The 6SL3520-0XM02-2AF0 is a 2.2 kW SINAMICS G115D distributed frequency converter, FSB frame, with the AF0 I/O configuration. Like all G115D drives in the 2.2–3 kW FSB range, it uses natural-convection cooling — the sealed IP65/IP66 aluminum housing dissipates heat passively, with no fan, no filter, and no moving parts inside the enclosure. The drive can be wall-mounted near the motor or bolted directly to the machine frame, eliminating the control cabinet entirely for the drive section.

How do you install the FSB G115D on a machine frame?

The FSB G115D (425×240×134 mm, 7.12 kg) mounts with four M6 bolts on a flat, vibration-damped surface. The enclosure is sealed at IP65/IP66, so no additional housing or canopy is required indoors. Cable entry is through metric glands on the underside — power cables, motor cables, and PROFINET signal cables each use separate gland positions to maintain segregation. Minimum clearance of 100 mm above and below the drive is recommended for convection airflow. For motor-mounted installations, the G115D uses an adapter plate specific to the SIMOGEAR motor frame size — the drive sits directly on the motor terminal box, eliminating the motor cable run entirely.

What does the integrated Cat C2 EMC filter cover?

The G115D includes a Category C2 radio interference suppression filter compliant with EN 55011 Class A (industrial environment). This covers conducted emissions on the supply side up to 30 MHz — sufficient for CE marking of the complete machine without an external line filter, provided the motor cable length is kept within the limits specified in the operating instructions. For residential or mixed-use environments requiring Category C1 (Class B), an additional external filter is needed. The filter also provides basic surge protection on the supply input, though external Type 2 surge protection is recommended for installations in lightning-prone areas.

Frequently Asked Questions

What cable lengths are supported between the G115D and the motor?

Siemens specifies maximum motor cable lengths based on the EMC category and whether an output reactor is used. With the integrated Cat C2 filter and no output reactor, shielded motor cable runs of up to 25 m are typical for the 2.2 kW FSB at 4 kHz pulse frequency. Longer runs increase the risk of reflected-wave voltage spikes at the motor terminals and elevated conducted emissions. For cable runs beyond 25 m, add an output dv/dt filter or consult the G115D operating instructions for the derating curve.

Can multiple G115D drives share the same 24 V DC control supply?

Yes. The G115D control electronics are powered by an external 24 V DC supply, separate from the three-phase power input. This allows the PROFINET communication and control logic to remain active even when the main three-phase supply is disconnected for safety maintenance. Multiple drives can share a single 24 V DC PELV power supply, provided the total current draw of all connected drives is within the supply's rating. Each G115D draws approximately 0.8 A from the 24 V rail with PROFINET active.