Soft Starters ABB 1SFA898211R7000

Basic functions:

Soft start: By controlling the conduction angle of the internal three-phase reverse parallel thyristor, the input voltage of the controlled motor gradually rises from zero value in a preset function relationship within the set time, reducing the impact on the power grid and the wear on the machine during the motor startup process.

Soft stop: After receiving the shutdown command, the thyristor gradually reduces the conduction angle from full conduction, and after a certain period of time until it is fully closed, the motor is soft stopped to better protect the motor and load.

Protection function: It usually has multiple protection functions such as overload protection, phase loss protection, and overheating protection. When the motor is overloaded, the three-phase power supply is phase-lost, or the temperature of the soft starter is too high, corresponding protection measures will be taken, such as cutting off the motor power supply and issuing an alarm signal.

Advantages:

Small size: It has a relatively compact design, occupies little space, and is easy to install and arrange.

Easy to set and debug: The operation interface is relatively friendly, the parameter setting is relatively convenient, and it can quickly achieve matching and debugging with the motor.

Fieldbus control can be realized: It supports connection with the fieldbus system, which is convenient for integration into the automation control system to achieve remote monitoring and management.