Schneider ATV320U40N4B Altivar 320 Variable Frequency Drive, 4.0kW 3-Phase 380-500V Compact Industrial VFD

Schneider ATV320U40N4B Altivar 320 4.0kW 3-Phase 380-500V VFD For Medium-Heavy Duty Industrial Motor Variable Speed Regulation

Schneider ATV320U40N4B compact book-type variable frequency drive is a high-performance 4.0kW heavy-duty model within the Altivar 320 series. Equipped with built-in Class C2 EMC filter, certified STO safety function and dual native fieldbus communication, this VFD delivers reliable high-torque output, ultra-wide speed regulation and excellent environmental stability for industrial fans, heavy-duty process pumps and standard automated production machinery.

Schneider ATV320U40N4B Altivar 320 4.0kW Three-Phase Compact VFD For Medium-Heavy Duty Factory Automation

1. Industrial Structural Design & Superior Environmental Adaptability of Schneider ATV320U40N4B

Space-Saving Book-Style Mounting Structure

Schneider ATV320U40N4B adopts a slim vertical book-shaped casing supporting standard wall-mounted and DIN rail installation, perfectly compatible with compact control cabinet layouts and OEM machine integration. The streamlined body supports neat side-by-side device arrangement to maximize internal cabinet space utilization. Featuring IP20 enclosure protection grade, the unit effectively blocks dust and solid particle intrusion, maintaining stable and reliable internal circuit operation in standard industrial workshop environments.

Wide-Range Temperature & Mechanical Resistance Performance

Schneider ATV320U40N4B ensures full-power continuous operation from -10°C to +50°C without power derating, and supports conditional operational output up to 60°C with proper power adjustment. It withstands 5% to 95% non-condensing humidity and complies with industrial 3C3 and 3S2 environmental classification standards. The reinforced mechanical structure resists routine workshop vibration and instantaneous mechanical shock, enabling long-term unattended continuous operation in complex factory working conditions.

2. 4.0kW Heavy-Duty Electrical Performance & Precision Motor Control of Schneider ATV320U40N4B

Standard Heavy-Duty Electrical Parameters

Schneider ATV320U40N4B features 4.0kW heavy-duty rated motor power with 9.5A nominal output current, tailored for three-phase asynchronous and synchronous industrial motors. Compatible with 380V to 500V global industrial power grids, the drive tolerates -15% to +10% grid voltage fluctuation and supports 50/60Hz standard power frequency operation. Stable voltage and current output eliminates motor speed deviation under variable medium-heavy load conditions, ensuring consistent mechanical operational efficiency and system stability.

High-Torque Regulation & Intelligent Energy-Saving Operation

Schneider ATV320U40N4B delivers outstanding transient overtorque capacity to handle instantaneous heavy startup loads and sudden load fluctuations for medium-heavy industrial equipment. It supports ultra-wide 0.1Hz to 599Hz frequency adjustment, covering full-range working scenarios from low-speed constant-torque transmission to high-speed precision operation. The unit features 4kHz nominal switching frequency with an adjustable 2kHz to 16kHz range, effectively suppressing motor electromagnetic noise and mechanical resonance. Optimized fan and pump dedicated energy-saving algorithms significantly reduce power consumption during continuous cyclic operation, effectively lowering long-term operational costs.

3. Certified Safety System & Multi-Protocol Networking of Schneider ATV320U40N4B

Built-In Functional Safety & Full-Range Electrical Protection

Schneider ATV320U40N4B integrates factory-certified Safe Torque Off (STO) safety function compliant with international machinery safety standards, eliminating external safety relay reliance and simplifying system wiring layout. Comprehensive multi-layer protection mechanisms cover input phase loss, motor short circuit, ground fault, overload, overvoltage, undervoltage and internal overheating. Real-time fault monitoring and automatic power cutoff mechanisms provide full-coverage hardware protection for both the drive and connected motors, ensuring safe and stable long-term continuous operation.

Dual Fieldbus Communication & Versatile High-Precision I/O Configuration

Schneider ATV320U40N4B comes with native Modbus RTU and CANopen dual fieldbus protocols for seamless integration with industrial PLC and HMI systems, supporting real-time operational data monitoring, remote parameter tuning and fault log retrieval. Optional expansion cards extend compatibility with mainstream industrial networks including PROFINET, EtherNet/IP and Profibus. Equipped with 7 multi-function discrete inputs, 3 relay outputs and 10-bit high-precision analog terminals, it supports 0-10V voltage, ±10V differential voltage and 4-20mA current signal access, meeting complex interlock control and high-precision data acquisition requirements for medium-heavy duty automated machinery.