0.75 kW CT motor on a 22-bit singleturn encoder
The 1FK2204-5AF11-0SB0 is a SIMOTICS S-1FK2 CT servo motor from the 1FK2 family intended for SINAMICS S120 drives, ordered as a single piece built-to-order per product class C and not returnable for credit. Its continuous rating is PN = 0.75 kW at nN = 3000 rpm on a 380-480 V supply, with a secondary rating of PN = 0.375 kW at nN = 1500 rpm on a 200-240 V supply — the same stator running at half speed on a 230 V class bus, so a panel built for 200-240 V and one built for 380-480 V can both land on this frame. Stall torque M0 = 2.4 Nm and the holding brake are sized together for a horizontal axis that needs to hold position on loss of enable — the brake's role is to stop shaft creep, not to brake the load dynamically, which is the usual confusion at commissioning.
Feedback and connection to the S120
Feedback is the absolute encoder single-turn 22-bit (AS22DQC) — 4.19 million counts per turn gives sub-arc-minute resolution on the commutation angle, which matters at the 3000 rpm top speed where electrical and mechanical frequencies diverge. Both the DRIVE-CLiQ plug and the power connector are size M17, a common pairing in the 1FK2 range so the cabinet gland plate keeps a single cut-out pattern; mixing an M17 DRIVE-CLiQ with an M23 power lead is the cross-wiring error that surfaces during FAT when the motor refuses to identify.
Mechanical envelope and sealing
The shaft is cylindrical D19 x 40 mm without keyway, so coupling is via a clamping or shrink-fit element rather than a keyed boss — a keyed counterpart would need a different order code suffix in this family. Degree of protection IP65 on the motor body is the right rating for food-and-bev splash zones and machine-tool coolant exposure, but the connector sealing only holds when the mating cordset is also rated and torqued; IP65 is a system figure, not a bare-motor figure, and the panel-side acceptance test should be a powered dry-cycle, not a visual.
Lifecycle status and ordering posture
Lifecycle stage reads current and product status Active — the part is in production and the order code is a live catalogue position in the 1FK2 family. Product class C makes the line built-to-order: a 452 x 250 x 267 mm single-piece pack ships from the factory configured for the specific order, which is why the part carries no return-for-credit path — any return claim has to be raised against a verified defect on receipt, not against a change of mind. RoHS compliance is declared since 01-07-06 and REACH Art. 33 candidate-list information is supplied with the delivery, which covers the documentation most EU end-customer audit packs ask for; any UL or IEC motor listing beyond the manufacturer declaration would come from the motor's nameplate ratings sheet, not the catalogue line.
Sourcing posture and RMA framing
Before any return is raised on this code, the wiring should be checked first: a 1FK2 that fails to identify on the S120 is more often a mis-pinned DRIVE-CLiQ or a 24 V aux shortfall than a defective encoder, and the original packaging should be kept until the motor has run a verified load cycle — those two steps resolve most of the 'defective on arrival' cases that actually aren't.