What this motor actually delivers in the loop
The 1FK2104-6AF10-2SB0 is a SIMOTICS S-1FK2 HD servomotor from the 1FK2 family that drops straight onto a SINAMICS S120 drive via the DRIVE-CLiQ plug — a short-circuit digital feedback path that closes the current, speed and position loops with the resolver data on the same cable as the 24 V electronics power. Standstill torque M0 is 3.2 Nm and the rated point is PN = 1 kW at nN = 3000 rpm on a 380–480 V bus, with a secondary 0.5 kW point at 1500 rpm on 200–240 V — so the same winding profile covers both the European 400 V and the North American 230 V class without a rewire. Holding brake is fitted as standard, which removes the external brake clamp from the axis design and lets the controller drop the axis into a safe state on STO without back-driving the load during a controlled stop.
Encoder, shaft and the panel-side wiring
Feedback is an absolute encoder single-turn 22-bit, designated AS22DQC — 4 million counts per turn gives sub-arc-minute resolution at the motor shaft before any gearbox, which is what keeps the following error small on a contour move and the surface finish repeatable shot after shot. The shaft is a cylindrical D14 × 30 mm stub in IP64 housing, paired with an M17 DRIVE-CLiQ feedback connector and a separate size M17 power connector — the twin-connector layout keeps the signal path isolated from the motor cable so the encoder does not sit in the switching noise floor of the PWM stage.
Compliance, lifecycle, and what the BOM line is committing to
Group code R220 and product group 9021 are the Siemens commercial classification keys for this line — the group code is the SAP-side ordering reference and the product group is the catalogue path used by the manufacturer's configurator.
Where the order code lands in the supplier chain
For a sourcing desk that needs this specific 1FK2104-6AF10-2SB0 on the BOM, the cleanest path is to specify the configuration in the RFQ — the built-to-order class means the lead-time clock starts at order acknowledgment, and pricing is confirmed against the same configurator output, not against generic stock listings.