Schneider ATV71HC25N4 Variable Speed Drive

The Schneider Electric ATV71HC25N4 belongs to the high-performance Altivar 71 series for heavy-duty applications. This 250 kW (400 hp) drive manages complex motor systems with exceptional precision. It supports both asynchronous and synchronous motors through advanced vector control algorithms. Furthermore, the unit delivers a speed regulation accuracy of ±0.01% in closed-loop configurations. The drive also provides a significant transient torque of up to 220% for brief periods. This capability ensures stable operation under the most demanding mechanical loads.

Advanced Motor Management and Efficiency

This variable speed drive incorporates the ENA Energy Adaptation system for optimized power usage. It effectively handles unbalanced loads while maintaining high electrical efficiency. Additionally, the drive features an adjustable switching frequency between 2.5 and 8 kHz. This flexibility allows engineers to balance acoustic noise with thermal performance. The integrated PI regulator further enables precise process control for pressure and flow. Consequently, industrial facilities can achieve tighter production tolerances and reduced energy costs.

Industrial Connectivity and Safety

The ATV71HC25N4 facilitates seamless integration through standard Modbus and CANopen communication protocols. Its robust hardware includes an integrated EMC filter to minimize electromagnetic interference. Moreover, the IP21-rated enclosure protects internal components against solid debris and dripping water. The drive supports various expansion cards for encoder feedback and specialized I/O requirements. This modularity allows for customization based on specific factory automation needs. Reliable protection features also safeguard the motor against thermal overloads and short circuits.

Technical Specifications

Versatile Heavy-Duty Applications

The Altivar 71 series excels in complex machinery requiring high torque at low speeds. It serves as a reliable solution for industrial hoists, crushers, and heavy conveyors. Furthermore, the drive manages large-scale centrifugal pumps and fans in utility plants. The intuitive graphic terminal simplifies the configuration of complex motor parameters. Maintenance teams benefit from detailed diagnostic logs and real-time status monitoring. Choosing this drive ensures long-term operational stability for critical heavy industry infrastructure.