6 hall wires?

[amigafan2003]

Hi all. I

I'm prepraring my Cute 100 motor for use on a new Lyen sensored contoller and I've noticed that the motor side of the connector has the normal three thick phase wires going into it and SIX hall wires - the normal red and black power plus green, blue, yellow and white. However, at the controller end of the cable there are 3 phase wires and only FIVE hall wires (as expected) - black, red, green, blue and yellow.

At the moment I've put a new hall sensor connector on (i.e next to the motor to allow the cable to be split in case the wheel needs to be removed) and wired black>black, red>red, blue>blue, yellow>yellow and green>green. Unfortunately I cut the original motor connector off as it was really hard to mate to the other part and fitted my own connector for the phase wires (currently running sensorless) so I can't be sure that the blue>blue, yellow>yellow > green>green etc is right - i.e. what is the seeming superfluous white wire for?

Anyone any ideas?

 

[dnmun]

what is the resistance to ground? does it toggle as the wheel turns, ie: does the voltage jump to 5V then back down?

it may be a speedo input.

 

[Jeremy Harris]

May be a temperature sensor wire, or perhaps just a spare core if they used 6 core, rather than 5 core, for the Hall connections.

 

[amigafan2003]

Quick report back in case anyone else has a similar issue in the future...

Decided to just hook up all the wires to the controller bar the white wire and it's runs fine (the false positive of 58mph no load speed was interesting!).

Still no idea what the wire wire is for - would be cool if the cute 100's have a speed or temp sensor wire though!

 

[icecube57]

I think its a 6 core wire. I recently had a motor that had one wire unused.

 

[Jeremy Harris]

I've just found the same spare white wire on a Bafang BPM motor, too. The wire isn't connected to anything AFAICS, it seems to be open circuit. However, it does connect to the multipole connector and so there's a strong probability that this extra core leads inside the motor. This opens up the possibility of opening up the motor and adding a temperature sensor, using the Hall supply wires and the spare white wire. Might be useful for those who want to keep an eye on things when running at high power.