Okuma LB15 SDU alarm Fanuc "over current" status AMPs in the red on panel
G'day Guys,
Ive been working on getting this LB15 lathe running after 10 years! After replacing the X axis drive, CRP board, and spindle drive its now running.
However at around 1000 rpm and under no load I keep getting an SDU alarm and on the Fanuc SDU it show LED indicating an over current.
This is confirmed by the AMP meter on the panel showing a very high current, in the red. Spindle moved by hand and feel free and normal.
I may try installing back the original SDU as i thinks its just a fuse on that.
Any ideas why its drawing so much current when running under no cutting loads?