Schaublin 125-CNC retrofit.

I also have Lichuan A4. I am using step / dir, as I prefer to stay in the digital domain, although they seem to support +/-10V.

The Lichuan B2 appears to support analogue input, too. Would be surprising if they didn't. Are you sure they don't?
servo.xlichuan.com/ProductsStd_207.html

Yes I am absolutely sure.

Analog is usually +/-10V but B2 is 0-10 + switch to change direction = not fast enough.

That's annoying. I'm glad I didn't go the analogue route. It has to be said, the Lichuans are thin on features compared to the likes of Yaskawa etc and the setup "software" is little more than a parameter table you can configure offline and upload.

As modern drives and controllers are both inherently digital, what is the benefit of going analogue +/-10V? The signals are being converted from digital to analogue at the controller, then back to digital at the servo drives, with the opportunity for noise, delays (filters etc) and offsets along the way.

The guys answered my similar question on Analog v Step/Dir a few pages back.
forum.linuxcnc.org/26-turning/41498-scha...ofit?start=40#200693

The cutting oil used has hardened to a varnish, and glues the ways down pretty well. I am having to break it down further than I hoped, but am very happy with yhat I am finding so far.


Mark

Pulled off the saddle this week.

Such a beautiful machine! After goofing around with one of those chinese mini lathes one can really appreciate the quality of this Schaublin.

It really is nicely made. Especially the castings. I think I might do some special coverage of Schaublin castings.

contraves(csr) is still alive, this was one of germanys top servo controller and motors company in the 80/90.
The old workmen founded a new company.

www.contraves-drives.com/D/index.php

maybe they can give you informations about the motors

Here is this weeks update.
Mark