The 6SL3520-0XM01-1AF0 is a 1.1 kW SINAMICS G115D distributed frequency converter in the FSA frame size. Sitting between the 0.75 kW and 1.5 kW FSA models in the G115D power range, it delivers 3.1 A of continuous output current — enough for a 1.1 kW IEC 80-frame three-phase motor with headroom. Like every FSA drive, it uses fully passive cooling through the sealed aluminum enclosure.

Where does 1.1 kW fit in the G115D FSA range?

The FSA range spans 0.37 kW to 1.5 kW. The 1.1 kW model is the mid-to-upper option — more power than the 0.37/0.55/0.75 kW drives for conveyors that carry heavier product or run longer accumulation sections, but without the full 1.5 kW output of the range-topping model. For a typical roller conveyor carrying packaged goods, 1.1 kW drives a section roughly 8–12 m long depending on product weight and speed. If the conveyor is lightly loaded or shorter, a 0.75 kW FSA may be sufficient and more economical. If the conveyor runs near-continuously under load or is positioned on an incline, the 1.5 kW FSA provides extra thermal headroom.

What does passive cooling mean for maintenance?

Passive cooling means the drive has no fan — all heat generated by the power electronics (approximately 50 W at rated load for the 1.1 kW model) is conducted to the aluminum enclosure and dissipated to the ambient air through natural convection. For the maintenance team, this means: no fan to replace, no filter to clean, no ventilation openings to clog with dust or fiber, and no moving parts to fail mechanically. In textile, wood-processing, or food-packaging environments where airborne fibers and dust are constant, the sealed passive-cooling design is a measurable reliability advantage over fan-cooled drives that pull contaminated air through the enclosure. The trade-off is thermal: the drive cannot sustain the same current density as a forced-air design. For 1.1 kW conveyor duty, this is rarely a limiting factor.

Frequently Asked Questions

What is the difference between this AF0 model and the AA0/AB0 1.1 kW variants?

The AF0, AA0, and AB0 suffix codes identify different I/O interface configurations on the drive's control board. All three share the same 1.1 kW, 3.1 A, 380–480 V electrical rating and FSA mechanical package. The differences are in the terminal-level wiring of digital inputs, digital outputs, and any analog channels. For PROFINET-controlled conveyors where the drive receives speed commands and returns diagnostics over the network, the I/O configuration is usually not the deciding factor — any of the three will work. The operating instructions document the terminal assignment for each suffix.

Can the 1.1 kW FSA be used with a single-phase supply?

No. The G115D requires a three-phase 380–480 V AC supply. It cannot operate from a single-phase input. If your installation only has a single-phase supply available, you would need a different drive series — the SINAMICS V20 or G120C offer single-phase input variants in the 1.1 kW power range, though they are designed for control-cabinet mounting rather than distributed field installation.