Headline rating and what it drives on the line
The 6SL3220-3YE18-0AF0 is a 3 kW / 6.9 A SINAMICS G120X frequency converter sitting in the 380–480 V three-phase input band; at that current it matches a 3 kW motor class squarely and is the figure you size against on the BOM line, not the higher sizing-tier siblings.
Control side and motor-side output
It comes with PROFINET and EtherNet/IP on-board, so on a Siemens-centric line the controller clicks into the same fieldbus without a separate comms card; for non-Siemens PLCs it drops onto EtherNet/IP without extra hardware. The output spans 0–550 Hz with a 4 kHz switching ceiling, and the input accepts 47–63 Hz, so the drive can ride a generator or a marginal mains without dropping out — a useful margin for fan, pump, and compressor loads where skip and ride-through matter.
Footprint, wiring, and panel integration
The body is 73 mm wide × 218 mm deep × 232 mm tall, screw-terminal wiring, and IP20 — this is a cabinet-mounted frame, not a field-mount unit, so it sits inside the panel with the line/load filter and breaker ahead of it. The relay output is rated 30 VDC at 5 A, enough to release a contactor or drive a remote trip coil; the digital output is the relay channel, so plan the I/O map around one switching contact rather than a transistor-type output.