The ATV630U40N4 is a variable speed drive from the Altivar Process ATV600 series, designed to run asynchronous and synchronous motors in process and utility applications. It's rated for a 380…480 V supply and delivers 9.3 A continuous output in normal duty at 4 kHz switching, or 7.2 A in heavy duty – that's 4 kW normal / 3 kW heavy motor power. Out here on the lube route, that kind of headroom means the drive can handle a slightly overloaded pump without tripping, as long as the duty cycle stays within the heavy-duty envelope.
Heavy vs normal duty – what that means for sourcing
The difference between normal duty (9.3 A at 4 kHz) and heavy duty (7.2 A at 4 kHz) isn't just a spec sheet number – it's the practical limit for continuous operation under a constant torque load. If you're freezing a BOM for a conveyor with a steady load, the heavy-duty current is your real-world ceiling. The normal-duty figure assumes a more forgiving load profile, like a fan or centrifugal pump. For procurement, if the motor nameplate FLA sits between 7.2 and 9.3 A, you need to confirm the duty class before committing the order.
Integration notes – slots, cooling, and mounting
Wall-mount the unit vertically within ±10°, and allow forced convection to do its job – the drive needs about 38 m³/h of cooling air. Slot A takes communication modules: Profibus DP V1, PROFINET, DeviceNet, Modbus TCP/EtherNet/IP, CANopen, or BACnet MS/TP. Slot A/B also accepts digital/analog I/O and relay extension cards. For a controls integrator, that means you can pick the fieldbus slice without changing the base drive. The STO safety function is SIL 3 rated, so you can feed safe torque off through a safety PLC without an external relay. Shock rated at 15 gn for 11 ms – tough enough for the route.
