The 6SL3520-0XH20-5AA0 is the 0.55 kW I/O Control G115D in the FSA frame — one step up from the 0.37 kW entry point, with hardwired digital and analog I/O for conveyor zones that need slightly more torque without adding a fieldbus. It delivers 1.7 A rated (3.4 A overload) from a 380–480 V 3-phase supply.

0.55 kW I/O Control — what it covers that 0.37 kW does not

The 0.55 kW (XH20-5) provides roughly 50% more continuous torque than the 0.37 kW (XH20-3) — enough for roller conveyors in the 1–1.5 m zone-width range, light incline belt segments, and accumulation zones where occasional multiple-package stacking occurs. The I/O Control AA0 interface keeps wiring simple: digital inputs for start/stop and direction, an analog input (0–10 V or 4–20 mA) for speed reference, and digital outputs for fault and running status. For conveyor OEMs building self-contained modules with local control, this variant eliminates the fieldbus gateway and network configuration — the electrician wires the I/O terminals directly from the local sensor or pushbutton station.

FSA frame: compact, fanless, IP65

The FSA enclosure (380 × 216 × 129 mm, 4.9 kg) is the smallest G115D frame — natural convection cooling, no fan, IP65 sealing for dust and water-jet environments. At 0.55 kW, the FSA operates well within its thermal limits (the frame supports up to 1.5 kW with passive cooling). The 24 V DC control supply draws approximately 250 mA. The drive mounts directly on the machine frame or motor flange, eliminating control cabinet space and reducing motor cable length from meters to centimeters.

XH20-5: current catalog FSA, 0XH series

XH20-5 is the current catalog designation for the 0.55 kW FSA in the 0XH series. The 0XH series at this power level includes I/O Control (AA0) and AS-Interface (AF0) variants. For PROFINET at 0.55 kW, see the 1XA series (1XA00-5AB0). The XH20-5 also exists in earlier catalog designations — all share the same FSA hardware platform.

Frequently Asked Questions

How is the speed setpoint given 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.

Can I add a fieldbus later?

No. The communication interface is factory-configured hardware. For AS-Interface at 0.55 kW, select XH20-5AF0. For PROFINET at 0.55 kW, select 1XA00-5AB0 from the 1XA series.

Is this compatible with the 0.55 kW AS-Interface variant?

Mechanically and electrically, yes — both deliver 0.55 kW / 1.7 A rated from the same FSA hardware platform. The difference is the communication interface only.