What this PROFINET module does in a soft starter system
The 3RW5980-0CS00 is a PROFINET standard communication module that plugs into a SIRIUS 3RW55 soft starter, giving the starter a real-time Ethernet link to a PLC or higher-level controller. It mounts via screw fixing in any orientation and measures 28 mm wide, 126 mm high, and 82 mm deep — a slim footprint that fits alongside the starter on a DIN rail or panel plate.
Operating conditions and derating you need to plan for
Rated for -25 to +60 °C during operation, but above 40 °C the basic unit must be derated — the exact curve is in the Siemens catalog, not a simple fixed percentage. Installation altitude goes up to 5000 m, with derating starting at 1000 m; above that, air density and cooling drop, so the module's current draw and internal heating need a margin. Environmental class 3K6 during operation (no ice, occasional condensation) and 3C3 (no salt mist) means this module is suited for dry indoor industrial panels — not outdoor or washdown zones without an enclosure.