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The main function of soft starter

Jan 13, 2019

1. Overload protection function: the soft starter introduces the current control ring, so that the motor current can be tracked and detected at any time. By increasing overload current setting and inverse time limit control mode, the overload protection function is realized. When the motor is overloaded, the thyristor is switched off and an alarm signal is sent out.

2. Phase-out protection function: when working, the soft starter can detect the change of three-phase line current at any time, and make a phase-out protection response once the current is cut off.

3. Overheating protection function: detect the temperature of thyristor radiator through the internal thermal relay of the soft starter. Once the temperature of the radiator exceeds the allowable value, the thyristor will be shut off automatically and an alarm signal will be issued.

4. Function of measuring circuit parameters: when the motor is working, the detector in the soft starter is always monitoring the running state of the motor and sending the monitored parameters to the CPU for processing, and the CPU will analyze, store and display the monitored parameters. Therefore, the motor soft starter also has the function of measuring circuit parameters.

5, other functions: through the combination of electronic circuits, but also in the system to achieve a variety of other interlock protection.