I don’t own a superPID but this thread seems to indicate that the 5000 RPM lower limit is enforced by the superPID itself, UNLESS one toggles it in “manual” mode, which I understood was the purpose of wiring the spindle dir signal to the superPID “Run” input. Do you have the D13 signal wired between the shapeoko controller and superPID, and does it change state when you do M3/M5 ?
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