(NEWBIE) How to use an (Fanuc) AC Spindle servo motor for an DIY CNC router

Thanks for your reply!

Okay, then i am again at an point where i dont know what to do/what i need.
If the RS422 interface is not viable, which would be then viable ?
I have found that manual: dl.dropboxusercontent.com/u/19663270/Lic...struction%20Book.pdf
Couldnt find anything about "velocity" and also not +/-10V velocity(speed) command, but "Analog quantity
input port: Analog quantity input signal, input range 0～10V.
I found other servo motors which has this info: 0 ~ ±10 VDC, but that should be the same like 0～10V.

Lets maybe forget that with the "real servo motors and drives".
The cheaper option and maybe less complicated will be the Easy Servo Stepper motors and Drives which uses Step/Dir.
I have read quiet good opinions about the Easy servo system and was looking for the boards/cards i should use for them.
So, i have found here in this forum an Thread Easy Servo with Pico universal stepper controller ( where the user "Andypugh" wrote to use the Pico universal stepper controller with the "Parallel port card". In my case, if i want to use the Servo Spindle motor, i would also need the "Spindle DAC card". Is it right and are that all cards i need?

An question to the Easy Servo system wiring. Here an picture: Easy Servo Wiring :
The R232 wire (would need usb adapter) is just for configuration through Easy Drive software and has to be used only ones, correct?

What do you think, is it an good alternative to the real servo motors?

Thanks in advance!

BR,
Denis

denhen89 wrote: For me everything is conflicting a bit.. Also, because on the Mesa store site is an Category named "LinuxCNC supported boards" and there is an Sub-Category named "Motion Control Cards"

Those are actually all motor drives (stepper motor and servo motor). They are the layer between the interface card and the motors themselves.
My lathe and mill, for example, use Mesa 8i20 drivers for the servo motors.

2. Would this Servos for my XYZ Axis work:[url=https://www.aliexpress.com/item/1KW-Servo-Motor-Sets-4NM-2500rolls-for-Spraying-Equipment/32521049544.html?

Page 12 shows +/- 10V on terminals 18 and 19. That would work with a 7i77.

i am a bit wondering how long i took you guys to get that knowledge. Just cant believe someone without any experience with CNC would know all that stuff. Too many variaties of setups and components..

I have been learning about CNC for about 7 tears, since I first installed LinuxCNC. I have actually learned most of what I know from _answering_ questions on here.

denhen89 wrote: The cheaper option and maybe less complicated will be the Easy Servo Stepper motors and Drives which uses Step/Dir.
I have read quiet good opinions about the Easy servo system and was looking for the boards/cards i should use for them.
So, i have found here in this forum an Thread Easy Servo with Pico universal stepper controller ( where the user "Andypugh" wrote to use the Pico universal stepper controller with the "Parallel port card". In my case, if i want to use the Servo Spindle motor, i would also need the "Spindle DAC card". Is it right and are that all cards i need?

That should work. As will the Mesa 7i76 / 6i25 plug-and-go-kit.

(You can even use a 7i76 and a 7i77 on one 6i25 at the same time.)

Further info. Looking more carefully at the Lichuan manual, of you look on page 16, second picture, and copy the text hiding under the picture to paste somewhere else, it says "-10V~10V"

Also, the Chinese translates to "Servo driver"
translate.google.com/#zh-CN/en/伺服驱动器
(Might be useful in other places)

Thanks andy for your quick reply!

Those are actually all motor drives (stepper motor and servo motor). They are the layer between the interface card and the motors themselves.

Okay, was just wondering why they are named Motion control and the other different.

Page 12 shows +/- 10V on terminals 18 and 19. That would work with a 7i77.

Which Page do you mean, because the link is for the Aliexpress product page.

I have been learning about CNC for about 7 tears, since I first installed LinuxCNC. I have actually learned most of what I know from _answering_ questions on here.

Wow, okay thats a long time! Good that this forum has some experienced poeple who also help

That should work. As will the Mesa 7i76 / 6i25 plug-and-go-kit.
(You can even use a 7i76 and a 7i77 on one 6i25 at the same time.)

PERFECT Will add that to my list and later choose. Just dont know which is "better", but i am pretty sure they both have some advantages and disadvantages.

Would you recommend to go with Easy servo system ? When i read the differences between closed loop steppers like Easy servo and real servo motors, then i think the only big difference is the constant torque on the servo motors.

Also i just dont know how much Nm i would need. I have tryed some calculators, but i dont trust them.
What i can say now is that the Gantry will be quiet heavy, for sure about 300kg. At least i should go for that weight when not even more. I want an very universal machine, mostly for steel and aluminium, but would also like to cut sheet metal plates and maybe MDF which are mostly available in 2500mm x 1250mm, so the table should be about 2600mm x 1350mm. I first thought to build an Fixed gantry, but then i would need an second router for sheet metal and mdf (plasma + high speed mill), because i dont want to use +5000mm for the Y-axis .
Would be 10Nm enough or is it way to less ?

That question can maybe not been answered, what is totally fine for me. I will more likely go for oversized servo steppers then to to weak ones.

You guys helped me already alot, thanks!

BR,
Denis

Further info. Looking more carefully at the Lichuan manual, of you look on page 16, second picture, and copy the text hiding under the picture to paste somewhere else, it says "-10V~10V"

Also, the Chinese translates to "Servo driver"
translate.google.com/#zh-CN/en/伺服驱动器
(Might be useful in other places)

You are right, have found that. But the reason i thought to go for the Easy servo is also because i found some thread here in forum where someone had exactly that problem with the 0-10V / -10 ~ 10V.. Somehow i cant find that in my history any more, but he couldnt give them any more back and he wasnt very happy with that purchase. Have a bit fear that i will have some big problems later...