Inverter parameter setting and wiring
In the actual working process, the most common is to use only the analog adjustment to control the torque, and the speed limit control can use a fixed value, not lower than the maximum operating frequency required by the equipment.
XL frequency converter drives the working process of variable frequency vector motor
After the xl inverter and the variable frequency motor replace the torque motor, it can fully achieve the function of the torque motor:
When the power is turned on, the torque of the motor is adjusted by adjusting the torque control potentiometer. Usually, the customer will have an experience value, and the motor speed will rise to the set speed limit.
When the load is started to be wound, the winding motor will decrease in speed due to loading. When the tension of the plastic film from the traction to the reel reaches the torque adjusted by the motor, the speed remains unchanged and the winding speed is obtained. Speed up, then the tension of this section of the film will be reduced, less than the current torque of the motor, then the speed of the inverter will speed up until the same. vice versa.
If the traction motor stops working, the winding motor will also stop due to excessive tension of the membrane, and the frequency of the inverter will drop to zero while maintaining the existing torque so that the membrane will not slack. Once the traction motor starts working, the winding motor will accelerate and decelerate.
Conclusion:
Using Xunlei frequency converter instead of torque motor to achieve constant tension rewinding and unwinding function, it has superior torque characteristics, and greatly improves the reliability of the equipment, overcomes the heating condition of the motor, saves energy, and can also reduce the fault of the motor. . Therefore, more and more customers are beginning to use inverters instead of torque motors to achieve lateral tension control.
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