The Schneider Electric ATV71HD18N4 is an 18.5 kW (25 HP) variable speed drive for heavy-duty industrial motors. Part of the Altivar 71 series, it features 480V operation, integrated EMC filtering, and advanced flux vector control for precise torque management in demanding automation environments.
Schneider Electric ATV71HD18N4 Altivar 71 Variable Speed Drive
The Schneider Electric ATV71HD18N4 is a high-performance variable speed drive (VSD) belonging to the Altivar 71 family, engineered specifically for high-torque and constant-torque industrial applications. This drive provides precise control for three-phase asynchronous motors with a power rating of 18.5 kW (25 HP). Designed to handle complex motor control tasks, the ATV71HD18N4 excels in heavy-duty environments such as hoisting, wood machines, and process machinery where high dynamic performance and motor protection are non-negotiable.
A standout feature of the ATV71HD18N4 is its sophisticated dual-interface system. It utilizes a graphic terminal that displays full parameter names and descriptive text, alongside a secondary 4-digit embedded display for quick code references. This architecture allows technicians to navigate complex regulation settings—including customized torque curves and advanced braking logic—with high efficiency. The drive supports various control laws, such as sensorless flux vector control (FVC) and voltage/frequency ratios (2-point or 5-point), ensuring adaptability to different motor types and load profiles.
The ATV71HD18N4 incorporates an internal EMC filter, which significantly reduces electromagnetic interference, ensuring compliance with industrial standards without requiring additional external components. For system communication, the drive includes Modbus and CANopen protocols as standard. It also features a modular internal structure with multiple expansion slots that accept encoder interface cards, I/O extension modules, and various fieldbus communication cards (such as Profibus DP, DeviceNet, or EtherNet/IP). This modularity enables the drive to act as a central node in a fully integrated automation network.
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