The Siemens 6SL3220-1YD46-0UB0 is a SINAMICS G120XA AC drive (variable-frequency drive) sized for 110.00 kW at 400 V on the IEC low-overload rating, with a 201.00 A rated output current at 400 V and 205.00 A at 380 V — meaning it absorbs a 110 kW motor load on the constant-torque/low-overload duty and still has headroom into the 222.00 A maximum output on transient peaks. Input is 3-phase 380–440 V with a +10 % / -20 % tolerance and 47–63 Hz line frequency, so the drive rides weak or unstable mains without tripping on undervoltage — the same envelope that lets it drop onto a generator-fed or heavily-loaded plant bus.
Output range and switching for hot-strip mill duty
Output frequency reaches 0–550 Hz on V/f control and 0–240 Hz on vector control, with a 2 kHz default pulse frequency; the vector band is the one that holds strip tension on a mill, while the wider V/f band covers fans, pumps and high-speed compressor work where closed-loop torque is not the limiter. Efficiency lists 0.98 with 2.270 kW power loss and a 0.75–0.93 power factor (cos φ 0.99 offset factor) — in panel terms the 2.27 kW heat load is what the cabinet climate control has to evacuate, and the 0.98 figure is what keeps the drive inside the SINAMICS G120XA efficiency class when fed from a moderately distorted bus.
In the panel and on the BOM line
At 110 kW on the 400 V low-overload rating, the 6SL3220-1YD46-0UB0 covers the heavy-industrial drive tier that sits above the small-frame G120 units and below the larger G120XA frames — pumps, compressors, conveyors, extruders and the main roll-table drives where the 222.00 A peak handles the start-up surge without forcing the spec to the next frame size.