The Siemens 6DR5620-0EG00-0AA0 is a SIPART PS2 Smart Electropneumatic Positioner — a microprocessor-based valve positioner that mounts on a pneumatic actuator and positions the valve stem according to a control signal. This build is configured without a limit monitor and without an option module, so the housing carries the base electronics only — no mechanical or inductive limit switches fitted, no plug-in card slot occupied. Connection thread el.: M20x1.5 / pneu.: G 1/4, which fixes the cable gland and the air supply port for the panel-builder and the process pipefitter respectively.
For a buyer cross-checking the order code, 6DR5620-0EG00-0AA0 and 6DR56200EG000AA0 are alternate typographical forms of the same catalog number; the product itself is identical, so a panel specified to either spelling lands on the same component.
Fit, handling, and what the wireman checks
Because the build excludes both the limit monitor and the option module, no I/O slot is taken for mechanical switches and no expansion card is present — the installer sees the standard pneumatic manifold plus the M20x1.5 cable entry, nothing else.
Electropneumatic positioners of the SIPART PS2 family are used on control valves in process skids — chemical dosing loops, steam letdown stations, fired-heater fuel valves, and similar throttling service — where a 4–20 mA or fieldbus setpoint has to be translated into a precise pneumatic stem position against process pressure.