The Siemens SINAMICS G115D 6SL3520-0XK07-5AA0 is a 7.5 kW wall-mounted distributed frequency converter with digital and analog I/O terminal control, designed for high-power conveyor drive applications. With a 38 A output current, it powers larger SIMOGEAR 2KJ8 geared motors for heavy-duty horizontal conveying. The IP65/IP66-rated FSC enclosure mounts directly on the machine frame, eliminating control cabinets and their associated cooling infrastructure.

How Is the Drive Controlled Without a Fieldbus?

This -5AA0 variant uses onboard digital inputs for start/stop, direction, and fixed-speed selection, plus an analog input (0–10 V or 4–20 mA) for speed reference. Digital outputs provide status feedback such as running, fault, and speed reached. This terminal-based control is ideal for high-power conveyor sections that operate as standalone units without networked automation. For PROFINET integration, choose the -5AB0 variant; for both PROFINET and EtherNet/IP, choose the -5AF0.

What Are the Installation Requirements?

The FSC 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 at the higher 38 A output level. 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 heavy conveyor start-up surges under full load.

Frequently Asked Questions

Which SIMOGEAR geared motors can this 7.5 kW drive power?

The 38 A output supports the full range of 7.5 kW SIMOGEAR 2KJ8 geared motors, including both IE3 asynchronous and IE4 synchronous reluctance types. When selecting a motor, verify that the gear unit output torque matches the conveyor load requirement and that the motor rated current falls within the drive continuous output rating.

How does the FSC frame differ from the FSA and FSB options?

The FSC frame is the largest in the G115D wall-mounted range, measuring 425 × 240 × 169 mm and delivering up to 7.5 kW with 38 A output. It uses forced-air cooling to maintain thermal performance at high currents. The FSB frame covers the 4 kW to 5.5 kW range with the same external dimensions but lower weight. The FSA frame is the compact option at 380 × 216 × 129 mm for 0.37 kW to 0.75 kW applications.