Wrong wiring - hub motor damaged??

[davidsvoboda]

Hi, this is Bafang SWXH 250. Does it look like I damaged it already by wrong wiring combination?? What is the damage?

I am worried about the small black spot you can see on the photos..

 

[Ykick]

What were the symptoms? What were you attempting to do?

Are you using sensored or sensorless controller?

Here’s plenty of troubleshooting information to qualify the state of your motor, controller and other bits & pieces:

http://www.ebikes.ca/learn/troubleshooting.html

 

[davidsvoboda]

I am connecting it to a controller - the way it was supposed to connect does not work, so I figured the phase and hall combination is wrong..
I have tried many different combinations now (I think 36- all of them) and was only able to find a few where the motor runs but it is not smooth at all and makes horrible noise - those are the symptoms.. I have matched the black and red wires for the hall sensors right, but previously I might have made even this wrong on a previous controller - therefore I am worried I have damaged the hall sensors or something inside the motor and therefore it makes that noise now.. ?

 

[Ykick]

Test Hall sensors using the link provided. The only caveat with a geared motor is that you need to rotate the wheel in reverse direction to engage the clutch and spin the motor while checking the G/B/Y signal wires for 5V switching to ground (black wire) with motor connected to the powered ON controller.

 

[davidsvoboda]

i've got this at home - http://www.amazon.co.uk/Rapitest-Dm-10-ElECtrical-MultimETer/dp/B0001P0JZA
will it work? how?

 

[Ykick]

i've got this at home - http://www.amazon.co.uk/Rapitest-Dm-10-ElECtrical-MultimETer/dp/B0001P0JZA
will it work? how?

Yes, should work fine to test motor Hall Sensor operation. Follow these directions - http://www.ebikes.ca/documents/HallSensorTestingFinal.pdf

Just rotate the wheel reverse direction and make good solid contacts.

Might help to practice - measure other stuff (batteries?) laying around to become proficient handling the test meter?

 

[davidsvoboda]

No I was asking how does the multimeter work, I don't know that..

It does not turn on - it does not seem to have on off button. How do I get it going?

 

[Ykick]

I dunno that meter, sorry. Maybe you need to activate a battery connection? Pull tag someplace?

If you can’t figure it out or maybe it’s bad I’d just buy another cheap meter.

2-3 cheap meters are always good to have on hand often to help solve issues with one of the meters. They use internal batteries so that can always be a problem.

 

[davidsvoboda]

thanks a lot anyway. can I just ask - when measuring the voltage do I measure black and red cables from the controller or from the motor? didn't get this from the tutorial.. thx

 

[davidsvoboda]

Ok, so I bought myself a voltmeter and I measured 4,36V between black and red wire. So that means hall wires are good?
What else can be the problem?

Thank you!

 

[Ykick]

Black & Red wires supply 5V to power Sensors.

Need to measure Green/Blue/Yellow one at a time to Black while rotating the wheel in reverse normal direction.

Looking for obvious “switching” of the voltage roughly between 0-4.5V on each of those signal wires.

 

[parabellum]

Now rotate the wheel and measure between black and other 3 wires, every of 3 halls must switch between 0 and ~4.5V in some positions (on every magnet actually). If any is not switching, you have shot hall or wire to the hall(or trace on the CB).

 

[davidsvoboda]

It does work actually!! SO what is wrong?

I have uploaded a video here, so you can hear the motor rattle, if that helps.. http://uloz.to/xqHAaZny/motor-noise-3gp

 

[parabellum]

It does work actually!! SO what is wrong?

I have uploaded a video here, so you can hear the motor rattle, if that helps.. http://uloz.to/xqHAaZny/motor-noise-3gp

I am not registered to this site, so I can not see the video. You should have 2 working (forward and backward) combo of 6 possible connection on hall wires (yellow, green, blue usually do not change red and black nor phase wires), hall angle option (60 or 120 degree) in the controller can be an issue as well. In worst case, your troller is shot.

 

[davidsvoboda]

I don't know what is troller. But does the test with measuring from the black to the over halls cables tell me I have got the right cable set up??

here, i posted the video of the motor on youtube - https://youtu.be/1sbDWeQRgQI

I am started to think the problem is with the controller. It is Lyen controller and I see some other people had exactly the same problem with it. (
It is 9 FET 3077 Mark II (Sensored) LYEN Edition Controller.

 

[parabellum]

I don't know what is troller. But does the test with measuring from the black to the over halls cables tell me I have got the right cable set up??

here, i posted the video of the motor on youtube - https://youtu.be/1sbDWeQRgQI

I am started to think the problem is with the controller. It is Lyen controller and I see some other people had exactly the same problem with it. (
It is 9 FET 3077 Mark II (Sensored) LYEN Edition Controller.

Add "Con" to the "troller". Measuring from black to colors only tells you about halls health and position angle
Did you ride it already? How is the torque? Did you try all possible 6 positions of the YGB hall wires.
The video looks normal but sound is horrible.
Did you assemble the motor correctly? It can be some mechanical issue.

 

[davidsvoboda]

I think it can be that some hall sensor is bad actually. On some cables it oscillates between 5V and O, but on some it just seem to stay at 5V.. :/

If I want to replace hall sensor, where do I buy one? Is it just a normal think to buy in any electrical shop? - would this work? http://www.ebay.co.uk/itm/5x-Hall-Effect-Sensor-Linear-Ratiometric-49E-SS49E-Electric-Bike-Throttle-Repair-/281782377861?hash=item419b89dd85

 

[parabellum]

I think it can be that some hall sensor is bad actually. On some cables it oscillates between 5V and O, but on some it just seem to stay at 5V.. :/

If I want to replace hall sensor, where do I buy one? Is it just a normal think to buy in any electrical shop? - would this work? http://www.ebay.co.uk/itm/5x-Hall-Effect-Sensor-Linear-Ratiometric-49E-SS49E-Electric-Bike-Throttle-Repair-/281782377861?hash=item419b89dd85

This community over years came to the verdict that best halls price/quality are SS41 from Honeywell. If some halls do not switch, they are kaput. If you change halls, beter change all 3.
http://www.amazon.com/gp/product/B00LPNKPGK?colid=15RT17VGJG5YO&coliid=I1XGRJXDFZO3AQ&ref_=wl_it_dp_o_pC_nS_ttl (I do not know if they are genuine in this link, better look in the for sale section and buy from forum member)