The Schneider Electric ATV71HU55N4 is a 5.5kW (7.5HP) Altivar 71 variable speed drive designed for 380-480V three-phase motors. Built for high-torque applications, it features advanced flux vector control, integrated EMC filters, and a graphic terminal for precision industrial automation.
The Schneider Electric ATV71HU55N4 is a high-performance variable speed drive (VSD) within the Altivar 71 range, specifically designed to handle complex, high-torque industrial applications. This 5.5 kW (7.5 HP) drive provides exceptional motor control for three-phase asynchronous motors. Because heavy-duty machinery requires constant torque and high overload capacity, the Altivar 71 series employs advanced flux vector control to maintain precision even at very low speeds.
Furthermore, the ATV71HU7554 excels in providing a “constant torque” profile, which makes it an ideal solution for lifting, material handling, and process machinery. Consequently, engineers can rely on this drive to deliver smooth mechanical movement and robust protection for the entire drivetrain.
This drive utilizes a sophisticated power stage to manage heavy start-up loads. To begin with, the ATV71HU55N4 features an integrated graphic display terminal that provides clear text diagnostics in multiple languages, moving beyond simple LED codes. Additionally, the drive supports the “Safe Torque Off” (STO) function, which prevents unintended motor restarts and complies with machinery safety standards.
Moreover, the unit facilitates advanced connectivity through various communication bus cards, including Modbus and CANopen as standard. By utilizing these ports, the drive transmits real-time performance data to the PLC, allowing for proactive maintenance. The advanced thermal management system ensures that the drive dissipates heat effectively through its integrated heat sink, maintaining operational stability even during high-overload cycles.
The ATV71HU55N4 is a preferred choice for applications that demand high starting torque and precise speed regulation. For example, in hoisting and crane applications, the drive provides the necessary torque to hold and move loads safely. Similarly, in material handling and conveyor systems, it ensures synchronized movement across multiple sections. Because it can handle sudden load changes, it also excels in specialized processing equipment such as grinders, mixers, and wood-processing machinery where consistent motor performance is critical for product quality.
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