Bafang m510 Controller/ Display Failure

[lepard07623]

Hello Everyone,

Im new to the Bafang e bike experience and I need your advice.I needed a motor with more torque to tackle lots of hills in my city.

So I picked up a used e bike with a Bafang m510 motor with 56 km on the clock. After riding for 150 km while I was riding on a 205 m hill on first gear 4 th level of motor support, the display switches off and the chain jumps of the chain ring.
I tried turning on the display again it doesn't work. My suspicion is that the controller overheated and broke down. I ordered a new controller and the BESST Tool to perform more diagnostic because I couldn't figure out what's wrong. All the cables and connectors still look good.

Do you have any similar experiences with the m510?
Are they really that fragile?

Best Regards

 

[ncs]

After riding for 150 km while I was riding on a 205 m hill on first gear 4 th level of motor support, the display switches off and the chain jumps of the chain ring.
I tried turning on the display again it doesn't work. My suspicion is that the controller overheated and broke down. I ordered a new controller and the BESST Tool to perform more diagnostic because I couldn't figure out what's wrong. All the cables and connectors still look good.

Hi, have you 48V on motors input from battery? try to reconnect all cables , main cable from motor to display on motor
check button that enable battery output (not on all models)

not correlated things: display switches off and the chain jumps of the chain ring
chain will not affected by motor, display, ..

 

[lepard07623]

Hi, have you 48V on motors input from battery? try to reconnect all cables , main cable from motor to display on motor
check button that enable battery output (not on all models)

not correlated things: display switches off and the chain jumps of the chain ring
chain will not affected by motor, display,

Its a 36 V dual battery system. I measured the voltage on the controller input. It shows 42 V which is normal for a fully charged 36V battery. The display is a DP C10.CAN and the bike is turned on by the power button on the handle. There's no switch for the Batteries. Once they are installed they always supply the voltage.
A possible theory is that the controller overheated, got damaged and switched off the display and the loss of motor support resulted in the chain jumping out.

 

[eugene8]

Could be a torque sensor malfunction

 

[ncs]

Its a 36 V dual battery system. I measured the voltage on the controller input. It shows 42 V which is normal for a fully charged 36V battery. The display is a DP C10.CAN and the bike is turned on by the power button on the handle. There's no switch for the Batteries. Once they are installed they always supply the voltage.
A possible theory is that the controller overheated, got damaged and switched off the display and the loss of motor support resulted in the chain jumping out.

Somewhere I read that early boards may have this problem, may be it is board, but I recommend found someone with work display to connect it to check.
I have 2 m510 with 3000km on each - work good, so it is not such "fragile".
In your theory with overheating main problem should be with MOSFETs that power motor, when it die you can measure short circuit on its power line or on input.