milltronics partner 3 centurian 6 capacitor

[bestrada11]

i recently aquired a milltronics partner 3 mill with a centurian 6 controller that was owned by a usda cotton research lab. it was not working when i got it but i was informed that it had worked up untill they had attempted to plug into the power source and there was a cobwebb aluminum shaving birds nest that was webbed in between the plug and the wall. there was a spark and a breaker pop and the machine never worked again they did not attempt to repair but suggested that the large capacitor inside the controller box would be the problem. any ideas or suggestions

[amontgom]

i am in the middle of a complete retrofit of the same model..
the one i am working on had the backup battery explode killing everything... and corroding everything else...

it turns out that my kit takes it to an 8.5 NM stepper based open loop system running mach3 for about 5K..

my mill currently is working all axis and running confidence tests and is doing very well...

it is possible that you may can get away with less..
drop a line and i can point you to some good places to start..

but i still have the guts of mine such as they are... let me know what you want...

[sportybob]

The DC buss capacitors do not come into play untill the reset switch is pressed. reset allows a contactor to close suppling 110VAC to the DC buss which is used by the servo drive cards to run the DC axis motors.

If they shorted the power at the wall, it seems that you would affect the incomming power to the machine more then the secondary DC buss.
check the 3 incomming fuses. check the fuse on the 220 to 110 transformer.
the transformer gets power from the L1 and L3 fuses.
check for voltage on thebottom side of the fuses, 220 across L1 to L3, something less across L1 to L2 or L3 to L2.
if OK the check for 110 out of the 220 to 110 transformer, bottom side of the tramsformers 2 wires should read ~110vac. if not check the fuse mounted on the transformer.
let me know what you get

sportybob