Summary

With the continuous improvement of process requirements and labor costs in the wire and cable industry, the requirements of the wire drawing machine system for variable frequency winding are getting higher and higher. The original need for manual auxiliary start, acceleration and overshoot is too large, and the inverter control cannot be emergency and continuous line shutdown The winding system scheme has become increasingly unable to meet the requirements of modern technology. This article introduces the application solutions of the special frequency converter for the JAC580L wire drawing machine of Jarol shares on the water tank type double frequency conversion wire drawing machine and the straight wire drawing machine.

Keywords: frequency converter; water tank wire drawing machine; straight wire drawing machine; tension control

I. Introduction

In the wire drawing machine industry, there are many types of equipment involved. Common wire drawing machines include water tank wire drawing machines, straight wire drawing machines, pulley wire drawing machines, inverted wire drawing machines, etc. The wire drawing machines are mainly used for copper wire and stainless steel wire. The processing of other metal cable materials is an extremely important processing equipment in the cable manufacturing industry. It can be mechanically decomposed into a drawing part and a take-up part. Through the position change of the tension swing rod, the feedback control system is automatically calculated and the tension is maintained by changing the running speed of the winding motor. As the main electrical control part of the inverter, its performance, especially the precision of tension control, directly affects the quality and output of the product.

2、The Requirements of the Wire Drawing Machine for the Inverter

（1）The inverter is required to have good low-frequency torque characteristics and large starting torque.

（2）The PID responds quickly to ensure that the entire system works smoothly in a synchronized state.

（3） The inverter has a disconnection detection function. When the disconnection occurs, it will automatically give a disconnection signal, so that the entire system will stop quickly.

3. Introduction of Special Inverter for JAC580L Wire Drawing Machine

JAC580L wire drawing machine special frequency converter has a variety of application macros, which simplifies the debugging process and is simple to debug. A single set of PID can meet the application of empty disk to full disk. The same model does not need to set the coil diameter to replace different size disks, and supports different wire diameters and different materials. Wire, provide multiple PID groups to facilitate different debugging occasions, support the minimum differential pressure range of 2V, can save the pendulum potentiometer amplification gear. Support Modbus, Profibus-DP, CANopen communication.

Product Features:

（1）Control mode: vector control technology (FVC, SVC), torque control technology, and V/F control technology are integrated. At the same time, synchronous control function and tension control function are designed to facilitate the use of winding.

（2）Tension control mode: separate PID tension control or main inverter + PID tension control.

（3）Set several groups of parameter macros according to different user habits, reducing the workload of user settings.

（4）Dynamic parameter control: roll diameter, transmission ratio, wire diameter, control plate, half plate, full plate, low speed, medium speed, high speed, tension and wire breakage are all handled automatically by the inverter.

（5）No PID board, PLC, external controller is needed, only a few intermediate relays, indicator lights and display instruments are needed for external operation switches.

（6）The system is simpler, the cost is lower, and the maintenance is more convenient. At the same time, the control effect is better and the equipment operation is more stable.

（7） The tension balance bar can be turned on and run in the lower limit, middle or upper limit. The wire drawing speed is automatically tracked, and the tension balance bar is basically maintained at the midpoint position.

4、Application Advantages

（1） There is no need to set the inverter parameters, the factory value is the best parameter, just need to connect correctly according to the manual, then it can start and work normally.

（2）Low-speed die wear and high-speed drawing are independent of each other, and the drawing process is energy-efficient and efficient;

（3） Robust winding function winding model to realize automatic identification and setting of winding diameter;

（4） Automatic tracking of host speed;

（5）Smooth start, stable operation and constant tension;

（6） The feedforward PID control scheme is adopted, which can completely replace the external PID.

5、Application Video

6、Concluding Remarks

 Jarol shares JAC580L wire drawing machine special frequency converter is optimized for the tension control of the water tank type double frequency wire drawing machine and the straight wire drawing machine. The coil diameter calculation has been cancelled. The user can perform a separate PID or main + PID method for tension control according to the working conditions. . After customers' actual use, the stability of tension, the ease of parameter setting, and the stability of the system have all been recognized by customers.