In the sheet processing industry (such as textiles, papermaking, plastic films, metal foils, etc.), the winding process is the core step that determines product quality and production efficiency. Traditional winding machines rely on mechanical tension control methods (such as magnetic powder clutches, torque motors), which have problems such as large tension fluctuations, narrow speed adjustment range, high energy consumption, and complex maintenance.

With the upgrading of industrial automation, the market has significantly raised requirements for the tension stability, speed control accuracy, and energy efficiency of winding machines. The KD600M series frequency converter, with its high-precision vector control, flexible tension adjustment algorithm, and energy-saving features, has become the ideal choice for the electrical control system of winding machines.

The control of the KD600M frequency converter on the winding machine is mainly based on closed-loop tension control and PID regulation. The specific working process is as follows:

1) Tension detection:

Real-time tension signals are obtained through tension sensors or swing rods.

2) Speed matching:

According to the material line speed and changes in the winding diameter, the motor speed is dynamically adjusted to maintain a constant tension.

3) PID regulation:

The internal PID algorithm of the frequency converter automatically corrects the speed to avoid tension fluctuations.

4) Winding diameter calculation:

The winding diameter is calculated in real time using the line speed integration method or ultrasonic ranging, and the torque output is adjusted. 

Core control mode:

• Torque control mode: Suitable for constant tension winding, such as for films and papers.

• Speed control mode: Suitable for situations requiring precise speed matching, such as in textile machinery.

The KD600M frequency converter was demonstrated in action on the winding machine equipment for plastic processing.

The KD600M series frequency converter, with its high-precision control, stable and reliable performance, and flexible scalability, has demonstrated outstanding value in the application of winding machines. Whether it is in wire drawing, textile, film, metal processing or other industries, the KD600M can help customers achieve efficient, energy-saving and intelligent production goals.