Specifications Parameter Category Details Manufacturer & Series Schneider Electric, Altivar 303 Complete Model Number ATV303H037N4 Product Type General Purpose Variable Frequency Drive (VFD) Rated Output Power 0.37 kW Rated Output Current 2.2 A Motor Power (HP) 0.5 HP Supply Voltage & Phase 1-phase, 200 - 240 V AC (±10%), 50/60 Hz Output Voltage & Phase 3-phase, 0 to input voltage, 0.5 to 400 Hz Control Method Scalar (V/f) control with multiple preset curves (linear, quadratic, user-defined). Also supports sensorless flux vector control for improved low-speed torque (depending on firmware/configuration). Standard Features • Multiple Pre-programmed Application Macros: (Standard, Hoisting, Pump/Fan, etc.) for quick setup. • Integrated PID regulator. • Automatic torque boost. • DC injection braking. • Energy Saving mode. I/O Terminals • Digital Inputs: 3 (configurable) • Analog Input: 1 (0-10V) • Relay Output: 1 (Changeover contact) • Analog Output: 1 (0-20mA) Communication Integrated Ethernet Port (Modbus TCP/IP) as standard (denoted by N4). Also includes an RS-485 serial port (Modbus). Keypad / Display Not supplied standard with this "N4" version. Requires separate purchase of a compatible keypad (e.g., graphic display keypad). Enclosure IP20 / UL Type 1 (Panel-mounted, requires installation in a suitable enclosure). Protection Features Motor overload, short-circuit, ground fault, overvoltage, undervoltage, input phase loss, overheating, auto-restart. Braking Standard DC injection braking. Suitable for general deceleration. For frequent or high-inertia braking, an optional dynamic braking resistor is required. Ambient Temperature -10°C to +50°C (with derating above 40°C). Up to +60°C with significant derating. Storage Temperature -25°C to +70°C Relative Humidity 5% to 95% (non-condensing) Pollution Degree 2 Standards & Certifications CE, cULus, RoHS, compliant with IEC 61800-5-1, IEC 61800-3. Configuration Software SoMove (Free software for commissioning, parameter management, and monitoring). Can also be configured via a separate keypad. Typical Applications Small conveyors, fans, pumps, mixers, packaging machines, and other general-purpose machinery using three-phase motors where only single-phase power is available.