The 6SL3520-0XH60-3AA0 is the I/O Control variant of the SINAMICS G115D distributed drive platform — the 0.37 kW entry point in the FSA frame. With 2.6 A peak output, it powers light conveyor sections with hardwired terminal control — no fieldbus, no network setup, just direct I/O.

What makes the I/O Control variant different from PROFINET and AS-Interface?

The three G115D electronic module variants share identical power hardware. The I/O Control variant (AA0 suffix) uses 4 programmable digital inputs and 2 configurable digital I/O channels for direct hardwired control. There is no fieldbus — the drive starts and stops on terminal signals. This suits standalone conveyor sections, replacement of contactor-controlled motors, or installations where adding a network node adds complexity without benefit. The PROFINET variant (AB0) adds Ethernet communication and PROFIsafe. The AS-Interface variant (AF0) uses the AS-i bus for networked distributed control.

What motors can the G115D XH60 drive?

The drive is preconfigured for SIMOGEAR 2KJ8 geared motors in frame sizes 71–132, available in IE3 asynchronous or IE4 synchronous reluctance variants. 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 available on the I/O Control variant?

Safe Torque Off (STO) is activated via the fail-safe digital inputs (F-DI) — two of the drive's four digital inputs can be configured as F-DI channels, achieving SIL 2 (IEC 61508) and PL d Cat 3 (EN ISO 13849-1). PROFIsafe requires 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 directly on the machine frame. IP65 protection eliminates the need for a separate enclosure. The FSA frame measures 380 × 216 × 129 mm with natural convection cooling.

Can the I/O Control variant be upgraded to fieldbus later?

No. The communication interface is hardware-defined — AA0 (I/O Control), AB0 (PROFINET), and AF0 (AS-Interface) are distinct products. To add fieldbus capability, replace the drive with the corresponding variant.

What is the difference between XH60 and XN00 frame codes?

Both XH60 and XN00 use the same FSA physical frame (380 × 216 × 129 mm) with natural convection cooling. Physical dimensions, mounting, and thermal characteristics are identical. The designation difference reflects product generation — XH60 is the earlier designation, while XN00 is the current production code.