![]() ![]() ![]() The motor’s datasheet will tell you the direction of the motor from the factory, and it will supply you with the circuit drawings that will show you which terminals are which (positive “+” or negative “-“). Manually reversing the armature leads will reverse the polarity of your motor’s circuit. You can control your DC motor in three ways: Manual Control Your motor’s datasheet will give you specifications on running your motor in nominal and unique circumstances. This can cause the carbon brushes to wear faster and, if not maintained properly, could cause damage to the critical commutator segments, which are not interchangeable. Reversing the direction of your motor will cause the carbon brushes to be pushed over the commutator, facing more friction than the other direction. This beveled edge helps the brush to drag over the commutator easily. Or you can change the polarity in the armature winding.Ī quick cautionary note: Your motor is likely equipped with carbon brushes with beveled edges. You can change the polarity of the circuit at supply or in the field windings. You can reverse the direction of your DC motor in two ways. The change in the flow of current switches the direction of the spinning force, causing the motor’s shaft to begin turning in the opposite direction. Your DC motor can be configured to turn in either direction by simply inverting the polarity of the applied voltage. But how do these applications make it seem so simple? How to Reverse Your DC Motor You can see that there are many practical situations for reversing the direction of a typical DC motor. Reversing the polarity of the supply voltage will produce a force in the opposite direction, helping the motor to stop quickly. There may even be situations where you wish to stop your DC motor quickly, but you don’t have an electric or mechanical brake installed. Some ventilation fans move in both directions to either push air into a building or out of the building. Your dishwasher pumps water into the basin and then out again at the end of the cycle. Your garage door motor produces force in one direction to open the door and then has to reverse the direction to close the door again. Reversing the polarity of your DC motor ’s magnetic field can be used to slow down, stop, or change the direction of the motor’s spinning force. This reversal of directions can be easily controlled by simply inverting the polarity of the applied voltage. Did you install it wrong? Can you reverse the direction of your new motor, or will you have to replace it yet again?Īre DC motors reversible? Yes! DC motors are capable of running in both clockwise and counterclockwise directions. So, you’ve purchased a DC motor, taken the time to install it, and upon startup, you noticed the output shaft is spinning in the wrong direction for your application.
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