Danfoss offers a range of frequency inverters, also known as variable frequency drives (VFDs), under the brand name VLT (Variable Frequency Drive) for low-voltage applications. These inverters provide precise and efficient control of motor speed and torque in various industrial and commercial applications. Here are some key features and characteristics of Danfoss VLT frequency inverters:

• 1. Voltage and Power Range: The VLT frequency inverters are available in low-voltage ratings, typically from 200V to 690V, covering a wide range of power ratings to suit different motor sizes and application requirements.
• 2. Motor Control: The VLT frequency inverters are designed for controlling the speed and torque of electric motors. They allow for precise control of motor speed, acceleration, deceleration, and direction, enabling energy-efficient operation and process optimization.
• 3. Control Methods: These inverters offer various control methods, including scalar control, sensorless vector control, and closed-loop vector control. The control method can be selected based on the specific application requirements and desired motor performance.
• 4. Advanced Motor Protections: The VLT inverters incorporate advanced motor protection features, such as overload protection, short-circuit protection, phase loss protection, and overtemperature protection. These protections help to safeguard the motor and ensure safe and reliable operation.
• 5. Energy Efficiency: Danfoss VLT frequency inverters are designed to optimize energy consumption and reduce operating costs. They provide features such as energy-saving modes, adaptive control algorithms, and automatic motor flux optimization to improve energy efficiency and minimize energy wastage.
• 6. Communication and Integration: The VLT frequency inverters support various communication protocols, such as Modbus, Profibus, Ethernet, and CANopen, allowing for seamless integration into automation systems and communication with other devices. This enables monitoring, control, and data exchange for improved system performance and diagnostics.
• 7. Application-Specific Functionality: Danfoss VLT frequency inverters offer application-specific functionality and dedicated software tools for specific industries or applications. These include features such as pump control, fan control, crane control, and more, tailored to meet the unique requirements of those applications.
• 8. Configuration and Programming: The VLT inverters can be easily configured and programmed using user-friendly interfaces, such as keypad displays or PC-based software tools. This simplifies commissioning, parameter adjustments, and monitoring of the inverter’s operation.
• 9. Compliance and Safety: The VLT frequency inverters comply with international standards and regulations for safety and electromagnetic compatibility (EMC). They are designed to meet stringent industry standards, ensuring reliable and safe operation in various industrial environments.