The 6SL3520-0XM03-0AF0 is the AS-Interface variant of the SINAMICS G115D distributed drive at the 3 kW power level — the highest fanless rating in the G115D wall-mounted range. Delivering 15.4 A peak output in the FSB frame (425 × 180 × 134 mm), it powers longer conveyor sections while maintaining natural convection cooling with zero fan maintenance.

How does the AS-Interface variant differ from PROFINET and I/O Control?

The three G115D electronic module variants share identical power hardware. AS-Interface (AF0 suffix) connects the drive over the AS-i two-wire bus, carrying power and data on a single unshielded cable — ideal for conveyor installations with many distributed drives. The PROFINET variant (AB0) adds Ethernet-based real-time communication and PROFIsafe for network safety. The I/O Control variant (AA0) uses hardwired terminal I/O with no fieldbus.

What makes the XM03 3 kW different from lower-power G115D variants?

The XM03 uses the FSB frame — wider than FSA at 425 mm vs 380 mm — to accommodate the higher power electronics. Despite the increased power, the 3 kW model retains natural convection cooling with no fan. The frame measures 425 × 180 × 134 mm and weighs approximately 7.1 kg. The integrated braking circuit supports a minimum external resistance of 80 Ω, compared to 200 Ω for FSA frames, reflecting the higher braking energy at this power level.

What motors can the G115D at 3 kW drive?

The drive is preconfigured for SIMOGEAR 2KJ8 geared motors in frame sizes 71–132, available in IE3 asynchronous or IE4 synchronous reluctance variants. At 3 kW, it handles longer conveyor sections — main transport belts, merging zones, and incline conveyors — where smaller drives would require multiple units. The integrated brake control supports 180 V DC electromechanical brakes up to 0.8 A or direct 380–480 V AC brake coils.

What safety functions are integrated?

All G115D variants include Safe Torque Off (STO) at SIL 2 (IEC 61508) and PL d Cat 3 (EN ISO 13849-1). On the AS-Interface variant, STO is activated via fail-safe digital inputs (F-DI) — the drive's two configurable digital inputs can be assigned as F-DI channels. PROFIsafe is only available on the PROFINET variant (AB0).

Frequently Asked Questions

Can this drive operate without a control cabinet?

Yes. The G115D is designed for cabinet-free, wall-mounted installation. IP65 protection (plug-in connectors) or IP66 (cable gland entry) eliminates the need for a separate enclosure. The FSB frame uses natural convection cooling at 3 kW — no fan, no maintenance, even at this power level.

Does the XM03 have a cooling fan?

No. The 3 kW XM03 uses natural convection cooling — the highest fanless rating in the G115D wall-mounted range. Only the 4 kW XM04 requires an integrated fan. This makes the XM03 a strong choice for noise-sensitive or low-maintenance installations where 3 kW is sufficient.

What is the motor cable length limit for the 3 kW variant?

At the standard 4 kHz pulse frequency, motor cable length is up to 15 m at ambient temperatures up to 40°C. At higher pulse frequencies (6–16 kHz), the maximum cable length reduces to 5 m.