Sections in the 2 kW band sit at an awkward edge: too heavy for the small convection-cooled builds, not yet heavy enough to justify the maintenance a fan brings. The 2XH22-2AF0 build of the SINAMICS G115D resolves that edge — 2.2 kW at 5.9 A rated (11.8 A HO) dissipated entirely by natural convection, making it the highest fanless rating in the family, with PROFINET and EtherNet/IP already onboard.

What does staying fanless at 2.2 kW actually buy?

The absence of the one component that ages. No fan means no filter mat, no intake dust path, no bearing to seize on a drive mounted within reach of belt dust — the 425 x 240 x 134 mm FSB housing stays sealed at IP65/66 / UL Type 4X with nothing to service beyond an occasional visual check. The 5.9 A LO rating carries 2.2 kW continuous with the 200%/3 s starting envelope in reserve, and the family does not cross into forced air until 4 kW.

Why the dual Ethernet protocols on a conveyor drive?

Because a 2.2 kW section often outlives the control system around it. PROFINET plugs it into the SIMATIC engineering environment with preconfigured function blocks; EtherNet/IP keeps the same drive reachable if the monitoring layer is Rockwell-based or changes vendor mid-life. Power enters through the sealed gland, the integrated 24 V PSU feeds local controls and sensors, and the C2 filter keeps emissions inside EN 61800-3 first-environment limits — one housing, no cabinet, no gateway.