Thanks for the reply, Gerry.
There's one thing that I'm still not sure of. I had a look on the Xylotex site and found a manual for this board. In this manual it says that the current to the motor is 'Vref/0.33' and that Vref can't exceed 1V. This all makes sense, because that explains the maximum current per phase being 3A. What I don't quite understand, is what the voltage to the motor will be. If the motor is only rated at 4.5V, the power supply is giving 34V and the Vref is set at say 0.8V (to give roughly 2.4A for the motor), then where is this 4.5V (approximately) coming from to drive the motor?
Regards,
Warren |