Replace the electrolytic capacitors in the power supply. If you can get one of these meters you can verify this is a good solution by measuring the one of the old ones with a new one. https://vi.aliexpress.com/item/4001294233271.html
The 3 phase motor controller on our expensive Bosch Fridge failed after 10 years. Replacing the capacitors put the power supply voltages that ran the motor control part back to the correct value. A new capacitor, IIRC, had an ESR of about 0.5 ohms. The old one was 30 Ohms. There was no physical visual indication that there was a problem. Fridge has been running perfectly now a year later. John > -----Original Message----- > From: Leonardo Marsaglia [mailto:ldmarsag...@gmail.com] > Sent: December 2, 2023 7:58 AM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] OT Fanuc ot-c cpu power supply A16B-1212-0950 > > Hello everybody, I hope you're all doing well! > > Sorry for the OT but I think this is a good place to ask for what I intend > to do. > > One of our lathes has this Fanuc OT-C with this a16b-1212-0950 power supply > which is now failing. I can only use the lathe a couple of hours before the > control stops working and the PSU lights its alarm led. > > The main problem is, these PSU are pretty expensive when purchased new, > and > the ones refurbished take almost three weeks to arrive in my country. > > So, one of my ideas to keep the lathe running before I completely retrofit > it to LCNC is to install generic switching PSUs to match the voltages and > fool the CNC and it's control signals (which I don't know if they are too > complicated to fool but apparently there are only a couple of pins on the > PSU for that purpose, so It shouldn't be that complicated). > > Is this nonsense? should I even bother? Because the next step really is to > adapt the machine to LCNC and forget about all these problems once and for > all. But if I can manage to fool the control this could be done in a couple > of hours. > > Thanks as always for your help guys! > > Leonardo > > _______________________________________________ > 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
