Form factor and pairing
The 1FL2203-4AF11-0SC0 is a SIMOTICS S-1FL2 low-inertia servo in shaft height 30 mm, supplied as a single piece in packaging of 315 × 182 × 172 mm, built for direct pairing with the SINAMICS S200 drive family. It is the standard 400 V 3AC variant at 0.4 kW rated, 3000 rpm, with stall and rated torque both 1.27 Nm — meaning the motor holds constant torque across the rated speed point rather than tapering. The mechanical side is set up for cabinet integration rather than field mounting: plain shaft, tolerance N, hybrid connector for power and feedback, IP65 protection class with oil seal, and an integrated holding brake — the brake is the usual safety hold for the vertical axis or any load that must not drift on drive disable.
Ratings read for the BOM line
Pn = 0.4 kW at Nn = 3000 rpm is a small-frame servo — typical fit for auxiliary axes, small-format conveyors, label feeders, indexing tables, and the light-load axes that surround a primary machine, not the main spindle. The 1.27 Nm stall figure is what the holding brake has to lock; verify the brake's static holding torque is rated at or above 1.27 Nm before specifying the brake as a safety hold on a vertical axis. The 21-bit absolute encoder built into this variant gives single-turn resolution suited to commissioning absolute-position homing without an external battery box on every axis, simplifying the cabinet wiring diagram and the fieldbus slice on the SINAMICS S200.
The motor has been RoHS-compliant since 01-01-2018 and ships with REACH Art. 33 disclosure on the candidate list — the kind of paperwork a pharmaceutical or medical assembly line can file into the BOM qualification pack without further testing. There is no export-control flag on the line item (AL: N / ECCN: N), so the part crosses borders under standard commercial-invoice routing rather than dual-use paperwork.
Sourcing posture
Internal catalog identifiers (Group Code R220, Product Group X0DJ) should be carried onto the PO line so the request reaches the correct Siemens ordering channel without a SKU re-key.