The SINAMICS G115D 6SL3520-0XH20-5AF0 is a 0.55 kW wall-mounted distributed drive with AS-Interface communication — the lowest-power three-phase variant in the G115D range. It extends decentralized drive benefits to the lightest conveyor zones: small roller beds, divert wheels, and transfer units where fractional-kilowatt motors are the norm. The FSA enclosure (380 × 216 × 129 mm) installs directly on the machine in IP65/IP66.

Why Specify 0.55 kW Instead of 0.75 kW?

The 0.55 kW rating closes the gap below 0.75 kW for conveyor sections with genuinely light mechanical loads — short gravity-roller sections with a single powered roller, small belt turns, and product divert units. Specifying the correct power avoids oversizing: the 0.55 kW drive (3.4 A overload / 1.7 A continuous) draws less current and generates less heat than its 0.75 kW counterpart when both are running the same light load. On AS-Interface networks where many zone drives share a single bus, this incremental efficiency adds up across dozens of zones.

What Are the Practical Limits?

The 0.55 kW FSA drive pairs with smaller SIMOGEAR 2KJ8 geared motor frame sizes for low-speed, low-torque conveyor duty. Integrated STO (Safe Torque Off) via F-DI or PROFIsafe is included — the same safety architecture as higher-power G115D variants. If your load calculations show a 0.55 kW motor is sufficient, this drive delivers the full G115D feature set without paying for unused power capacity.