AC Servo

Hello everyone,

Here is my project. I bought a small metal lathe that I would like to convert to a cnc.
For the X and Z axis I chose nema 23 with ball screws. Until then, no worries.
I also took a 750w Servo AC (fr.aliexpress.com/item/90ST-M02430-220-V...1.0.0.27426c37lEOIRs) to replace the original brushed motor. But that's where I dry for the wiring and the setting of this servo. I have two PCI ports on my PC. And a simple interfacing card (photo). So I scoured the web up and down (we find things but it's in English and sometimes rather technical) I understood that we could order the servo with STEP / DIR. But how to do with the encoder?
I am really lost: /

If I had the means I would take Mesa cards directly but it's off budget for the moment.

Thank you (sorry for bad english :/ google translation)

Please READ the SPECIFICATIONS very carefully so you really get what you want!

The specifications of the driver? I read but it's a lot of information and I can not move forward: /

Yes the driver.
Read following
forum.linuxcnc.org/27-driver-boards/3011...d-of-10v-out?start=0

We ordered with ananlog input ±10VDC
Sales person says YES YES IT WORKS
It did not!!!

So I say again READ SPECS !!

Thank you for your reply. Yes I saw that my driver accepts + -10v. But the post you shared with me uses a Mesa card and I do not have one. I have this card (www.usinages.com/data/attachments/187/18...dedff43f8636891b.jpg) or the one (www.gbeshop.com/InfoBase/SAVEBASE/PKG/00...7665pan22_franch.jpg)

Is it absolutely necessary a Mesa card to use this damn servo: /?

clmnt wrote:

Thank you for your reply. Yes I saw that my driver accepts + -10v. But the post you shared with me uses a Mesa card and I do not have one. I have this card (www.usinages.com/data/attachments/187/18...dedff43f8636891b.jpg) or the one (www.gbeshop.com/InfoBase/SAVEBASE/PKG/00...7665pan22_franch.jpg)

Is it absolutely necessary a Mesa card to use this damn servo: /?

No you dont have to use Mesa cards. If you want no trouble then I woulod choose the mesa cards.

I have used these servo/driver combinations. They can do either +-10 velocity, or step and direction. You have many options to set in the driver. Read the manual carefully and set the appropriate parameters in the driver.

What brushed motor are you wanting to replace with this servo?
Was it a brushed servo motor or a brushed spindle drive motor?
A servo might not be the best choice for replacing a spindle drive.
What were the specs of the motor you are replacing (how fast, how powerful)?

If your new servo drive can accept step/dir inputs then you should be able to control it using just the parallel port relatively easily. But you may have difficulty using the encoder feedback. The pulses will likely be too fast to be read reliably at any useful speeds, but that may not matter much depending on your application.

I would probably buy a mesa card when I have a little more money. Living in France the price with customs fees it quickly becomes expensive

For a lathe the most important is the speed. If I understand well with a parallel port the best is to use Step / dir?

Thank you

The motor I want to replace is this one (attachment) 500w it seems to me and 3000 rpm maximum. My servo is a 750w 3000rpm too. I chose an AC servo for its size. It's a little ride so not much space for an motor.

Apparently no problem to drive it by step / dir. As is the speed that counts for a pin. I need only one index, right?

Thank you
Sorry in advance if I do not understand everything at first but I have tinnitus quite noisy: / but I must continue my projects anyway ..

I can not see 0-10v with the board you showed. You need that to command the speed.

The other signals for 2 stepper and run/fwd for your servo can be done with such simple board.