Hi Guys, I am relatively new to servo area. I have purchased close loop stepper system for my mill cnc conversion project, and it looks like, while being twice cheaper, I will be missing out on a lot of features. Looks like encoder on CL stepper system will not actually help me with positioning at all but can only be used as a failsafe, which was not my goal at all.
So, I went to alibaba to see what I can get instead of this system which cost me $80*3 + $80 for DC supply = $320 total, that is for 3Nm motor system.
Now back to alibaba offers, I could get a servo there with actually more torque, such as 220V AC servo (my mill is 220V always) for $120ish, which is just little more compared to my current buy, and dont need a 48V power supply on it too.
However I dont really know what exactly the difference would be between AC and DC servo system. If anyone could shed some light for me, would appreciate. I did googling, but also wanted to hear "insiders" opinions from home CNC machine perspective.
Thanks!