The 6SL3520-0XM04-0AB0 is the PROFINET/EtherNet/IP variant of the SINAMICS G115D at 4 kW — the largest power rating in the G115D wall-mounted range. Delivering 20.4 A peak output in the FSB frame with integrated fan cooling, it powers the heaviest conveyor sections with real-time Ethernet communication and PROFIsafe network safety.

Why does the 4 kW XM04 have a fan while the 3 kW XM03 does not?

At 4 kW, power dissipation exceeds natural convection capacity. An integrated fan provides forced-air cooling, enabling continuous 4 kW operation in the same 425 mm wide FSB footprint. The fan adds 35 mm to the depth (169 mm vs 134 mm for fanless FSB) and increases the 24 V DC control supply consumption to approximately 550 mA for the PROFINET variant (vs 290 mA for fanless FSB). The fan is field-replaceable.

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

The PROFINET variant (AB0 suffix) provides dual-protocol PROFINET and EtherNet/IP connectivity with full real-time capability, including PROFIsafe for functional safety over the network. On the 4 kW XM04, this means safety functions and drive control share the same Ethernet cable — no separate safety wiring needed. The AS-Interface variant (AF0) uses the AS-i two-wire bus with STO via F-DI.

What motors can the G115D at 4 kW drive?

The drive is preconfigured for SIMOGEAR 2KJ8 geared motors in frame sizes 71–132 (IE3 async or IE4 synchronous reluctance). At 4 kW, it handles main conveyor trunk lines, incline belts, and heavy accumulation zones — the highest single-drive capacity in the wall-mounted G115D range. Motor cable length is up to 15 m at 4 kHz. The integrated braking circuit supports a minimum external resistance of 80 Ω.

Frequently Asked Questions

Does the 4 kW XM04 require a control cabinet?

No. Like all G115D drives, the XM04 mounts directly on the machine frame with IP65/IP66 protection. The integrated fan is sealed within the IP65 housing — no external ventilation or cabinet cooling required.

How does PROFIsafe work on the 4 kW XM04?

Safe Torque Off (STO) can be activated via fail-safe digital inputs (F-DI) or through PROFIsafe over PROFINET — eliminating dedicated safety wiring even at the highest G115D power rating. The drive achieves SIL 2 (IEC 61508) and PL d Cat 3 (EN ISO 13849-1).

How does the fan affect long-term maintenance?

The fan is the only wear component in the drive. It is field-replaceable via a front-access service kit without removing the drive from its mounting. The fan run-time is monitorable via drive parameters for predictive maintenance scheduling. For intermittent-duty applications, the fan may not run continuously — the drive's thermal management activates it only when needed.