ok thats fine,... I seperated the powersupply for LFEP and the Motordriver meanwhile. Why there was a bridge I did not find out,... however normaly the volage went from input to the voltage regulator of the LFEP and then to Motodriver drive current in. I simply disconnected the voltage regulator for 12V and put a 12V PS in between. I dont have the pinning in mind but as I remeber the voltage goes then directly to Motordriver,... and the pinconnectors for the V40 are somehow in between,...
I think it should be possible in my case to drive directly with 40V then. The only thing I am not sure now is what was the pin connected on the power plug for? Does it have to be removed when you use V40 too??
Maybe it could make some direct connection to pins for the V40 board,... not sure now.