Have a problem...

[Robroy]

Hi.
Im from Norway and have been following this site for a while, very interessting reading..
I have a thing.. im repairing an ebike with rear hub motor. I think its 220 watt bafang. Its an Sinophx E-bike. 36V.
The cpntroller went bad on it so i bought a new kit for it. Ebay. https://www.ebay.com/itm/303729071775?_trkparms=amclksrc%3DITM%26aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160908105057%26meid%3D891da57ca85f4f3e84971a0c99b9fc07%26pid%3D100675%26rk%3D2%26rkt%3D15%26sd%3D325106695571%26itm%3D303729071775%26pmt%3D1%26noa%3D1%26pg%3D2380057%26brand%3DUnbranded%2FGeneric&_trksid=p2380057.c100675.m4236&_trkparms=pageci%3A325dd835-0673-11ed-8166-8eaaf70f583d%7Cparentrq%3A1069a5751820a4d75f9450baffee01d9%7Ciid%3A1

I have connected this first with only throttle, lcd and hubmotor with hall sensor connected. Powers on fine but nothing happens with throttle on. But qhen i take of the hall sensor plugg the it fires up just fine. Throttle working and seems all fine.
Anyone know why its not working with hall sensor connected?? I have not tested if hall sensors are ok.

 

[amberwolf]

4
im repairing an ebike with rear hub motor. I think its 220 watt bafang. Its an Sinophx E-bike. 36V.
The cpntroller went bad on it so i bought a new kit for it.

What specifically did it do or not do to cause you to replace the controller, and what happened to it just before it started showing the symptoms of the problem?

Knowing this may help us help you find the present problem.

I have connected this first with only throttle, lcd and hubmotor with hall sensor connected. Powers on fine but nothing happens with throttle on. But qhen i take of the hall sensor plugg the it fires up just fine. Throttle working and seems all fine.
Anyone know why its not working with hall sensor connected?? I have not tested if hall sensors are ok.

The most likely problem, assuming the problem existed before and is the reason the old controller was replaced (even if your symptoms were not exactly the same), is that a hall signal is not reaching the controller, either because a sensor in the motor has failed, or because there is a wiring or connector problem, so when the sensors are connected, it doesn't see the proper combination of signals to know the rotation position of the motor.

If the controller you have now is "dual function", meaning it can run sensorless or sensored, then when the improperly-signalling sensors are disconnected completely, it falls back to sensorless so the system then works.

If this is all the case, then to fix the problem you'd need to know why the hall signals are not making it to the controller when they're plugged in. Knowing what it did or didnt' do before replacing the controller, and what happened just before the problem started, may help narrow down the troubleshooting steps.