Wiring VFD to MESA 7i96s

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05 Apr 2024 09:56 #297635 by Xinokas
Good morning, I have a Mesa 7i96s board and a VFD with the following pinout. I would like to know what the best option is for connecting one to the other.
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05 Apr 2024 12:52 #297643 by PCW
Replied by PCW on topic Wiring VFD to MESA 7i96s
VFD           7I96S
10V           TB2.24 SPINDLE+
AI1            TB2.23 SPINDLE OUT
ACOM        TB2.22  SPINDLE-

DCOM        TB3.24  OUT5B
REVERSE   TB2.23  OUT5A
DCOM        TB3.22  OUT4A
FORWARD  TB3.21  OUT4A

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05 Apr 2024 13:38 #297645 by Xinokas
Replied by Xinokas on topic Wiring VFD to MESA 7i96s
"Thank you very much for the prompt response. I've already connected everything, but I can't get the spindle to run on LinuxCNC. Can you help me with the HAL code?"

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05 Apr 2024 14:02 #297646 by PCW
Replied by PCW on topic Wiring VFD to MESA 7i96s
Can you post your current hal/ini files?
 

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05 Apr 2024 14:19 #297647 by Xinokas
Replied by Xinokas on topic Wiring VFD to MESA 7i96s
Sure, here they are. 
Thanks
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05 Apr 2024 15:38 - 05 Apr 2024 17:03 #297650 by PCW
Replied by PCW on topic Wiring VFD to MESA 7i96s
Looks like you did not setup any spindle control in pncconf.
You need to setup both the spindle PWM and OUT4 and OUT5.

Something like:

 

and:

 
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Last edit: 05 Apr 2024 17:03 by PCW.

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13 Apr 2024 23:53 #298210 by Xinokas
Replied by Xinokas on topic Wiring VFD to MESA 7i96s
I need to work analogic 0-10V.
I tried to config it, i can fwd and rev the spindle, but i cant control the speed.
What am i doing wrong?
Maybe some lines missing to convert the pwm to analog?

my hal file is attached

thanks
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14 Apr 2024 01:41 #298212 by PCW
Replied by PCW on topic Wiring VFD to MESA 7i96s
The hal file looks OK, but the ini file is needed also for a full check

Do you have 10V when measured from 7I96S pin 22 to 24?

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14 Apr 2024 15:01 - 14 Apr 2024 15:33 #298230 by Xinokas
Replied by Xinokas on topic Wiring VFD to MESA 7i96s
Yes i have 10V.

Here is my INI file.

Do i need a scale?


Edit: Make sense use this?

loadrt scale count=1
addf scale.0 servo-thread
setp scale.0.gain 0.01  # Adjust this value based on your maximum RPM and VFD input requirements
net spindle-speed-scale motion.spindle-speed-out => scale.0.in
net spindle-speed-DAC scale.0.out => hm2_7i96.0.analogout0
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Last edit: 14 Apr 2024 15:33 by Xinokas.

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14 Apr 2024 17:26 #298237 by PCW
Replied by PCW on topic Wiring VFD to MESA 7i96s
The existing hal and ini files look correct (nothing else is needed)

The spindle is set for 2000 RPM full scale

If you enable the spindle and set the spindle speed to 1000 RPM
you should get ~+5V on P2 pin 23 (relative to P2 pin 22)

(you can do this in MDI mode with "M3 S1000")

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