What this servo brings to a SINAMICS S120 axis
The 1FK2204-5AF00-2MB0 is a SIMOTICS S-1FK2 CT synchronous servo from the Siemens 1FK2 product family built to run on a SINAMICS S120 drive, with the hold torque / power curve sitting at M0 = 2.4 Nm and PN = 0.75 kW when fed from a 380-480 V bus at nN = 3000 rpm. On a 200-240 V feed the same motor delivers PN = 0.375 kW at nN = 1500 rpm, so the same order code spans the 230 V and 400 V drive classes without a frame change — confirm which bus the cabinet supplies before sizing the continuous shaft load.
Encoder, connector, and the shaft that drops into the gearbox
Feedback is a 22-bit single-turn plus 12-bit multi-turn absolute encoder (AM22DQC) routed through a DRIVE-CLiQ M17 plug, which means the motor reports position over the same digital cable the SINAMICS S120 uses for auto-identification — no separate encoder cable or batteries to manage. The shaft is a plain cylindrical D14 x 30 mm stub in an IP64 housing, with a power connector sized M17; IP64 is dust-tight and proof against light splashing, which suits a panel-mounted cabinet or an enclosure interior rather than a washdown cell — if the axis sits in a food-grade or outdoor environment, step up to the IP65/IP67 motor variant for the same frame.
Compliance documentation on the file
Export classification is AL:N / ECCN:N_CNDU, so this part ships without a per-order export licence on the routes Siemens lists; custody paperwork for the consignment should still record the ECCN against the commercial invoice for downstream customs filings.
Active production and how to source it
Administrative fields for the purchase order and warranty registration are Group Code R220, Product Group 9021, Quantity Unit 1 Piece, with one motor per shipping carton and packaging dimensions 452 x 250 x 267 mm; these values feed straight into the Siemens configurator and the vendor-master sync, so the buyer should mirror them on the PO to keep the warranty trail clean.