Hello everyone, I wanted to know if there is a way to determine the RPM of an electric motor using the controller that I will link below. I have noticed that there is no output cable that reports a speed value. The only thing that came to mind is the possibility of using the green cable that is part of the connector to connect to the LCD display (which shows the speed in km/h, so there should be information related to the speed of the motor), but I am not sure how to use this signal and how to understand what type of signal it is.
Thanks in advance!

Controller (48V, 800W): https://it.aliexpress.com/item/3270...151214375!sea!IT!0&curPageLogUid=3b23dF9BZWLZ

 

Why do you require motor RPM?
Obviously it would be a direct ratio of the motor rev to revolution/distance of the e-bike wheels.?

 

Why do you require motor RPM?
Obviously it would be a direct ratio of the motor rev to revolution/distance of the e-bike wheels.?

I am using the motor for an application which does not require the rest of the e-bike, so I don't have any wheel. I was wondering if I can be able to measure RPMs of the motor using the output wires of the controller I linked above.
Thanks!

 

The page for the Controller states that there are 2-versions of the Controller,
one has a Connector for the LCD-Display, and one does not have the Connector.

The Controller can be purchased as a "package" with the Controller/Display included together,
and, the Display is also available separately.
But, if You already purchased the Controller,
You must check to see if the Controller that
You have received has the correct connector for the Display.

The Display provides all the information that You could want.
.
.
.

 

It wouldn't surprise me if there was a speed output from the controller, but maybe you can get a signal from the wiring between the motor and controller.

 

In principle, any one of the three hall sensor outputs could be used to calculate motor RPM.