Schneider Electric ATV320U55N4B Altivar Machine Variable Speed Drive

Versatile Machine Control and Automation

The Schneider Electric ATV320U55N4B serves as a high-performance 5.5 kW (7.5 HP) frequency inverter within the Altivar Machine ATV320 range. This Variable Speed Drive (VSD) specifically targets the needs of original equipment manufacturers (OEMs) by providing advanced motor control for both synchronous and asynchronous motors. Because it features a compact “book” form factor, the module allows for efficient cabinet space management and side-by-side mounting. Furthermore, the drive utilizes sophisticated open-loop velocity control to ensure high dynamic performance and torque stability across a wide range of industrial machine applications.

Comprehensive Safety and Communication

To simplify machine safety integration, the ATV320U55N4B incorporates five embedded safety functions, including Safe Torque Off (STO) as standard. These features enable the hardware to meet high-level safety certifications (SIL3/PLe) without the need for extensive external components. Additionally, the drive provides superior connectivity through integrated Modbus RTU and CANopen communication protocols. This dual-protocol support ensures that the unit exchanges real-time operational data with various control architectures seamlessly. Moreover, the drive supports optional communication modules for EtherNet/IP, Profinet, and EtherCAT, offering maximum flexibility for global automation standards.

Industrial Durability and Ruggedized Design

Schneider Electric engineered the ATV320U55N4B to perform reliably in demanding manufacturing environments. The drive features class 3C3 and 3S2 coated printed circuit boards (conformal coating), which protect the internal electronics from dust, moisture, and chemical corrosion. Consequently, this enhances the longevity of the unit in harsh textile, packaging, and material handling settings. The drive also manages heavy-duty cycles effectively, providing a high starting torque and robust overcurrent protection. By combining this physical resilience with intelligent thermal management, the ATV320U55N4B minimizes unplanned maintenance and maximizes machine productivity.

Technical Specifications

• Manufacturer: Schneider Electric
• Product Range: Altivar Machine ATV320
• Model Number: ATV320U55N4B
• Motor Power (kW): 5.5 kW
• Motor Power (HP): 7.5 HP
• Rated Supply Voltage: 380 V to 500 V AC (Three-Phase)
• Output Current: 14.3 A
• Format: Book Design (Compact Width)
• Safety Functions: STO, SS1, SLS, SMS, GDL (Integrated)
• Embedded Protocols: Modbus RTU, CANopen
• Protection Rating: IP20
• Operating Temperature: -15°C to +50°C
• Weight: 2.9 kg