Using a DC starter for speed control of a DC motor is not a common or efficient practice. DC starters, often in the form of contactors or manual switches, are primarily designed for the purpose of starting and stopping a DC motor rather than providing variable speed control.
To achieve effective speed control of a DC motor, a more sophisticated control system is typically required. One of the widely used methods for DC motor speed control is the use of a DC motor controller or drive. These controllers vary the voltage or current supplied to the motor, thereby regulating its speed.
There are different types of DC motor controllers, including armature voltage control, field flux control, and pulse-width modulation (PWM) controllers. These controllers provide precise and continuous speed control, allowing the motor to operate at different speeds based on the application requirements.
Using a simple DC starter for speed control is limited because it often involves only on/off functionality and may not provide the smooth and continuous speed adjustments needed for various applications. Additionally, abrupt changes in voltage when using a starter for speed control can lead to issues such as motor wear, reduced efficiency, and increased likelihood of mechanical stress on the system.
In summary, while a DC starter can be used to start and stop a DC motor, it is not a suitable method for achieving speed control. Implementing a dedicated DC motor controller designed for speed regulation is a more effective and recommended approach for achieving variable speed control in DC motor applications.