To achieve closed-loop tension control, automatic control precision up to ± 2%(This feature is only for part of the model); 
Set features a variety of tension can be switched with the inut signal the output tension of a rapidly changing (its output value is equal to the corresponding set value), to achieve the purpose of inteligent control; 
Excitation currents through the tension control, high control precision, stability and availability of the tension has nothing to do with the winding speed, can be adapted to high-speed winding. 
With data acquisition and output capabilities with computer through RS232C communication, to achieve tension curve and data monitoring.