The 6SL3520-2XB45-5AF0 is the PROFINET-equipped 4-series variant of the 5.5 kW FSC G115D with B-connector. At 13.2 A HO with 200% 3 s overload, it handles mid-range conveyor sections on PROFINET-controlled lines — the drive appears as a device in TIA Portal, safety runs over PROFIsafe via the M12 D-coded 2-port switch, and line-topology daisy-chaining reduces Ethernet cabling along the conveyor. The 2XB45 4-series designation (parallel to 0XB45/1XB45) identifies a catalog sub-family; the 425 × 180 × 169 mm FSC power stage is identical to the standard 2XB05.