Stepper motors for a EtherCat system

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24 Apr 2025 16:27 #327001 by billru
Stepper motors for a EtherCat system was created by billru
Hello everyone, 
This my first post, I am a DIY hobbyist I am trying to learn what hardware is being used for a diy CNC mills. I ran across different system and setups but I have been unable to get a clear understanding on stepper motors being used in a diy home type CNC mill for a EtherCat setup.I have poked around and searched youtube but still have not got a clear knowledge, my question is can a Nema 23 closed loop stepper motors with encoder be used in a EtherCat setup or dose the stepper have to be EtherCat designated style motor.
I have some 23HS30-5004D-E1000 motors I was going to try and play with and see if I can learn a Ethercat system 

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24 Apr 2025 17:25 #327003 by PCW
Replied by PCW on topic Stepper motors for a EtherCat system
The motor type doesn't matter, it just needs to be supported by the drive.
The drive needs to be EtherCat compatible or you will need an EtherCat
-> step/dir interface.

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24 Apr 2025 21:12 #327016 by rodw
Replied by rodw on topic Stepper motors for a EtherCat system
I have found it is better to use a matched pair motor/drive combo
I have had good luck with Rtelligent ECT drives matched to their closed loop steppers.
I could not get their ECT86 (NEMA34) drives working with NEMA23/24 motors.

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24 Apr 2025 21:57 #327018 by billru
Replied by billru on topic Stepper motors for a EtherCat system
Thank you for the feedback

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25 Apr 2025 07:32 #327034 by Hakan
Replied by Hakan on topic Stepper motors for a EtherCat system
Have a look at the Rtelligent ECT42 www.rtelligentglobal.com/fieldbus-closed...-ect-series-product/
The motor needs to be a standard stepper motor with two coils.
This drive expects a very common quadrature signal A and B.
The encoder interface needs to be checked so they matches.

In general terms that's how one does it - use a drive that connects to EtherCAT.
Not very common, although the solution exists, to use a separate EtherCAT device
to generate step motor pulses and take encoder input and connect that to a stepper motor drive.
When you go with EtherCAT, use EtherCAT stepper motor drives.

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