Heinzmann wiring problem

[bazzer214]

help please, I have just had my battery upgraded to lithium, with a second hand Heinzmann controller the motor spins but you can stop it with your hand - no power, I have found the 2 thin wires from the motor are not connected to the controller, could this be the problem ?

also found these words of wisdom, relating to changing to Lithium batteries

the Heinzmannn controller has a half voltage wire to monitor battery condition. You would have to disable this circuit.

any help would be great please, this is for my wheelchair trike which I hope to take to burning man festival in Nevada next Thursday !! ( I am paraplegic - cant walk )

ta

 

[jhruk]

I have very limited knowledge of this system but there is some technical info on Ben’s Kinetics website, including how to disable the half voltage check and pedal sensor:

http://www.kinetics-online.co.uk/technical-info/heinzmann-technical-info/#more-315
http://www.kinetics-online.co.uk/technical-info/heinzmann-half-voltage/
http://www.kinetics-online.co.uk/technical-info/heinzmann-control-board/

The two thin motor wires are from a thermistor in the motor which tells the controller to reduce the current as the motor heats up. I’m not sure which way round this works but if the controller has connections for them why not connect them up. If it doesn’t then it should probably work ok without them.

 

[bazzer214]

Thanks -- found Ben’s info on the Kinetics website - and indeed it was the pedal sensor - , sent ben a thank you , and thanks to you as well --- problem solved, well that one anyway