Sizing the 1FL2104 against the drive envelope
The 1FL2104-4AF10-1SC0 is a SIMOTICS S-1FL2 low-inertia servomotor sized at 1 kW rated power (Pn) on a 400 V 3AC supply, with rated speed 3000 rpm and continuous stall torque identical to rated torque at 3.2 Nm (M0 = Mn = 3.2 Nm) — meaning the motor delivers its full continuous torque all the way from standstill to rated speed without a torque-fold region, which keeps the axis sizing calculation to Pn alone rather than to a separate intermittent rating. It belongs to the 1FL2 family built specifically to pair with the SINAMICS S200 drive line, so connector pinout, encoder protocol, and brake wiring are matched at the system level — substituting a motor from a different Siemens family into an S200 commissioning typically means re-mapping the telegram, not just rewiring the power side.
Mechanical envelope for panel and machine integration
Shaft height 40 mm with a keyed shaft (tolerance N) and an integrated holding brake defines a flange-mount servomotor in the small-frame class — typical fit is a compact machine axis such as a tabletop indexing table, small gantry, or pick-and-place Z-axis where the 3.2 Nm continuous figure meets the load profile without oversizing the gearbox. Feedback is a 21-bit encoder terminated through a hybrid connector — single-cable power plus feedback plus brake on one hybrid cordset rather than separate power and signal leads, which simplifies the cable duct and reduces the gland-plate fill on the drive cabinet. Protection class IP54 without an oil seal puts this motor in a dry, dust-splash duty envelope; it is not the variant to specify for coolant-splash zones or wet-process washdown — for those duty points the 1FL2 line offers IP65/IP67 options with a sealing ring, which must be confirmed against the application before specifying.
Lifecycle, compliance, and order classification
The part carries product class C — built to order, non-returnable, non-reusable against credit — so order quantity, variant codes, and the matched SINAMICS S200 drive firmware version should be frozen at the BOM sign-off; mid-build changes typically restart the production clock. Compliance documentation covers RoHS conformity since 01-01-18 and the REACH Art. 33 duty-to-inform obligation per the current candidate list; export control is AL:N / ECCN:N, which means no special licence gate for the standard cross-border shipment paths.