Stepper motors should hold position when error.
- LeonDolnicar
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29 Sep 2025 19:26 #335565
by LeonDolnicar
Stepper motors should hold position when error. was created by LeonDolnicar
I am running a 3 axis CNC mill with stepper motors, through a 7i76eu card running linux CNC. Currently when one of the motor drivers gets a fault, the motor lose all power. This is problematic for the Z axis, which uses a stepper motor with a brake. When its driver gets a fault the brake is engaged, but there is a delay, in the meantime the z axis is in free fall for about 10cm. Is it possible to program the stepper drivers in such a way that when they get a fault they stop the motors and hold the position.
Thank you for all the answer and suggestions in advance.
Thank you for all the answer and suggestions in advance.
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- tommylight
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29 Sep 2025 21:51 #335573
by tommylight
Replied by tommylight on topic Stepper motors should hold position when error.
How does LinuxCNC/Mesa know there was a fault?
If drives have fault out, there might be something we can do, but for now i am out of commission as i spent the whole day chasing python scripts to output gcode for 3 and 4 axis machines from some really obtuse files some proprietary software outputs.
If drives have fault out, there might be something we can do, but for now i am out of commission as i spent the whole day chasing python scripts to output gcode for 3 and 4 axis machines from some really obtuse files some proprietary software outputs.
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