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Stepper.etch to control the position Brushless DC motors

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12 Oct 2019 17:45 #147745 by Moreira
Hello,

I'm new to Linux CNC and I would like to control the position of a brushless DC motor + incremental encoder with the Maxon ESCON 50/5.

This driver requires the following signals: PWM and Direction, instead of a step and direction (stepper.etch).


I've read that I can use the pwm.gen ( linuxcnc.org/docs/html/config/stepper.html ) to generate the PWM signal.

Does anyone know if I can use the stepper.etch configurations to do this?

Also there is a BLDC component. Is this better?

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12 Oct 2019 18:21 #147746 by tommylight
Welcome,
The name is etch-servo and yes you can use it for that, but it looks like the drive does work also with other types of control signals, +-10V, +-4V, and digital inputs , so most probably it can work with step/dir signals.
Here is the link to the pdf
www.maxongroup.us/medias/sys_master/8810873815070.pdf

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