BionX seem to be locked in generating mode...

[frankyboy]

My BionX P-350 motor stopped working and seems to be locked in a regenerating mode. There is a huge drag on the hub and you can hardly turn it as if it is a very strong dynamo. No sound of problems with the bearings or whatsoever and feels like the magnets and generating this resistance. I can power up the system and even connect it to the BBI2 software but I don't know what could cause this. The strange thing is that this drag will not disappear when the motor is disconnected from the cables.

Any suggestions or people who had this some malfunction? Would there be a short circuit internal because it feels like if you test the wireing of a three phase motor by connecting two of the three wires. This also generate a magnetic drag

 

[saneagle]

My BionX P-350 motor stopped working and seems to be locked in a regenerating mode. There is a huge drag on the hub and you can hardly turn it as if it is a very strong dynamo. No sound of problems with the bearings or whatsoever and feels like the magnets and generating this resistance. I can power up the system and even connect it to the BBI2 software but I don't know what could cause this. The strange thing is that this drag will not disappear when the motor is disconnected from the cables.

Any suggestions or people who had this some malfunction? Would there be a short circuit internal because it feels like if you test the wireing of a three phase motor by connecting two of the three wires. This also generate a magnetic drag

That can only happen because of a short circuit between a pair of motor phase wires. Unfortunately, it's quite a difficult repair. I'm not sure, but I seem to remember the Bionx motor splitting down the middle, which means you have to despoke it and completely rebuild the wheel afterwards.

I'm assuming that you have one with the controller inside the motor, which probably means that you have a blown MOSFET causing the short. Whatever it is, you have to open the motor to sort it out.

Once open, most people chuck the controller and attach a normal motor cable so that it can be run with a normal controller and battery, which makes things much cheaper and more reliable in the future.

 

[saneagle]

I found this video of how to do the repair, though he pulled the wrong side off. You pull the brake side off to access rhe controller. Use a standard 9-pin motor cable, not the monstrosity that he uses to go with his very expensive controller.

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