Powered the vfd today and tried to start it not with panel button but linking the terminals, and it works everyting is ok. Was really surprised how silent the spindle is.

Now the question is how mach3 is controling the speed? In the manual is written that there are 7 methods to change the frequency. (Parameter 3)


Obviously from mach you can get 0v or 5v so how it will tell on what speed to run?

Another question. What is segmented speed? In manual it says you can have 7 segmented speeds. Is it that you need to enter into the segmented speed parameter the frequency you want starting from smaller one and with each segment increasing it, and then mach sends 5v pulses to adjust speed accordingly or i am wrong in here? How does that work?



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