2767370

The 2767370 series is an industrial-grade variable frequency drive (VFD) with modern control design, optimized software algorithms, and high-performance silicon devices. It integrates a wide range of features, including independent closed-loop vector control, multiple speed reference functions, built-in protection functions, and fault diagnosis functions. This series of drives is widely used in production workshops, vehicle turbines, extruders, shock absorbers and other industrial control needs. It is the ideal choice for general industrial applications.

Application Field of 2767370

The 2767370 series VFDs are widely used in motor speed control applications such as fans, pumps, compressors, machine tools, injection molding machines, wire drawing machines, and crawler cranes. In particular, it is suitable for low-power, high-precision machining operations. In addition to new equipment, the 2767370 series can also be used to upgrade existing equipment to improve performance.

Working Principle of 2767370

The 2767370 series VFDs are composed of power modules, AC reactors, braking units, DC reactors, peripheral accessories and a series of fan coils. Using a thyristor rectifier unit and a voltage-source inverter unit, the system performs closed-loop vector control. The rectifier unit rectifies the line voltage and then supplies DC voltage to the voltage-source inverter. The inverter then converts the DC voltage into AC voltage to drive the motor.

The closed-loop vector control used in the system is inseparable from the motor speed sensor and the current sensor. The speed of the motor is monitored by the speed sensor. The current sensor monitors the current flowing through the motor. The speed of the motor and the current of the motor are compared with the reference values from the programmable logic controller (PLC), and the voltage output of the voltage source inverter is adjusted accordingly to control the speed and current of the motor.

Safety Features

The 2767370 series VFDs also have a variety of protection functions, such as overvoltage, undervoltage, overcurrent, overload, overheat, and speed limit. When any of these protective functions are activated, the VFD will stop the motor and inform the user so that they can take corrective measures. The built-in fault diagnosis functions allow users to quickly identify the source of any faults.

Conclusion

The 2767370 series VFDs are widely used in a variety of industrial applications, especially for low-power, high-precision machining operations. With its independent closed-loop vector control, multiple speed reference functions, built-in protection functions, and fault diagnosis functions, the 2767370 series is an ideal choice for industrial control needs.