Working Principle of the Motor Starters

WARNING

UNINTENDED EQUIPMENT OPERATION The application of this product requires expertise in the design and programming of control systems. Only personnel with such expertise should be allowed to program, install, configure, alter and apply this product. Follow all local and national safety codes and standards. Change in Load type or Starter type can cause short circuit or turn on power supply to the load. Check if appropriate wiring is done according to the Load type or Starter type. Make sure that the motor power supply is cut off while changing the starter settings, digital input settings, and digital output settings. Failure to follow these instructions can result in death, serious injury, or equipment damage.

Based on the application requirements, different types of motor starters are used to switch the motor on or off. There are different types of motors with different wiring connections available for controlling the motor as per the application. The TeSys Tera system provides option to choose the right motor starters to control the motor for different types of application.

The following diagram shows the block diagram of TeSys Tera motor starter.

Once the Start or Stop input command is received, the motor starter logic validates the input source. Based on the selected operating mode, the Start or Stop command is performed. The motor starter logic checks the pre-start conditions (inhibit status and motor status). Depending on the selected starter type, the motor starter logic runs the control logics and updates the contactor control output and the inhibit status.

The inputs and outputs of the motor starter logic are user configurable. The TeSys Tera system allows you to customize the motor starter logic by addition of custom logics before or/and after the motor starter logic. See the following block diagram for example.

For more information on the custom logic editor, refer to the TeSys Tera Motor Management System DTM Library Online Help Guide – DOCA0275EN.