Hi all,

So I made a cnc lathe (which I will introduce in a different thread) with a 750w Yaskawa AC servo and SGDA-08AP controller driving the spindle. After moving house, it sat unused for a few months. The other day, when setting the whole thing up again, the servo started making an awful grinding noise when turning the power on and throwing alarm A.70 (overload), even before running it. I'm scratching my head and wondering what the problem might be? A config problem, or something more serious?

Any help will be greatly appreciated - including a brief video and pics showing the issue.

https://youtu.be/DoyAoMtU0Kw

Attachment 459360

Attachment 459362

Thanks everyone!

Fit0