Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: kolias on January 06, 2014, 08:24:47 PM

Title: PWM Base Frequency
Post by: kolias on January 06, 2014, 08:24:47 PM

On Figure 5-7, page 5-11 of Mach3 manual, under Motor Control, what numbers normally do you put for "PWM Base Frequency" and "Minimum PWM"?

I can't find this info anywhere in the manual

Title: Re: PWM Base Frequency
Post by: Hood on January 07, 2014, 02:04:37 PM

I think these values would depend on the hardware you are using but then again I have never used PWM so take that with a pinch of salt :)
Hood

Title: Re: PWM Base Frequency
Post by: HimyKabibble on January 07, 2014, 02:47:19 PM

PWM frequency is typically 50Hz.  Little to gain by going faster, and it can reduce resolution, depending on your kernel speed.

Regards,
Ray L.

Title: Re: PWM Base Frequency
Post by: kolias on January 07, 2014, 03:11:26 PM

I will use 50Hz, thank you both