The SINAMICS G115D 6SL3520-2XA23-0AF0 is a 3 kW wall-mounted distributed drive in the FSB frame, configured with PROFINET and PROFIsafe communication (AF0 suffix). This is the highest-power fanless variant in the G115D 2XA sub-series — the 3 kW model uses natural convection cooling with a compact 134 mm enclosure depth, making it the best choice where both power density and depth clearance are priorities. IP65/IP66 protection enables direct machine-mounted installation.

What makes the 3 kW the last fanless G115D variant?

In the G115D FSB frame, the 3 kW model is cooled entirely by natural convection through the enclosure surface — no fan, no moving parts, and no acoustic noise. The 4 kW variant introduces an integrated fan that increases the enclosure depth from 134 mm to 169 mm. For conveyor installations in noise-sensitive environments or where depth clearance is constrained, the 3 kW fanless design eliminates both fan noise and the additional 35 mm of depth. The 7.7 A HO rated output (15.4 A peak for 3 s at 200% overload) covers a wide range of horizontal conveyor sections.

How does the AF0 PROFINET interface benefit conveyor applications?

The AF0 suffix provides PROFINET industrial Ethernet with integrated PROFIsafe functional safety. In a distributed conveyor architecture — where drives mount along the conveyor at each zone — PROFINET enables daisy-chain networking: a single cable carries control, diagnostics, and safety signals from zone to zone. PROFIsafe eliminates the need for separate hardwired emergency-stop circuits at each drive, significantly reducing field wiring compared to the basic I/O (AA0) variant.