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Views: 43 Author: Site Editor Publish Time: 2025-04-10 Origin: Site
A Variable Frequency Drive (VFD), also known as an AC motor drive, is an essential product that leverages modern power electronics and microcomputer control technologies. It transforms a fixed-frequency and fixed-voltage AC power supply into a variable-frequency and variable-voltage AC power source by converting AC to DC and then back to AC through power components. This conversion allows for precise control of motor speeds, facilitating the execution of various mechanical processes and achieving energy savings.
Established in 2008, HARS has rapidly advanced its VFD series by capitalizing on its core expertise in electronic technology and accumulating extensive industry application knowledge. The company has built a robust brand presence in the industrial automation market. Offering a comprehensive range of products—from micro to high-power VFDs, and from general-purpose to industry-specific models—each series is optimized to meet specific application requirements such as torque, loss, overload, and overspeed operation. Furthermore, these products can be tailored to align with various industry application attributes.
The HS-320 series represents HARS's new generation of compact, refined, and general-purpose sensorless vector VFDs. Despite their small size and lightweight design, these drives inherit the outstanding performance characteristics of HARS VFDs. They come equipped with a wealth of application functions, including multi-speed operation, torque compensation, PID control, multi-pump rotation control, constant pressure water supply, and leakage detection. Additionally, the HS-320 series features a comprehensive protection mechanism encompassing overcurrent, overvoltage, undervoltage, overheating, overload, over-torque, and output phase loss protections. By integrating these features, the HS-320 VFDs help customers reduce additional costs and achieve superior process control.
The HS-320 series boasts a small and robust structure, making it suitable for installations where space is limited without compromising durability.
Users can select from various control methods, including digital operation panels, external terminals, and Modbus communication, providing flexibility to meet different application needs.
These features enable efficient management of multiple pumps and maintain constant pressure in systems, which is particularly beneficial in water supply applications.
The HS-320 series can manage two motors operating in parallel and detect output disconnections, enhancing system reliability.
With a rated output current capable of handling 150% overload for 60 seconds, the HS-320 series ensures robust performance under demanding conditions.
HARS offers a complete VFD product line designed to satisfy a wide array of customer requirements while reducing application costs and fulfilling the demands of industrial automation control systems. Beyond the HS-320 series, HARS provides other notable VFD series, each tailored to specific applications and performance needs:
This series offers versatile functionalities suitable for various applications, featuring V/F control, open-loop vector control (SVC), and closed-loop vector control (FVC). It supports output frequencies up to 999.0Hz and includes built-in PID control, motor parameter self-tuning, and robust protection features.
Designed for precision and efficiency, the HS-310 series supports applications requiring stable speed accuracy and offers multiple control modes, including V/F and vector control. It is equipped with comprehensive protection mechanisms and user-friendly interfaces.
Aimed at high-performance applications, the HS-720 series supports output frequencies up to 3200.0Hz, offering both open-loop and closed-loop vector control. It includes advanced features like automatic voltage regulation (AVR), low noise operation, and extensive communication capabilities.
This series caters to applications requiring single-phase input and output, providing reliable performance in a compact design. It is ideal for small machinery and equipment requiring precise speed control.
As a government-supported high-tech enterprise, HARS has obtained ISO9001:2015 quality management system certification and EU CE certification. The company has been honored with awards such as the National Innovation Fund, High-tech Research Subsidy, Product Innovation Award, and Most Valuable Investment Award. With continuous research and development efforts, HARS's VFDs have evolved into three major series and over ten specialized models, earning five invention patents and more than thirty utility model patents.
HARS VFDs are renowned for their intuitive interfaces and ease of installation. They provide simple parameter settings, allowing users to adjust speed, voltage, and frequency without extensive technical knowledge. The LCD displays offer real-time feedback, including motor speed, output voltage, and error messages, facilitating monitoring and troubleshooting. Additionally, their compact and lightweight designs make them easy to install in confined spaces. Support for multiple communication protocols, such as MODBUS and RS485, enables seamless integration with industrial automation systems.
Safety is paramount in industrial environments, and HARS VFDs incorporate several protective mechanisms to ensure safe operation:
These features prevent damage to the VFD and motor by shutting down operations in case of voltage fluctuations.
In the event of a short circuit or excessive current, the VFD automatically stops the motor to prevent severe damage
This function monitors the motor's current and temperature, preventing damage from prolonged overcurrent conditions. By detecting excessive current flow, the VFD can adjust or halt operation to protect both the drive and the motor, thereby extending their operational lifespan.
HARS VFDs are equipped to detect phase loss conditions, which can occur due to issues like blown fuses or wiring problems. Upon detecting a phase loss, the VFD can shut down operations to prevent motor damage and ensure safety.
This safety feature provides a reliable method for rapidly shutting down motor operations in emergency situations. By interrupting the drive's output, STO ensures that the motor cannot produce torque, allowing for safe maintenance and emergency stops.
HARS VFDs can detect ground faults, which occur when there is unintended contact between the motor windings and the ground. By identifying such faults, the VFD can take corrective actions, such as shutting down the system, to prevent electrical hazards and equipment damage.
Hars offers a comprehensive range of variable frequency drives (VFDs) designed to meet diverse customer requirements and reduce application costs, effectively addressing the needs of industrial automation control systems. The company boasts a robust technical support department and provides an 18-month quality assurance, ensuring a worry-free after-sales experience. As a leading enterprise in China's VFD industry, Hars stands out as your premier choice for VFD solutions.
