On 12/2/23 10:58, Leonardo Marsaglia wrote:
Notes from a CET, Leonardo.
Bordeerline semi might be suspect but very rarely take two hows to show
a problem, Usually under 10 minutes
Getting closer to the top of the list it might be a carbon composition
resister, look for discolored paint on them all. I'm amazed at the
design engineers that never consider the breakdwn voltage of 10 meg 1/2
wart resistor, it is only 50 volts!
Top of the list is aging electrolytic capacitors, they should NOT heat.
let it run till it fails, shut it off and feel for any hotter than the
chassis its sitting on. A ten F difference will be you clue. If more
than 5 years old they are about used up anyway.
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
Take care & stay well, and good luck Leonardo.
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Cheers, Gene Heskett.
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