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Author Topic: Pulse Width Modulation  (Read 1928 times)

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Pulse Width Modulation
« on: August 29, 2011, 10:07:18 PM »
I recently installed a PWM board to control my spindle speed. I keep getting the following error: PWM bumped to minimum setting. I can't find this error in any of the docs. What is the problem? Thanks for your help.
Re: Pulse Width Modulation
« Reply #1 on: August 29, 2011, 10:48:02 PM »
Hi John,

This error means that you have set the minimum PWM value to something other than 0%. So Mach3 is telling you that you are asking it to set the PWM to a value that is less that the minimum value to it is bumping it up to the minimum PWM value.

My guess is that if you look at the Ports and pins config tab for the spindle (attached image)  you will see that the minimum  PWM % is no zero.


Homann Designs
email: peter at homanndesigns.com
Re: Pulse Width Modulation
« Reply #2 on: August 30, 2011, 07:42:38 AM »
Thanks Peter. I will take a look at this setting.