SIMOTICS S-1FK2 CT — compact synchronous servo for SINAMICS S120
The Siemens 1FK2204-5AF01-1SB0 is a member of the 1FK2 servomotor family, sized for direct tie-in to the SINAMICS S120 drive platform via the integrated DRIVE-CLiQ interface, which means the motor, encoder, and electronic nameplate hand off to the drive on first connection without manual parameter entry. Its continuous stall torque is M0 = 2.4 Nm, with a rated output of PN = 0.75 kW at nN = 3000 rpm on a 380–480 V supply and PN = 0.375 kW at nN = 1500 rpm on 200–240 V, so a single motor SKU covers both the 480 V three-phase line and the 230 V class common in smaller machines.
Encoder, feedback, and connector stack
Feedback is provided by an absolute single-turn 22-bit encoder (AS22DQC), giving 4,194,304 positions per revolution — sufficient resolution for point-to-point positioning and synchronous applications where the position must survive across power cycles without a homing routine. Both the power lead and the DRIVE-CLiQ cable use M17 connectors, so the field-side cable set stays consistent across the motor and feedback runs; this is the layout the SINAMICS S120 wiring diagrams assume when the motor is referenced as a 1FK2 with DRIVE-CLiQ.
Mechanical envelope and environment
The shaft is D19 × 40 mm with a feather key, which sets the coupling and pulley selection on the driven side; the 19 mm diameter is the spec that drives the matching clamp-style or backlash-free coupling bore, not the motor face. IP65 sealing on the housing makes the motor suitable for plant-floor and machine-internal mounting where coolant mist and dust are present, but not for direct washdown or outdoor exposure — the IP rating covers the body and cable entries, not a submerged duty.
Production status and order class
Siemens lists this motor in an active lifecycle state, with product class C indicating it is produced to order rather than stocked as a catalog item, so typical lead time tracks the factory build window rather than distributor shelf stock. RoHS compliance has been in force since 01-07-06 and REACH Art. 33 information is supplied with the product, with no export-control flag (AL:N / ECCN:N_CNDU), which keeps cross-border shipments inside the standard industrial-automation documentation set.
Packaging and how it ships
Each unit ships as a single piece in a 452 × 250 × 267 mm pack, with a single-piece order quantity, which is what the BOM line should reflect when this SKU is added to a machine build or a service spare list.