What this basic unit does in the motor feeder
The Siemens 3UF7020-1AU01-0AX0 is the control unit for the SIMOCODE pro S motor management system — it handles the logic, the fieldbus interface, and the local I/O for one motor feeder. It carries 4 digital inputs and a relay output, and it integrates a control unit, direct start capability, and a test function into a single 22.5 mm-wide housing.
Panel fit and wiring constraints
At 22.5 mm wide, 100 mm tall, and 124.5 mm deep, this unit occupies a single standard DIN-rail module slot. The fastening method accepts both screw and snap-on mounting, so it locks onto the rail without tools or releases with a screwdriver for panel rework.
Rated supply and output current
The control supply is rated 110 to 240 V AC/DC at 50/60 Hz. The altitude derating is straightforward — full rating up to 2000 m, then derated to 3000 m at +50 °C and 4000 m at +40 °C without protective separation.