The 6SL3520-0XK04-0AF0 is the 4 kW member of the SINAMICS G120X wall-mounted frequency converter family, purpose-built for infrastructure applications where drives must operate in wet, dusty, or outdoor conditions. Its IP65/IP66 enclosure and -30 to +40°C ambient rating allow direct machine-side or outdoor mounting without an additional cabinet, simplifying distributed drive architectures in water treatment plants, HVAC mechanical rooms, and tunnel ventilation systems.

What makes the wall-mounted G120X different from the standard IP20 variant?

The 0XK0-series packages the same power electronics as the standard G120X in a sealed 240 mm-tall enclosure with an integrated C2 EMC filter. Unlike the 180 mm IP20 variant, the wall-mounted version requires no control cabinet — it connects directly to the motor and fieldbus via watertight cable glands, reducing installation footprint and panel cost.

What overload performance does this drive offer for pump and fan duty?

The drive supports a three-tier overload profile tailored to variable-torque loads: 200% for 3 seconds to ride through momentary blockages or startup surges, 150% for 57 seconds for short-term demand peaks, and 87% for 240 seconds — equivalent to low-noise continuous operation at slightly reduced output. This profile matches the duty cycles typical of centrifugal pumps and axial fans.

How does the drive integrate with SIMATIC control systems?

The G120X connects to SIMATIC PLCs through the TIA Portal engineering framework using predefined converter macros and preconfigured function blocks, eliminating manual parameter mapping. Commissioning options include the IOP-2 operator panel, a web server module for wireless access, and SD memory card cloning for series deployment across multiple identical drives. Motor cable runs up to 150 metres are supported without an additional output reactor.

Frequently Asked Questions

Can this drive operate with non-Siemens motors?

Yes. The G120X can drive any standard 3-phase induction motor within its 4 kW / 20.4 A rating. It is also optimized for Siemens synchronous reluctance motors for applications targeting IE4 or IE5 efficiency levels.

Is an output reactor required for long motor cable runs?

No. The G120X supports motor cable lengths up to 150 metres without an additional output reactor, covering most distributed pump and fan installations without extra hardware.