What the motor actually is
The 1FL2203-4AG01-0MC0 is a SIMOTICS S-1FL2 low-inertia servomotor from the 1FL2 family sized for the SINAMICS S200 drive platform — a 200 V 3AC class machine with 0.4 kW rated power, 1.27 Nm continuous torque at standstill and at rated speed, and a nominal speed of 3000 rpm. The 30 mm shaft height slots it into the small-frame end of the S200 line, where it pairs with a single-axis S200 drive in a compact control cabinet or machine submodule. Feedback is the AM21bit absolute encoder — single-turn, 21-bit resolution — which is the resolution ceiling for the velocity loop. That bit count matters because it sets how quietly the drive can hold position around a step: higher resolution closes the quantisation gap that otherwise shows up as crawl on a slow axis.
Shaft, brake, and what lives on the back of the housing
The motor ships with a plain shaft, tolerance N, and no holding brake — so any vertical-axis safety stop has to come from the drive's brake output or a downstream mechanism. The IP65 rating is achieved with the oil seal fitted, which means the seal is part of the assembly spec and the motor cannot be run dry-seal in oily or coolant mist environments without it. Wiring is via the hybrid connector on the back shell — power and signal share a single molded plug, so the cabinet-side cable is one assembly rather than two, and the connector keying is what enforces the correct power/encoder pinout at install. Packaging on a single piece ships at 315 x 182 x 172 mm, which is the bench-space you'll need to receive it on the shop floor before mounting.
Where this servo lands in the cabinet
The headline 0.4 kW at 3000 rpm with 1.27 Nm continuous tells the sizing story directly: it is built for high-acceleration, short-cycle motion — small indexing tables, light gantries, label applicators, electron microscope stages, and the kind of pick-and-place axes where the velocity-loop bandwidth is the limit, not the torque envelope. Match the load inertia to the motor's rotor inertia first; the S200 current loop is fast, but a 10:1 inertia mismatch will still ring through the position loop and force a notch filter that did not need to exist. Group Code R220 and Product Group X0DJ on the nameplate are the traceability slots the procurement system needs — R220 is the order-code family for this generation of 1FL2 servos, and X0DJ is the product group used in Siemens' internal logistics chain. Pull both into the BOM line so the receiving inspection can match the nameplate against the PO at goods-in.
Production posture and what the paperwork trail looks like
Product class C is build-to-order: the unit is produced to order and cannot be returned against credit, which sets the buying window — once the order is placed with Siemens it is committed, and any change in specification mid-build is a new order line rather than a revision. Lifecycle stage is listed as current and product status as Active, so the part is on Siemens' active catalogue with no announced successor on this seed.