1.In motor overload or other abnormal situations, variable frequency protection action, guaranteed the safety of equipment 

2.can be used with PLC, realize fully automated processing 

3.Due to the use of the frequency control of motor speed, can according to the realization of the process requirement of energy-saving speed regulation processing 

4.After using the frequency conversion control, start the machine stop when no impact on the smooth, prolong the service life of the machinery