The SINAMICS G115D 6SL3520-0XH02-2AB0 is the 2.2 kW wall-mounted distributed drive — the entry point to the FSB frame in the SINAMICS G115D series. Stepping up from the FSA-class 1.5 kW, the FSB frame provides the larger housing needed for the 2.2 kW power stage while still operating fanless on natural convection at this power level. Rated at 5.9 A output current with 200% overload for 3 seconds, it covers medium-duty roller conveyors, belt sections up to several meters, and zone accumulation zones where 1.5 kW reaches its limit. PROFINET with PROFIsafe provides STO over Ethernet without dedicated safety wiring.

Why is the 2.2 kW FSB still fanless?

At 2.2 kW, heat loss from the power stage remains within the FSB aluminum housing passive dissipation capacity. Natural convection through the IP65-sealed surface is sufficient at up to 40 °C ambient — the same cooling principle as the smaller FSA frame. The fanless design means zero fan maintenance, silent operation, and no ventilation openings to protect in dusty conveyor environments. The 3 kW variant (6SL3520-0XH03-0AB0) is also fanless within the same FSB frame — only the 4 kW FSB requires the integrated fan. For conveyor system designers, this means 2.2 kW and 3 kW FSB drives share the same maintenance profile as the FSA range.

What motors and gearboxes can it drive?

Direct mounting to SIMOGEAR 2KJ8 geared motors in IE3 (asynchronous) or IE4 (synchronous reluctance) efficiency classes. Integrated 400 V AC brake control, encoderless vector control with V/f and sensorless modes, and dual-protocol PROFINET/EtherNet/IP on a single interface. The FSB mounting footprint accommodates the larger motor frame sizes typical at 2.2 kW while maintaining the same motor connector (Q8/0) and M12 signal interface used across the entire SINAMICS G115D range.

Frequently Asked Questions

When should I choose 2.2 kW over 1.5 kW FSA?

Step up from 1.5 kW FSA to 2.2 kW FSB when the driven conveyor section exceeds 1.5 kW mechanical demand — typically belt sections longer than 5–8 meters, roller beds with higher product accumulation weight, or sections with incline. The FSB frame is wider (425 mm vs. 380 mm FSA) — verify mounting bracket space before selecting.

Is the 2.2 kW FSB compatible with the same SIMOGEAR motors as FSA?

Yes — the SIMOGEAR 2KJ8 geared motor family spans all SINAMICS G115D power ratings. The same motor frame sizes used with FSA at 0.55–1.5 kW are also available at 2.2 kW with appropriate gearing. The drive-to-motor mounting interface is identical across the G115D range.