The Siemens SINAMICS G115D 6SL3520-0XK04-0AB0 is a 4 kW wall-mounted distributed frequency converter with native PROFINET IO for SIMATIC-controlled mid-range conveyor applications. With a 20.4 A output current, it powers SIMOGEAR 2KJ8 geared motors for horizontal conveying where the 0.37 kW FSA models are undersized but the 7.5 kW FSC variant would be excessive. The IP65/IP66-rated FSB enclosure mounts directly on the machine frame.

Where Does the 4 kW Model Fit in the G115D Power Range?

This -0AB0 variant occupies the entry point of the FSB frame, delivering 20.4 A at 4 kW. It bridges the gap between the compact FSA models (0.37–0.75 kW, natural convection, 380×216×129 mm) and the larger FSB/FSC models (5.5–7.5 kW, forced-air cooling). For conveyor systems with mixed power requirements, the 4 kW drive standardizes on the FSB form factor (425×240×169 mm) across medium-power sections, simplifying mounting and spare parts. PROFINET IO and PROFIsafe STO (SIL 2 / PL d) are integrated natively.

What Are the Installation Requirements?

The FSB frame measures 425 × 240 × 169 mm (W×H×D) and mounts directly on the machine frame or wall. The IP65/IP66/UL Type 4X enclosure withstands washdown and dusty environments without a cabinet. The operating ambient temperature range is −30 °C to +40 °C, extendable to +55 °C with derating. Forced-air cooling maintains thermal performance. The integrated Category C2 EMC filter ensures compliance with IEC 61800-3 without external filtering.

Motor Compatibility and Control

The drive is optimized for SIMOGEAR 2KJ8 geared motors with IE3 asynchronous or IE4 synchronous reluctance motors. Control modes range from simple V/f for basic speed regulation to encoderless vector control for applications requiring precise torque at low speeds. The integrated brake chopper (180 V DC) manages motor holding brakes directly. Overload capability reaches 200% for 3 seconds, supporting conveyor start-up surges under load.

Frequently Asked Questions

Which SIMOGEAR geared motor combinations are recommended for 4 kW conveyor sections?

The 4 kW drive pairs with SIMOGEAR 2KJ8 geared motors rated up to 4 kW, with the 20.4 A output supporting both IE3 asynchronous and IE4 synchronous reluctance motor types. The optimal gear ratio depends on the conveyor speed requirement — consult the SIMOGEAR selection guide or TIA Portal motor selection tool to match gear unit output torque and speed to the application load profile.

Can this drive be used alongside FSA and FSC models on the same conveyor line?

Yes. All G115D wall-mounted variants share the same PROFINET interface, TIA Portal engineering workflow, and SIMOGEAR motor compatibility. A single conveyor line can mix FSA, FSB, and FSC drives at different power nodes, all managed from one SIMATIC PLC project with consistent diagnostic data and parameter handling across the entire drive population.