You should be able to drive at 3 amps if your motor is rated 3 amps.
If the motor is driven unipolar, you will drive each phase to 3 amps.
If you rewire the motor to 8 wire and run the phases in series, you would then have to reduce the current.
The stepping action of the motor and the fact that the phases are at 90 degrees to each other, also reduces the effective current through the motor.
If the motor runs cool, you know it is not being overdriven. |