Motors & Controllers Online for Sale in South Africa | DIY Geek

A motor controller might include a manual or automatic means for starting and stopping the motor, selecting forward or reverse rotation, selecting and regulating the speed, regulating or limiting the torque, and protecting against overloads and electrical faults.

The main objective of using a motor controller instead of using a simple mechanical switch is to control the speed, start/ stop and rotation of the motor in a more accurate way. The limitation of a mechanical switch is the current limit. A big electric motor can draw up to 30Amp and above were most of the switches are unable to take it. Furthermore we are unable to control the motor speed using pulse-width modulation (PWM). The most common motor controllers in the market are using H-bridge circuit where we are able to control a large motor using a small signal.

Motor controllers can be manually, remotely or automatically operated. They may include only the means for starting and stopping the motor or they may include other functions.

An electric motor controller can be classified by the type of motor it is to drive, such as permanent magnet, servo, series, separately excited, and alternating current.

A motor controller is connected to a power source, such as a battery pack or power supply, and control circuitry in the form of analog or digital input signals.

Servo controllers are a wide category of motor control. Common features are:

  • precise closed loop position control
  • fast acceleration rates
  • precise speed control Servo motors may be made from several motor types, the most common being:
    • brushed DC motor
    • brushless DC motors
    • AC servo motors

      Motors & Controllers Online for Sale in South Africa | DIY Geek