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AS450 Series Heavy-Duty Three-Phase Vector VFD




The AS450 series of frequency vector VFDs are a game-changer in the world of heavy-duty industrial equipment. These VFDs go beyond just VF control, offering advanced speed sensorless vector control technology, closed-loop vector control technology, and torque control technology. These advanced features not only enhance product reliability and environmental adaptability, but also provide customized and industrialized design options.


The AS450 series VFDs are specifically designed for heavy-duty applications, boasting an impressive 1.5 times overload capacity. They are capable of supporting AC induction motors and permanent magnet synchronous motors with a capacity ranging from 1.1 kW to 355 kW. This makes them an ideal solution for a wide range of heavy-load devices, including extruders, compressors, mixers, belt machines, and more.


With their advanced features and robust design, the AS450 series of VFDs offer superior performance and efficiency, helping to optimize production processes and reduce maintenance costs. If you're looking for a reliable and versatile VFD solution for your heavy-duty industrial equipment, look no further than the AS450 series from our trusted brand.

Universal AS450 Series Heavy-Duty Three Phase Vector VFD


Performance Features: 

Efficient and Energy-Saving Operating Mode

Our VFDs are designed to be highly efficient, incorporating advanced energy-saving operating modes and innovative PWM dead-time compensation technology. This allows our VFDs to reduce motor loss and minimize power consumption, helping to improve overall energy efficiency and reduce operating costs.


Rapid dynamic response

The advanced motor model used in AS450 VFDs allows for quick and accurate response to sudden changes in load, providing superior control and stability even in challenging conditions.


Smooth Tracing Start

Provides smooth and impact-free starting of rotating motors, ensuring that your equipment operates safely and efficiently at all times. With our advanced soft-start technology, AS450 VFDs gradually ramp up the speed of the motor, preventing sudden torque and minimizing stress on the motor and other components.


Strong Grid Adaptability

Equipped with automatic voltage regulation capabilities, ensuring that the output voltage remains constant even in the event of fluctuations in grid voltage. With this feature, AS450 VFDs can automatically adjust the output voltage to maintain a stable and reliable power supply, even in challenging conditions.


Considerate application

High-speed upgrade: When it is light load or no load, the inverter will calculate the maximum speed automatically according to the load in order to improve the efficiency of the equipment.

PID control: The special menu is used for setting PID parameters and for calculating inside the converter, eliminating the need for an independent external regulator option.

DC braking before operation: When the rotational direction of the motor is uncertain in free slide, it adopts DC braking and automatically restarts the motor after stopping.

Multi-speed operation: Based on signal combinations, operating at the internally-set frequency (16-speed instructions at most).

Stable operation of low frequency large torque.

Accurate rotor flux directional control capability can quickly respond and maintain stable operation even in the 0Hz load torque mutation.


Master-Slave connection

Flexible connection

The system allows for both the main drive and subordinate drive to have speed control capabilities, with only minor differences in speed between the two.

To ensure proper coordination between the two drives, the speed signal from the subordinate drive is received by the main drive for follow-up. This is achieved through the use of a droop function, which helps to regulate the speed and maintain a stable system.


Rigid Connection

The main drive operates on speed control while the subordinate drive operates on torque control, which eliminates any difference between the two.

The high-speed and precise transmission of the main drive's torque signal is achieved through two methods:

  • Profibus_DP communication connection: This enables high-precision master-slave control, making it ideal for applications that require precise control.

  • Analog input and output connection: This method is suitable for applications that require low speed and low accuracy master and slave control.

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