The SINAMICS G115D 6SL3520-0XH05-5AB0 is the 5.5 kW wall-mounted distributed drive — the entry point to the FSC frame in the SINAMICS G115D series. Stepping up from the FSB-class 4 kW, the FSC frame accommodates the larger power stage with a deeper housing (169 mm vs. FSB) and integrated fan cooling as standard. Rated at 13.2 A output current with 200% overload capability for 3 seconds, this drive handles accumulation conveyors, merge tables, and sortation infeeds where 4 kW is insufficient but 7.5 kW would be oversized. PROFINET with PROFIsafe provides STO over Ethernet without dedicated safety wiring.

What changes when stepping from FSB 4 kW to FSC 5.5 kW?

The move from FSB to FSC brings three physical changes: a larger housing (425 × 240 × 169 mm), a higher-capacity integrated cooling fan matched to the 5.5 kW power stage, and increased thermal headroom for continuous operation in higher ambient temperatures. Electrically, the 5.5 kW drive delivers 13.2 A rated output — a meaningful step over the 4 kW FSB at 10.2 A. The motor connector (Q8/0), M12 signal interfaces, and SIMOGEAR 2KJ8 geared motor compatibility carry over unchanged from FSB. For system designers, the decision to step up is purely about load torque and duty cycle — the mounting and integration remain consistent.

What motors and gearboxes are compatible?

Direct mounting to SIMOGEAR 2KJ8 geared motors in IE3 (asynchronous) or IE4 (synchronous reluctance) efficiency classes. Integrated 400 V AC brake control eliminates external brake contactors. Encoderless vector control supports both V/f and sensorless vector control modes. Dual-protocol PROFINET and EtherNet/IP on the same interface accommodates mixed-vendor PLC environments without protocol converters.

Frequently Asked Questions

Is 5.5 kW the right choice between 4 kW and 7.5 kW?

The 5.5 kW FSC suits conveyor sections that exceed 4 kW continuous load but do not need the 7.5 kW peak capability. Typical applications include merge tables handling moderate product accumulation and sortation infeeds with controlled acceleration ramps. If the conveyor handles heavy pallets (>500 kg) or sustained incline operation, the 7.5 kW variant provides additional overload margin without changing frame size.

Does FSC require different mounting brackets than FSB?

FSC uses the same wall-mounting approach as FSB — the increased depth (169 mm) extends outward from the wall, but the mounting hole pattern and bracket design remain consistent across the SINAMICS G115D range. Verify clearance for the deeper housing and fan exhaust path during installation planning.