VRALE50L0702401000

Introduction

The VRALE50L0702401000 (hereinafter referred to as VRALE50L) is a high performance light duty variable frequency drive (VFD) developed and produced by the world-famous American manufacturers Abb. It is one of the most popular models of the brand. With its superior performance, strong applicability, simple configuration and easy maintenance, it is widely recognized by users from various fields. This article will discuss the application field and working principle of VRALE50L.

Application Field

VRALE50L has extensive application fields. It is mainly used to control the speed of a wide variety of fans and pumps, such as air compressors, water pumps, blowers, etc. With its built-in high power performance, VRALE50L is able to establish a wide range speed regulation for fans and pumps, improving their running efficiency and reducing noise. Besides, equipping with the adjustable current limit and motor protection functions can improve the motor protection level. Moreover, the soft starting & stopping of VRALE50L can significantly reduce starting current, eliminate damaging mechanical shocks, and prolong motor life.

Working Principle

VRALE50L adopts the vector control method based on speed sensorless vector control technology to achieve precise and reliable speed regulation for fans and pumps. Generally, there are four parts in VRALE50L, including the external/internal interface unit, control/data processing unit, power unit, and voltage regulator. The external/internal interface unit can connect to different sensors and transducers, such as foot switch, manual controller, etc. The control/data processing unit consists of CPU and DSP, serving as the “brain” of VRALE50L to collect signals from the external/internal interface unit and process them. The power unit is responsible for providing power and the voltage regulator is used to regulate voltage stability. Together with the input signals, VRALE50L can adjust the rotating speed of motor, output current, waveform, and torque accurately.

Conclusion

In conclusion, VRALE50L has a broad application field due to its excellent performance, stable operation, and easy maintenance. Compared with the traditional VFD, it has higher control accuracy, wider range of speed regulation and higher energy efficiency rate. Its working principle is based on the vector control method and the four parts together making VRALE50L a reliable light duty VFD.