What the 0.75 kW / 2.4 Nm rating buys you
The 1FK2104-5AF11-0MA0 is a SIMOTICS S-1FK2 HD synchronous servo in the 1FK2 family intended for the SINAMICS S210 drive line, listed with a standstill torque M0 of 2.4 Nm and a rated power PN of 0.75 kW at nN=3000 rpm on a 380-480 V supply, or PN 0.375 kW at nN=1500 rpm on 200-240 V. That dual-mains window matters: the same frame covers both the European 400 V class and the North-American 240 V class without a derate plate change, so one SKU can be held as the critical spare for two cabinet variants — the kind of consolidation that keeps a holding brake on the shelf rather than on back-order. The unit ships with an integrated holding brake, an IP65 degree of protection on the housing, a cylindrical shaft D19 x 40 mm, an absolute encoder AM22DQC (22-bit single-turn plus 12-bit multi-turn) and a rotatable M17 plug. For a maintenance-spares holding decision, that combination is the relevant one — brake engaged, position retained across a power cycle, encoder absolute so the axis does not have to home after every E-stop.
Series fit and OCC interface detail
As a 1FK2 servo for SINAMICS S210, this motor is wired through the One Cable Connection (OCC) interface on the rotatable M17 plug — power and the encoder feedback share a single cable run back to the drive, which simplifies the drag-chain on a linear axis and removes the encoder cable as a separately specifiable wear item. The encoder resolution (22-bit + 12-bit multi-turn) is enough that a vertical axis remembers its absolute position after a controlled stop without re-referencing on restart. IP65 on the housing with the M17 connector mated seals the motor against coolant splash and ingress typical of machine-tool and packaging-line environments; the cylindrical shaft with the D19 x 40 mm dimension drives a direct coupling or a servo-geared output without an intermediate adapter. Holding-brake sizing is matched to the 2.4 Nm M0 frame, so the brake is selected for the actual inertial load the motor accelerates, not oversized for marketing.
Lifecycle posture and compliance paperwork
RoHS compliance is documented since 01-07-06, REACH Art. 33 candidate-list information is provided on request, and export-control classification is AL:N / ECCN:N_CNDU — no special export licence gate for typical industrial destinations. The packaging is one piece per carton at 452 x 250 x 267 mm, group code R220, product group 9021, product class C (made-to-order, non-returnable), which matters for the procurement record and for any cross-border paperwork that traces the unit back to its manufacturing order.
Sourcing posture for the spare cabinet
Production units are quoted to order against the BOM line through independent industrial distribution; current pricing and confirmed availability are returned with the RFQ rather than quoted from a fixed shelf. For a critical-spare buy this is the standard posture on an active Siemens servo: no off-the-shelf immediacy claim, but a clean paper-trail path from RFQ to delivery on a motor that matches the SINAMICS S210 drive already in the cabinet.