Strategie bei Hurco BMC20 refit / Interfacing the Drives to MESA

That looks pretty good. That would be fine for software stepping too.

HI folks,

I am currently about to decide which Servos I will go for, in generall NEMA51 types will fit pretty good not direct bolt on but easy to adapt.

I made inquirys about Lichuan and Leadshine not Delta because there is no 1kW NEMA51 type which would fit

So I hope you can help me with the decission, I personally see that the +/-10V Interface plus Encoder Feedback seems to be very common BUT some of you use ETHERCAT and I personally think this is a very smart solution only Leadshine is able to provide ETHERCAT as an option for there servo drivers BUT I found nobody using these servo drives through Ethercat any doubts???

I appriciate all your Input a LOT!

Thank You!

NEMA is just one of many standards for motor sizes. Maybe the existing servos are metric?
What are the shaft and spigot diameters?

Why not retain the existing servo motors?

You could keep the same drives too, but that might be more difficult.

Are the servos 3-phase brushless motors? There a a number of ways to drive those with LinuxCNC, STMBL is possibly an option. github.com/rene-dev/stmbl/blob/master/do...tting%20Started.adoc
(Fanuc puslecoder support was added last week, or the week before)

From your point of view one advantage is likely to be that the development team are mainly in Germany.

Ehm Yes, one Fanuc died a few years ago and was replaced 4k€ one is original one also older...
I personally think it's good to get rid of them!
The look kind of abused! And the full discrete Servo Driver is also not something I trust in.

The Servos have 130mm Frame Size the Exisiting ones and also the NEMA51 ones only the round part which sits in the hole of the mounting braket is a bit different that's easy to change and the alignment doesn't matter because the shaft is equipped with a belt pully and I only have to order new suitable pulleys and so I'm fine...

I really prefer to exchange the Servos and drives!
The question is if it's a good idea to go for Ethercat and if a noob will get it running with a Servo drive nobody before used

I think the possibility to build even the servo AMPs (STMBL) from scratch is interesting but won't be my way for this retrofit!

Thanks for your Input

You could get some DMM servo drives and motors, or this
www.aliexpress.com/item/2-4nm-Servo-driv...a-a7dfdd301dd5&tpp=1

They sure do look tempting for that price even if they do half of what is advertised .
I got the ARGON drives from GraniteDevices fro the Hurco i retrofitted.

Hello. I'm not quite on the topic. Your photos of the BMC30 schemes helped me a lot. I have such a milling machine, and I want to redo it on another Cnc. But I don't have connection diagrams. You can ask to take a photo of the circuits with PLC (inpupt/output )connectors and relays. I can not develop what and where to connect. Thanks in advance.ivan@online.lv Best Regards.