Hello partners
I will tell you about an experience I had with a Fanunc RJ-2 S-420I. As the title describes, he had many unexpected behaviors and they were not repeated. The failures always alternated. The Main CPU changed faults, sometimes the robot turned on without problems, then the teach pandat hung up, we changed the teach pandat, cable, it did not let it enter Boot Mode, sometimes it did but the teach froze, etc etc.
In short, the power unit did not indicate errors. But it seems that some defective capacitor or component generated bad supply voltage for the CPU and caused these unexpected behaviors.
We changed the power unit and I manage to run everything correctly.
Later we will measure the failing power supply, with an oscilloscope, and try to change some basic electronic components, if we find the specific failure of the component, we will follow the thread.
Regards, good luck in your work and hugs
Español
Hola compañeros
Les comento una experiencia que tuve con un Fanunc RJ-2 S-420I. Como describe el titulo, tubo muchos comportamientos inesperados y no se repetían. Siempre alternaban las fallas. La Main CPU cambiaba de fallas, a veces prendía el robot sin problemas, luego se colgaba el teach pandat, cambiamos teach pandat, cable , no dejaba entrar en Boot Mode, a veces si pero se congelaba el teach, etc etc.
En fin, la unidad de potencia, no indicaba errores. Pero parece que algún capacitor o componente defectuoso, generaba mala tensión de alimentación para la CPU y hacia estos comportamientos inesperados.
Cambiamos la unidad de potencia y logro andar todo correctamente.
Mas adelante mediremos la fuente de alimentación que falla, con un osciloscopio, e intentaremos cambiar algunos componentes básicos electrónicos, si encontramos la falla en especifico del componente, seguiremos el hilo.
Suerte y abrazos