Hello,
I have read a lot here before posting this thread but the threads I found did not help completely.
I have a Mori Seiki SL-3 with fanuc 5T which was working just fine and all of a sudden started to blow 2 out of the three 75 amp fast blowing fuses. Since those fuses are really expensive someone adviced me of using regular ribbon fuses just for the purpose of testing. First I used 60 amp ribbon fuses and I ended up with 2 scrs blowed up just as Al the man said I would happen in one of the threads I read. Then and after getting new scrs I tried 30 amp ribbon fuses and it works for a while, maybe a day or two( sometimes less than that and blows the fuses again. The I decided to disconnect the DC motor and install 50 amps fast fuses and the result is that it blows the within the hour having the motor disconnected.
I am running out of ideas and any help would be really appreciated.
The spindle drive model is A20B-0008-037 and it blowsthe second and third fuses (connected to S and T lines)
Thanks
jolulank