Drive sizing and thermal profile
The ATV650U22N4U is a standard version variable speed drive from Schneider's Altivar Process ATV600 series, designed for 380-480 V three-phase supply. Normal duty delivers 2.2 kW (5.6 A) output; heavy duty drops to 1.5 kW with 4 A continuous current at 4 kHz switching. Forced-convection cooling suits the IP55 sealed enclosure — no external fan required, but free air must circulate around the wall-mount housing. Output frequency spans 0.1-500 Hz, with an adjustable PID regulator that holds process loops (temperature, pressure, flow) without an external controller. The built-in STO (safe torque off) meets SIL 3, allowing the drive to serve in safety-related applications up to PL e.
Environmental and EMC capability
Rated IP55 and UL type 12, the drive tolerates dust, hose-down, and condensation (5-95% RH non-condensing). The integrated EMC filter maintains IEC 61800-3 category C2 emissions for motor cables up to 50 m and category C3 up to 150 m — a single unit covers most short- to medium-run installations without an external filter.
Communication and I/O expansion
Ethernet Modbus serial and Modbus TCP are embedded on the standard version. Slot A accepts optional communication modules for PROFINET, DeviceNet, EtherNet/IP, CANopen, Profibus DP V1, or BACnet MS/TP. Slot A also handles digital/analog I/O extension or relay output modules. Eight discrete inputs (including two programmable pulse inputs up to 30 kHz) cover basic sensor feedback.
