1.27 Nm / 0.4 kW S-1FK2 HD on the SINAMICS S210 bus
The 1FK2104-4AF00-1SA0 sits in the 1FK2 high-dynamic family and is built to plug into a SINAMICS S210 drive — the M0 = 1.27 Nm and PN = 0.4 kW at nN = 3000 rpm on a 380–480 V link, with a derated 0.2 kW at nN = 1500 rpm on a 200–240 V link, define the operating envelope an integrator has to wire into the cabinet. Holding torque at standstill is what matters for indexing and short-stroke positioning; the 1.27 Nm figure is the constant the S210 current loop regulates against, so any sizing math should compare that number to the load inertia reflected back through the gearbox rather than the 0.4 kW nameplate alone.
Encoder, shaft, and the connector an installer actually meets
Feedback is the absolute single-turn 22-bit encoder AS22DQC over the OCC interface — 22-bit single-turn means absolute position within one mechanical revolution to roughly 0.0003° of resolution, no battery-backed multi-turn retention needed for this code variant. The shaft is D19 × 40 mm with feather key, and the M17 power/feedback plug is rotatable — useful when the cable entry has to land in a tight cabinet corner without forcing a 90° turn back through the gland. IP64 on the body means the motor is dust-tight and resists splashed water from any direction; it is not rated for direct washdown or submerged service, so mount orientation away from coolant jets and food-grade cleaning is the right read.
Lifecycle, product class, and what the order code confirms
Lifecycle stage is marked current — production-class C per the listed ordering rule, meaning each unit is built to order and is not a stocked, returnable commodity; spares should be quoted against an RFQ rather than pulled from a warehouse shelf. The order string carries Group Code R220 inside Product Group 9021, so a Siemens SIMATIC/SINAMICS buyer matching the line back into the legacy group/class taxonomy can reconcile it against existing BOM dictionaries without remapping. Export Control lists AL: N / ECCN: N_CNDU, which means no export license is required for shipment under the stated ECCN — paperwork still travels with the unit but the classification itself does not gate the order.