The Schneider Electric ATH650U22N4 is a current-production Altivar HVAC ATH600 drive sized for 2.2 kW (3 hp) normal duty or 1.5 kW (2 hp) heavy duty on a 380–480 V three-phase supply. Line current pulls 4.837 A at 380 V normal duty, 3.8 A at 480 V normal duty; heavy-duty figures drop to 3.5 A and 2.8 A respectively. Built for HVAC applications — fire mode, forced fire mode, PID controller, damper control, scroll compressor management, and broken-belt detection are available functions. The integrated Class C2 EMC filter meets EN/IEC 61800-3 conducted emission limits for second-environment (industrial) installations without an external filter. Safety integration is straightforward: the drive includes a Safe Torque Off (STO) function certified SIL 3 per IEC 61508 and PL e per ISO 13849-1, meeting the highest performance level for machine safety without an external safety relay.
Fieldbus connectivity via a 2-wire RS-485 physical interface supporting Modbus RTU and BACnet MS/TP at selectable baud rates (4800 to 76.8 kbit/s). Optional plug-in communication modules add PROFINET, Ethernet IP/Modbus TCP, or BACnet IP. Relay outputs R1 (1 NO + 1 NC) and R2/R3 (1 NO each) are rated for 100,000 electrical cycles.
