fechter said:
Either one of the motor hall sensors or an external wheel sensor. There's a huge difference in pulses per wheel revolution between the hall and wheel, so most of those are only going to work with one or the other.
Does it have a way to calibrate the speed?
It does have calibration, but calibration is not the problem. Problem is that is does not show speed. We tried to play with calibration, when calibration screw turned to minimum or max - shows 60kmh.
When connected to one of three hall wires it shows 0 kmh.
When connected to one of phase wires it shows 60kmh or 0 or 99kmh.
Controller is sabvoton 72150, voltage 72v, lcd suitable for the voltage. Other people has similar issue, solution is not known to me yet.