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Messages - xusmcx

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I just ran across this post. I am in the process of building a new cnc with the PMDX424 board and Mach4 software. My thought was the same as yours to run with a fanless pc. I had installed a ITX motherboard with a quad core integrated atom cpu. I have been battling this setup for weeks and getting underruns in Mach4. I was thinking this was a issue with the OS as I was running a Win10 OS and have installed the OS several times. I finally swapped out the pc to another pc that was a ITX motherboard with a AMD 6 core cpu and i am not seeing the underrun issues anymore. Hope this helps.   

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Thank you 12Strings!!! I had to setup the spindle speed table and then I was able to get the spindle to run.

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I have built other cnc system but new to Mach4 cnc.

I cannot get the spindle to run with the current configuration. Was checking if anyone has this VFD it is a Chinese YL600/YL620-A. I can get the spindle to turn when configured from the front panel but when configured with the PDMX-407 I can't get it to spin.

I have the wiring as:

PDMX-407      VFD
RUN     >     REV
COM     >     GND
AGND    >     XGND (digital ground)
AOUT    >     VI1
AREF    >     10V

(Picture 4.jpg has the pinouts on the VFD from the manual)

In the VFD I set P00.01 to 1 and set P07.08 to 3. These values look the same as other Chinese VFD's like this.

In Mach 4 in the plugin config under spindle I enabled PWM and the PMDX-407.

I tried running a s500 but I can't get the spindle to run. Am I missing something here? I have included info from the manual and other pictures of the 407 and the VFD.

Thank you for any help.
 


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