Rare Hall Sensor Error? *QS205 5kw + FarDriver 72680*

[Noxen]

Hi.
Writing this thread is actually the only left thing for me to do. I've tried to solve this issue to my best without any luck.
Now I'm going to turn to you guys and really hope that you can help with a solution.
So, I run a FarDriver 72680 on my QS205 with a 72v battery but I just can't get rid of the Hall error message in the FarDriver app.
I know that the 205 has a spare hall but still I get the error code. Once I opened the hub to take a peek i couldnt notice any damage, all the hall wires seemed fine to me. However, the blue and yellow phase wires had a slight scratch which I had to cut away and solder.
The thing that I just cant figure out is that when I have the system powered on and tries to do this hall sensor test with my multimeter.
from my multimeter i put the negative on the black wire on hall sensor plug and then I go through the yellow, blue, green.
But every hall sensor is reading 9v, both the original and spare hall.
Why is that? I feel like I've been looked through the whole internet to find anything about this.
I would be thrilled if anyone can give me some tips or feedback. Just let me know if I should post any pictures.
Thank you in advance.

 

[Portugaline]

Hello,

can you please post the error and your hall sensors connections to the controller.

didi you try to move the stator and see the voltage change? voltage should not be the same and should change when you turn your stator.

this is for a scooter motor but is a good manual:

Using a Multimeter to Verify the Hall Sensors in Your Electrical Motor (M365 Scooter)

Using a Multimeter to Verify the Hall Sensors in Your Electrical Motor (M365 Scooter): My Xiaomi M365 scooter suddenly made a terrible rattling noise, it was like the wheel was grinding some bolts. Loss of power, loud noise and the feeling that the motor is somehow blocked are often signs that...

www.instructables.com

 

[Noxen]

Thank you for taking your time to help!
Yes, I’ve tried turning the wheel while having black multimeter stick on black hall and red multimeter stick on every other cable on the hall plug, sadly without results. Both of the hall plugs keep sending 9v whether I turn the wheel or not.
I’ll throw in the pictures from the app and on the hall connector to controller.

 

[Portugaline]

Well if the voltage is always the same in all the hall sensors and doesn't change when you rotate the stator you have bad sensors, in the other hand you say its a qs motor with 2 independent sets of hall sensors, I find it very odd that the motor come with 2 bad sets of hall sensors.

did you used this motor or controller before?

 

[Noxen]

Yup, thats what I was afraid of. But I just thought it was strange that I'm reading 9v on the hall plug. I might be wrong but as far as I know they should only travel between 0 and 5v. I mean I havent seen anyone getting 9v in the hall, which got me kind of confused. Yeah no, the motor is old, the controller though I purchased recently. I've ordered bunch of hall sensors now so I'll be installing those when they arrives, probably worth changing the whole hall cable set too.

 

[Portugaline]

yes the halls should output from 0v to 5v.



The question is why you have 2 sets of bad hall sensors, yes you should check for some short between all this wires before soldering the new hall sensors of install a new cable set. Bad luck.

 

[antontoy]

Может проблема в контроллере? У меня тоже qs 205, fardriver 72450, тоже перестали работать сначала один комплект холлов, потом второй.

 

[TommyCat]

Может проблема в контроллере? У меня тоже qs 205, fardriver 72450, тоже перестали работать сначала один комплект холлов, потом второй.

Translated to English is…

Maybe the problem in the controller? I also have qs 205, fardriver 72450, also stopped working first one set of heads, then the second.