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@Pete, how did you diagnose the encoder?

@slowtwitch: "Thus being an AC servo, I couldn't just swap out the encoder.
I replaced the the problem servo with a new one."

- Hi, Pete. That is interesting. That may tell that...

Hi, Paul
The owner of the machine said he would be happy to find
at least any zero. Mostly, when a zero is finally found, sometimes
after hours of trying, it is correct.

The reason for...

Hello Fadal experts,

I am forwarding this question about Fadal 6030, yr.-99
This machine works generally quite well except the cold start
procedure. Its owner described the symptons like this:...

@Al_The_Man. Yes, the idea behind is not to "confuse" Fanuc, or any other CNC-controller.
Rather keep this limited and clearly defined retrofit to tool turret only. And, at least
for the beginning,...

For information to anybody interested....

I have started a thread about generic tool turret servo system
in forum "Granite Devices". Title is "Replacing turret servo system"....

@Xerxes, about hard stop detection... it seems not only solve
positioning reference problem but it is present already!.
The turret lock...

I had yet another discussion with the owner of that...

I would appreciate a practical viewpoint in a problem
involved in turret servo repair of Femco HL15
CNC lathe.
Original Mitsubishi Melservo MR-J2-A-S24 stopped
working obviously because of...