What the 1FK2204-5AK00-1SB0 does on the line
The 1FK2204-5AK00-1SB0 is a SIMOTICS S-1FK2 CT servo motor with a standstill torque of 2.4 Nm, rated 0.57 kW at nN=6000 rpm on a 380-480 V bus and 0.75 kW at nN=3000 rpm on a 200-240 V bus, paired with SINAMICS S120 drives via DRIVE-CLiQ. It is built only for an 8 kHz / 62.5 µs current controller cycle, so the drive firmware must be set to that pulse frequency — running it at the 4 kHz default of older S120 commissioning profiles mis-maps the torque loop and the motor will fault on overspeed or IGBT protection during the first aggressive move. The shaft is D19x40 mm with a feather key, IP64 sealing on the body, an absolute single-turn 22-bit encoder (AS22DQC), and M17 connectors on both the power and DRIVE-CLiQ signal sides — meaning cable assemblies and mating connectors must be ordered to match the M17 form factor, not the M23 used on older 1FK7 frames.
BOM identifiers and order-class
Group code R220 and product group 9021 are the commercial IDs that appear on the packing slip and Siemens order acknowledgement — quote these when reconciling a Siemens PO line against the vendor invoice. Product class C applies: the unit is manufactured to order and cannot be reused, re-utilized, or returned against credit, so the BOM line should carry a firm requirement rather than a placeholder that gets swapped out after delivery.
Compliance and documentation carried by the part
Lifecycle stage is current and the line is active, so a spare order placed today ships into the regular Siemens production window rather than into an EOL last-time-buy envelope.