.ch...@gmail.com] > >> >>> > >> >>> If it is a simple linear power supply, yes they are very easy to debug > >> >> and > >> >>> repair, LIkey it is the caps. > >> >>> > >> >>> But switching power supplies are much harder to debug, You can > guess > >> it > >> >>> might be the same issue but these have dozens of parts that can fail.. > >> >> In any > >> >>> case, the cost to repair is small. > >> >>> > >> >> > >> >> I disagree. Switching power supplies are way more likely to fail from > >> >> high ESR. That the system runs for a short while and then fails is > >> again a > >> >> symptom of a capacitor overheating due to high ESR. Or the voltage is > >> >> right on the edge and as the cap warms up the heat results in a change > >> that > >> >> results in the power supply moving out of spec. There may even be > >> enough > >> >> heat developed on the board that a solder joint becomes unreliable. > >> >> > >> >> In the past even PC motherboards have been repaired by a wholesale > >> swap of > >> >> the electrolytics. > >> >> > >> >> So what I would do is an initial survey of the electrolytic capacitors > >> >> inside the power supply and order a set. That way the machine can > >> still > >> >> run for an hour or so a day while you wait for parts from a reputable > >> >> source. Then replace the capacitor when they arrive. That won't > >> prevent > >> >> the power supply from working again and it may well fix the 1 to 2 hour > >> >> failure period. In either case $30 or so worth of caps is cheap. > >> >> John > >> >> > >> >> > >> >> > >> >> _______________________________________________ > >> >> 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 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
