Definition and where this motor sits
Siemens 1FL2105-2AF01-1SB0 is a SIMOTICS S-1FL2 low-inertia servomotor from the 1FL2 family, sized for 1.5 kW mechanical output at 3000 rpm rated speed, with a 5 Nm stall and 4.6 Nm nominal torque envelope. The shaft height is 52 mm and the body is sealed to IP65 with an oil seal at the shaft exit. It is a class C configured servo: built to order with the listed options, not a stocked SKU. Group code R220 / product group X0DK is how it sits inside the Siemens ordering structure, useful for cross-referencing the BOM line against the configurator output.
Reading the nameplate for panel-side fit
Commissioning should pull the drive firmware version that matches the 1FL2 device family rather than a generic S200 image. Feedback is the 21-bit absolute AS21 single-turn encoder wired through the angular connector — cable routing must respect the connector bend radius, and the resolver-style alternative does not exist on this dash code. Holding brake is explicitly absent on this variant; an external safe-stop path or a brake-equipped sibling is required where the axis can free-fall on power loss.
Compliance and documentation posture
RoHS compliance since 01-01-18 and REACH Article 33 disclosure applies, so the shipping carton paperwork carries the standard Siemens substance-of-concern statement. Export classification is AL:N / ECCN:N — no dual-use paperwork is triggered for typical industrial shipments. Packaging is a single-piece shipper at 432 x 222 x 240 mm; the unit is built-to-order per class C, so a declaration pack and the configurator print should be matched to the nameplate serial on receipt before the motor goes into a panel.
Sourcing and spare-staging posture
Lifecycle is active, so the dash code is still factory-orderable rather than a clearance or last-time-buy line. The configured nature (class C, options baked in) means a replacement must be specified against the same configurator string — substituting on the basis of bare current and rpm alone is not safe. For sites running a multi-axis line where this motor is the bottleneck, the practical move is to hold one as a line-down spare matched to the existing SINAMICS S200 drive firmware revision.