The precise control of the FGI PM500 low-voltage frequency converter helps the punch press technology reach a new level
Punch press technology is a mechanical processing method commonly used in metal processing, mainly for punching, cutting, forming and other processing operations on metal materials. Nowadays, if domestic punch press manufacturers want to compete with world-class brands, they need to constantly optimize and upgrade their technology. Among them, the frequency converter, as the driving component for punch press control, plays a decisive role in the output stability, accuracy, reliability and load-carrying capacity of high-speed punch presses.
1.Common requirements
Precise adjustment of working speed: Different work contents and requirements call for adjusting the speed of the punching machine to ensure the best processing effect.
Energy-saving and efficiency: Without affecting work efficiency, minimize the energy loss of the punching machine during the start-up and shutdown processes.
Precise control of impact force: Precisely control the impact force to extend the equipment's lifespan and improve product quality.
2.Facility request
The equipment body is made of high-strength cast iron and undergoes processes such as annealing and vibration stress relief to ensure long-term accuracy.
A dynamic balance system is adopted to minimize the vibration of the press machine to the greatest extent, thereby ensuring the accuracy of the stamped products.
A frequency converter speed control system is used, allowing the stroke speed to be adjusted, high stamping frequency, low noise, stable speed, zero error, and suitable for various stamping processes.
A microcomputer control unit is equipped, and all information is displayed on the desktop. The operation is centralized, convenient, and easy to maintain.
3.Solution
The FGIPM500 high-performance low-voltage inverter fully meets the demanding requirements of stamping equipment and has the following unique advantages:
The vector control has a fast response, large torque at low frequencies, stable output across all frequency ranges, fast torque dynamic response, and high steady-speed accuracy. The overload capacity reaches 180%, and the starting torque at 0.5 Hz can reach 150%. This ensures the reliable and stable operation of the stamping machine. At the moment the stamping clutch is closed, the output frequency is stable without fluctuations.
The scientific and reasonable speed tracking algorithm enables the inverter to automatically track the current operating frequency of the motor without stopping the motor. It can stop and start quickly, and can smoothly start without faults when the motor is running with inertia, greatly improving the safety performance of the stamping machine.
Multiple flexible control methods meet the requirements of various complex working conditions.
The structure adopts an independent air duct design, and the fan can be freely disassembled, with good heat dissipation performance.
4.Application scenarios
The press transformed by the frequency converter can not only improve the stamping accuracy and product quality, but also reduce energy consumption and noise levels. In addition, the easy-to-program feature of the frequency converter can also help enterprises better adapt to different production needs and improve production efficiency.
