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Old 01-23-2017, 12:32 PM   #3019 (permalink)
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Originally Posted by MPaulHolmes View Post
The quadrature encoder interface requires A and B. I had done a virtual high resolution encoder using a single pulse from a tesla using the change notification pin, but Tesla's resolution is only like 36 ticks I think. The problem with 60 might be the high frequency that the change notification interrupt gets called as the motor frequency gets high. I'll have to look at that and see if it's practical.
I am speaking of ACIM motor.
You could make direction of rotation fixed. Like CW determines forward and CCW is reverse. Then if we need to install motor the wrong way we just swap phase wires, motor wont know the difference. That way we could use only signal A. Maybe you could make a menu in code so we can select encoder no. 4 as 1ch encoder?

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