The Schneider Electric ATV212WU30N4CZH28 is an Altivar 212 variable speed drive sized for a 3 kW (4 hp) asynchronous motor on a 380…480 V three-phase supply. It carries an integrated Class C1 EMC filter, which means it meets conducted-emission limits for both residential and industrial environments without an external filter — a real space-saver in a panel where EMC compliance is already on the checklist. The drive communicates over a 2-wire RS-485 bus using Modbus RTU at 9600 or 19200 bps, addressing up to 247 nodes. That makes it straightforward to drop into a line controlled by a PLC or SCADA system without a gateway.
Switching frequency and motor protection
Switching frequency is adjustable from 6 to 16 kHz; run it above 12 kHz and you'll need to derate the output current. The drive includes a built-in PI regulator for closed-loop process control — useful for pump or fan applications where you want to hold pressure or flow without an external controller. Protection coverage is thorough: the drive monitors for input phase loss, DC bus overvoltage and undervoltage, motor thermal overload, short-circuits between motor phases and to ground, and PTC probe inputs from the motor. That last one — PTC probes — means you can wire motor thermistors directly to the analog input terminals without an external relay.
The drive measures 340 mm high by 230 mm wide by 208 mm deep, with a heat sink on the back. Mount it vertically within ±10 degrees for proper airflow. Altitude derating kicks in above 1000 m — 1 % per 100 m up to 3000 m, and limited to 2000 m for corner-grounded distribution networks. Operating humidity range is 5 to 95 % non-condensing.
The drive carries CE marking and is designed to IEC 61800-5-1 (safety) and IEC 61800-3 (EMC). It meets multiple EMC environment categories — C1, C2, and C3 depending on installation — and is listed under EN 55011 Group 1 Class B for conducted emissions. Noise level is rated at 55 dB.