At 1.1 kW (3.1 A rated, 6.2 A overload), the 6SL3520-0XA21-1AF0 occupies the most frequently specified power rating in the G115D FSA range — the sweet spot between the 0.75 kW workhorse and the 1.5 kW FSA ceiling. The 3.1 A continuous output covers the largest installed base of zone-roller conveyor motors in distribution and logistics, with enough overload headroom (200% for 3 s) to handle the locked-rotor inrush of a fully loaded roller bed.

Why is 1.1 kW the default choice for zone-roller conveyors?

A standard 3–5 meter zone-roller conveyor section driven by a 1.1 kW geared motor covers the vast majority of e-commerce and parcel-handling applications. The 0.75 kW drive works for lighter product weights and shorter zones, but 1.1 kW provides margin for heavier items, faster line speeds, and roller friction buildup over time — without the cost and size increase of stepping to 1.5 kW. At 53.6 W power loss, natural convection in the 380 × 156 × 129 mm FSA envelope is sufficient — no fan, silent operation, zero fan-related service. The 0XA21 catalog code maps to the same G115D hardware as the 0XA61 and 1XE41 systems — identical drive, different commercial ordering code.

Key specifications

The drive operates from a 3 AC 380–480 V supply (45–66 Hz) with an output frequency range of 0–550 Hz. High-overload capability delivers 200% for 3 seconds and 150% for 57 seconds. The 350 Ω integrated braking resistor (10 W continuous) supports dynamic braking. Integrated PROFINET and Ethernet IP interfaces connect directly to SIMATIC controllers. The built-in C2 RFI filter meets EN 61800-3 Category C2 conducted emission limits.