Strange behavior Mesa 7i76e - FU YL-620A Speedvoltage

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09 Oct 2025 14:12 - 09 Oct 2025 14:14 #336148 by DerKlotz
Hello,I can't get my spindle with frequency converter YL-620A and Mesa7i76e to rotate. Homing is not working at the moment because the mechanical and electrical components have not yet been connected.
Pin 1 Spindle- to GND
Pin 2 Spindle out to VI1
Pin 3 Spindle+ to 10V
Pin 5 Spindle Ena- to XGND
Pin 6 Spindle Ena+ to FWD
Pin 7 Spindle Dir- to XGND
Pin 8 Spindle Dir+ to REV
In Linuxcnc, I can press the forward, reverse, and stop buttons, and this is also displayed correctly on the frequency converter. When I press the forward button, I measure a fluctuating voltage between approximately 0.65V and 0.9V between pin 2 and pin 1. There is 10V between pin 3 and pin 1. Without starting Linuxcnc, I measure 0V between pin 2 and pin 1. I have already increased the parameter P03.06 and decreased P03.07. Unfortunately, there has been no change.
Help
Last edit: 09 Oct 2025 14:14 by DerKlotz.

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09 Oct 2025 14:47 #336150 by PCW
Can you post your hal and ini files?

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09 Oct 2025 14:51 #336151 by DerKlotz
Hope these are the right files. Iḿ a newbie
 
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09 Oct 2025 15:29 #336152 by PCW
That looks OK

Does the spindle speed control work at all. that is,
does MDI command M3 S12000 give you about 12000 RPM
and ~5V output?

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09 Oct 2025 15:32 #336153 by DerKlotz
At the moment i´m not able to do a homing in Linuxcnc. If i try a MDI command it says home all axes...

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09 Oct 2025 15:49 #336154 by PCW
You can temporarily disable homing by setting

NO_FORCE_HOMING = 1
 in all joint sections of the.ini file
 
The following user(s) said Thank You: DerKlotz

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09 Oct 2025 16:00 #336155 by DerKlotz
I did it at all Joints like this

[JOINT_0]
NO_FORCE_HOMING = 1

and restarted Linuxcnc but i still get the error not "homed"

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09 Oct 2025 16:05 #336156 by PCW
Try setting the HOME_SEARCH_VEL and HOME_LATCH_VEL to 0

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09 Oct 2025 16:10 - 09 Oct 2025 16:14 #336157 by DerKlotz
I found it at pncconf and unchecked "Require homing before MDI/Running". Now it works.
Thanks a lot!
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Last edit: 09 Oct 2025 16:14 by DerKlotz.

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