PWM, victors and motors

[Mike Betts]

Originally Posted by SoD

We need to get the Fisher-Price 9012 motor to work... but the problem is that we can't give him more than 40 Amps... which meens we need to control the PWM values in a way that the victor won't give more than 40 Amps... meening somewhere between 255 and 127. But how can we know the exact value?

Sod,

You can give the motor more than 40A. The Victors (PWM control) regulate the voltage to the motor. The current is a factor of the voltage provided and the mechanical load on the FP.

I would start by reading some of the presentations on motors in the white papers section of this forum (anything written by Joe Johnson is great).

Next, I would search these forums on how a circuit breaker works and how you can deliver more than 40A to a motor.

Regards,

Mike