ATV21H075N4

The Schneider Electric ATV21H075N4 is a variable frequency drive (VFD) specifically designed for asynchronous motors. It efficiently handles a rated motor power of 0.75 kW (1 HP) and operates within an input voltage range of 380 to 480 V AC, allowing for ±10–15% tolerance. This drive is equipped with an integrated Class A EMC filter, ensuring compliance with IEC/EN standards.

Users can expect a physical size of 297 mm in height, 215 mm in width, and 192 mm in depth (approximately 11.7" x 8.5" x 7.6"). It has a robust enclosure with an IP20 rating, with options to upgrade to IP21 or IP41 by adding covers for enhanced protection.

The ATV21H075N4 supports various motor control modes, including constant V/F, sensorless vector control, quadratic V/F, and IR compensation, allowing for flexible adaptations to meet specific application needs. Additionally, it has an output frequency range of 0.5–200 Hz and a maximum continuous output current of 2.2 A at voltages between 380 to 460 V.

Communication capabilities include Modbus RTU via RS485, with optional add-on cards providing support for BACnet, LonWorks, or FLN protocols. For effective monitoring and control, the drive includes two analog inputs, an analog output, two configurable relay outputs, and three discrete inputs, facilitating diverse applications.

In terms of protection, the ATV21H075N4 is equipped with features that safeguard against overcurrent, phase loss, thermal overload, DC bus overvoltage, and short-circuit conditions. Its adjustable switching frequency can reach 12 kHz but can be adjusted up to 16 kHz with appropriate derating. Operating efficiently within a temperature range of -10°C to +40°C (14°F to 104°F) without derating, this drive achieves a high level of dielectric isolation, 3535 V DC from earth to the power terminals and 5002 V DC from control to power terminals.