Servo recommendations

Hi I am new to this forum.
I am building a cnc router and need some help. I wanna use servo motors on this machine. I was thinking to go with the gecko drive g-320x drives. My machine is a gantry type 5ft by 5 ft X weighs 60 lbs y I would say 120 lbs. I have 2505 screws on it . I am running 2 motors on my y axis I would have to have them slaved. I wanna be able to cut wood plastic maybe some 2d aluminum cutting (thin stuff) I was thinking to use 1200 oz servo motors directly driving the screw. My question is what servos would work here would 1200 oz be underpowered. I also need some recommendations to what control board would work good with these drives using mach3. Any help would be appreciated.

Thanks.

Not many people use brushed servos these days.
Most are moving to brushless servos, like Clearpaths and DMM AC servos.
1200oz continuous is far more power than you need.

My two cents:
I built a similar router ten years ago and used a dedicated control (galil) with Parker brushless servos. It used a plug-in for Mach 3 to communicate with the galil. It worked, with occasional bugs and glitches.
Late last year I converted to dmm tech 400w servos and amps ( dyn2). I replaced the control with uccnc and the uc300eth with ub1 Bob. All I can say is it has never ran so smooth and it is yet to have a hiccup. I agree with Gary nema 34 1200w servos might be more than needed. My 400w have plowed through anything I have cut. I am so satisfied, I just purchased another set of dmm for my new bed mill. Nema 34 1kw this time.


Sent from my Pixel 2 using Tapatalk

Thank you

Are the dmm servos a closed loop system and are they easy to toon. How much does a 400 w system go for? How easy is it to set up ? Are the dmm servos better than clear path I heard they are not closed loop.

All Servos are closed loop. When used with Step/Di signals, they close the loop at the drive.

DMM has two types, the DYN4 drives run directly off AC power, and the DYN2 run from a DC power supply. The DYN4 are a bit more expensive, but are capable of higher rpm.

A 3 axis DYN2 kit is about $1500. https://store.dmm-tech.com/products/...c-servo-system

A single DYN4 drive with motor is about $400, plus cables, or close to $500 each.


DMM are not necessarily better or worse than Clearpath, but they are different. Clearpath are designed as drop in replacements for stepper motors, and tend to have lower rpm ranges. But they have a LOT of different models to choose from ,where as DMM just has the two,

Sorry, can't answer the tuning question.

Quote:

---

Originally Posted by Sam1981

Thank you

Are the dmm servos a closed loop system and are they easy to toon. How much does a 400 w system go for? How easy is it to set up ? Are the dmm servos better than clear path I heard they are not closed loop.

---

Both the DMM and ClearPath systems are easy to tune. In either case you need to buy the communication cable for the system, and use the provided software.

Quote:

---

Originally Posted by Sam1981

Thank you

Are the dmm servos a closed loop system and are they easy to toon. How much does a 400 w system go for? How easy is it to set up ? Are the dmm servos better than clear path I heard they are not closed loop.

---

You can use the Close-Loop Stepper Motor

https://www.automationtechnologiesin...ue-1128-oz-in/

https://www.automationtechnologiesin...nic-clearpath/

Quote:

---

Originally Posted by Sam1981

Thank you

Are the dmm servos a closed loop system and are they easy to toon. How much does a 400 w system go for? How easy is it to set up ? Are the dmm servos better than clear path I heard they are not closed loop.

---

All servos run as closed loop a real intelligent servo system like DMM and others close the loop in the servo drive which also can be closed in the control as well, there is no comparison between the Dmm and ClearPath servos Dmm being a much better buy and better performance

Dmm basically no tuning is required, but they have auto tuning if you need it, so it's very hard to get it wrong they have active Adaptive Tuning on the fly, meaning they automatically tune to the load of the machine, the high count Encoder is what is missing in most other low cost servos, this is a must for smooth operation of any servo system the higher the Encoder count per rev the better your machined parts will be

Hi,

I am an Applications Engineer at Teknic and came across this post. I understand that the wide range of options may initially seem like a lot. We provide this large number of options to give customers the ability to optimize their motor for their specific mechanics and to minimize cost when selecting a fully closed loop ClearPath servo system.

If you have all of the mechanical specs and motion goals, Teknic will run a machine simulation to help you select the appropriate servo size. Feel free to contact us at [email protected] or call 585-784-7454.

-Ian R, Teknic Servo Systems Engineer

About the servo , there are some options:
1. Japanese YASKAWA servo motor,
2. Chinese brand Leadshine servo motor,
3. Chinese Leadshine easy servo motor.

It depends on your jobs




UnionTech Machinery