The 6SL3520-0XN03-0AA0 is the 3 kW I/O Control G115D in the fanless FSB frame — the highest-power G115D variant that operates with neither a fieldbus network nor a cooling fan. It delivers 7.7 A rated (15.4 A overload) from a 380–480 V 3-phase supply, controlled entirely through hardwired digital and analog I/O terminals.

3 kW I/O Control — the zero-overhead distributed drive

At 3 kW, this drive handles conveyor segments that move heavier product flows — merge units feeding sortation systems, incline belts in distribution centers, accumulation zones with multiple-pallet loads. The I/O Control (AA0) interface receives start/stop, direction, and fixed-speed preset selection via digital inputs, with speed reference from a 0–10 V or 4–20 mA analog input. STO (Safe Torque Off) is wired to a dedicated F-DI terminal. No fieldbus configuration. No network hardware at the drive. No Ethernet switch port consumed. For plants where the control philosophy is hardwired — or for standalone conveyor modules shipped as self-contained OEM units — the AA0 variant delivers the mechanical benefits of distributed drive architecture (machine-mounted, no control cabinet, short motor cables) without demanding a network infrastructure change.

3 kW fanless: the end of the passive-cooling road

The fanless FSB at 3 kW (425 × 180 × 134 mm, 7.12 kg) is the last G115D rating where natural convection suffices. At 4 kW, the same FSB enclosure adds a fan and 35 mm of depth. Staying at 3 kW means no fan inspection, no fan replacement, no fan-related downtime. For conveyor systems in dusty environments (packaging, wood processing, bulk material handling), the absence of a fan eliminates the primary dust-ingestion path. The 24 V DC control supply draws 250–290 mA — budget this per drive for multi-zone conveyor control panels.

XN03: intermediate-generation code, current-generation hardware

XN03 is the intermediate catalog designation for the 3 kW fanless FSB — same hardware as the earlier XM03 and the current XH23. All three share identical electrical ratings (7.7 A / 15.4 A), enclosure dimensions (425 × 180 × 134 mm), and communication interface options. When ordering a replacement, XH23-0AA0 is the current-catalog equivalent.

Frequently Asked Questions

How is the speed setpoint adjusted on the I/O Control variant?

Via a 0–10 V analog input (external potentiometer or PLC analog output), 4–20 mA current loop, or fixed-speed presets selected through digital input combinations. The drive is commissioned via the SINAMICS Smart Access keypad or USB interface; the keypad is not required for runtime operation.

Can I upgrade this drive to PROFINET or AS-Interface later?

No — the communication interface is factory-configured hardware. AA0 (I/O Control), AF0 (AS-Interface), and AB0 (PROFINET) are separate hardware variants. Select the variant that matches your intended control architecture at time of purchase.

Is a separate 24 V DC supply required?

Yes — all G115D variants require 24 V DC for control electronics. The fanless FSB draws 250–290 mA. The 380–480 V 3-phase input powers the motor output stage only.