Servo Driver Plasma Retrofit

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27 Jul 2025 17:02 #332432 by tommylight
Replied by tommylight on topic Servo Driver Plasma Retrofit

Is it possible to use stall force tolerance for z axis home and detecting the sheet metal in qtplasmac? 

Yes for a DC motor, no (at least not easy at all) for steppers.
For a DC motor you would need a reed switch and wind some 5-10 times one of the motor cables around it (not both), wire the reed switch to any input and set it in hal as limit switch or probe.
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27 Jul 2025 23:41 - 27 Jul 2025 23:42 #332450 by kn612
Replied by kn612 on topic Servo Driver Plasma Retrofit
 

File Attachment:

File Name: HornetPlasma.hal
File Size:10 KB
 

File Attachment:

File Name: HornetPlasma.ini
File Size:4 KB


In the hypertherm microedge software that currently controls the table has encoder polarity and dac polarity set to negative for one of the y axis and x axis.  Would I need to change the wiring I have going to the 7i97t to reflect that and would that be causing some of my issues?
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Last edit: 27 Jul 2025 23:42 by kn612.

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28 Jul 2025 00:27 #332452 by PCW
Replied by PCW on topic Servo Driver Plasma Retrofit
There is a basic setup error in the hal file: all PWMgens must be set to use offset mode
for the 7I97/7I97T. Here is an example from the basic7I97 configuration:


   

File Attachment:

File Name: basic7i97.hal
File Size:11 KB
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