The Schneider Electric ATV71HD55N4 is a high-performance 55 kW (75 HP) Variable Speed Drive designed for complex, high-torque industrial machines. Featuring integrated SIL 2 safety, Modbus/CANopen connectivity, and advanced flux vector control, this Altivar 71 inverter provides exceptional motor dynamics and reliability for heavy-duty applications.
The Schneider Electric ATV71HD55N4 is a heavy-duty 55 kW (75 HP) Variable Speed Drive (VSD) from the Altivar 71 series, specifically engineered for complex, high-power machinery. It excels in applications requiring high torque at low speeds and precise speed regulation, supporting both asynchronous and synchronous motors. The drive utilizes advanced control algorithms, including Flux Vector Control (FVC) with sensor feedback and Sensorless Flux Vector Control (SFVC), ensuring superior dynamic performance. Furthermore, it features an Energy Adaptation (ENA) system that dynamically compensates for unbalanced loads, enhancing motor longevity and operational efficiency in demanding industrial environments.
To ensure seamless integration into sophisticated automation architectures, the ATV71HD55N4 comes equipped with integrated Modbus and CANopen protocols. It also supports a wide array of optional communication cards, including Profibus DP, DeviceNet, Ethernet/IP, and Modbus Plus, allowing it to interface with virtually any PLC or DCS. Safety is a primary focus of this unit, as it features an embedded “Power Removal” safety function that meets SIL 2 (IEC 61508) and PLe (ISO 13849-1) standards. This function prevents accidental motor restarts and allows the drive to be used in safety-critical systems or explosive atmospheres (ATEX certified), significantly reducing the need for external safety components.
Schneider Electric designed the ATV71HD55N4 to withstand rigorous industrial duty cycles, offering a transient overtorque capability of up to 220% for 2 seconds. The drive is built with an integrated Class A EMC filter to minimize electrical noise and comply with international electromagnetic standards. Its robust thermal management system, featuring an external heat sink, allows for continuous operation in ambient temperatures up to 50°C. Additionally, the unit is highly customizable with over 150 specialized functions—such as brake control for hoisting and PID regulators for process loops—making it a versatile solution for material handling, textiles, and packaging industries.
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