Motor Controller, Translation

[LewTwo]

I purchased a motor controller and display combination via Amazon:
https://www.amazon.com/dp/B08CRDS6TR

It is a fairly generic unit offered by a number of vendors under their own brand name. The display is labeled "S866" and the Controller part number is "SL-QX041QZ".

First question: There are two distinct sets of motor controllers and displays that make up most of the generic market. The two are not supposed to be compatible with each other despite looking identical and have what appears to be the same wiring. One of those has part numbers that begin with "KT" or "K" and produced by Kunteng.

The other has controllers that have numbers that begin with the letter "S". Does anyone know who the produces the second set?

Second Question: I scanned in the Wiring Diagram for the controller, removed the Chinese and realigned the Chinglish nomenclature. That is this picture:


Then I removed all the nomenclature and entered what IMHO I thought it should say to be more what a native english speaker would understand. That is this picture:


I am asking for corrections, suggestions and/or comments to improve the latter.

Among other things:
Are these "High" or "Low" level brake switches. If I understand the concept they are high level.

I do not really understand what "Adjustable linear electronic brakes" are ... I am just making a wild, hairy guess that they are based on Hall sensors.

I think that the the Yellow wire for the display sends 5 Volts from the display back to the controller to tell the controller to "Turn On" ... another wild hairy guess.


Next task is to translate the S866 LCD documentation ... it is actually not too bad. However it is interesting to note that it ALSO include a two pin connect for a "Lamp".

 

[LewTwo]

I will answer my first question: Wuxi Shang Lian Supply Chain Company, Ltd.

 

[AHicks]

On the white wire, I think it safe to assume speed sensor. There's an issues with some, as they provide a signal only when the motor is turning. This is an issue as when a geared hub is coasting, the motor stops, and your speedo/odometer will go to -0-.

I have seen where some white provide both a temp and a speed signal. How it works though, is above my pay grade/understanding.

Noteworthy as well, headlight power on a KT based controller has extremely low amperage available, and is intended for LED lighting only. If overloaded, a tiny little area on the main board fries, and that function on your controller is gone forever. Point being, using the power directly may not be the best plan. Using it to close a relay is a MUCH better plan.

 

[TommyCat]

Are these "High" or "Low" level brake switches. If I understand the concept they are high level.

From the labeling, wiring, and the controller's sticker that states "Brake input : Low-Level". I would take it to be Low Level Brake.

I do not really understand what "Adjustable linear electronic brakes" are ... I am just making a wild, hairy guess that they are based on Hall sensors.

I would speculate the same.

I think that the the Yellow wire for the display sends 5 Volts from the display back to the controller to tell the controller to "Turn On" ... another wild hairy guess.

Typically this is done with full battery power, albeit at a very low current. With this telling the controller to power up it's electronics, AKA : 5vdc regulated supply.


Regards,
T.C.