Where does the 2.2 kW step sit in the G115D range?

The G115D spans 0.37 kW to 7.5 kW, and 2.2 kW is the doorway into the FSB frame. Below it, the FSA drives cap out at 1.5 kW and 4.1 A continuous; above it, the FSB covers 3 kW and 4 kW. A section that started on a 1.5 kW drive and keeps stalling on starts has exactly two honest options: stay in FSA at the ceiling, or step to 2.2 kW for the headroom. This drive delivers 5.9 A continuous and 11.8 A for 3 s at 200% overload - roughly 45 percent more continuous current than the largest FSA - while remaining fanless in the 425x180x134 mm FSB housing, IP65/66, on the machine frame.

What does AS-Interface change for the 2.2 kW section?

With AS-Interface the drive is a bus slave, not a stand-alone terminal block: it links to the line through a single M12 connector, the AS-i master polls it alongside the other slaves on that run, and the address is assigned at commissioning from the master or a hand-held addressing unit instead of from a project file. The four standard digital inputs and the fail-safe digital input stay available for local sensors and STO wiring, so the section keeps its own interlocks without its own network segment. The integrated Category C2 filter keeps external EMC hardware off the wiring, and the 175 ohm braking resistor (10 W continuous, 100 W peak) absorbs stop energy for short deceleration ramps. If the machine later moves to PROFINET, the AF0 variant carries the same 2.2 kW fanless hardware with PROFIsafe; the AB0 variant drops the bus entirely and runs the same hardware on I/O Control.