The 6SL3520-2XA65-5AA0 is a 5.5 kW SINAMICS G115D FSC distributed drive that uses I/O Control — the simplest communication variant in the G115D range. Start/stop, direction, and speed setpoint are wired directly to digital inputs. No fieldbus configuration, no network addressing, no switch management. An electrician can commission it with a screwdriver and the default macro settings. The FSC power stage delivers 13.2 A HO (26.4 A peak) with integrated fan cooling in the 425 × 180 × 169 mm IP65 enclosure.

When is I/O Control the right choice over fieldbus variants?

I/O Control (AA0 suffix) uses hardwired digital I/O for all control signals — run forward, run reverse, fixed speed selection, and single-channel STO via a fail-safe digital input. There is no PROFINET, no EtherNet/IP, and no PROFIsafe. For standalone conveyor zones with a simple start/stop sequence and an emergency-stop circuit, this eliminates the cost and complexity of network infrastructure. The trade-off: no remote diagnostics, no parameter changes over the network, and no coordinated multi-drive motion over PROFINET.

How does the FSC platform support sustained 5.5 kW operation?

The FSC frame carries higher-rated IGBTs than the same-footprint FSB — 13.2 A HO rated vs 10.2 A at 4 kW FSB. An integrated temperature-proportional fan provides forced convection. At 7.85 kg, the FSC is only 330 g heavier than the 4 kW fan-cooled FSB despite the 37% higher current rating. The enclosure seals to IP65/IP66 with the fan integrated behind the heatsink — no external fan to protect from dust or washdown.