4 PNP inputs on AS-Interface, 22.5 mm wide
The 3RK2200-0CE02-0AA2 is a Siemens AS-Interface A/B slave module carrying four digital PNP inputs — no outputs on this variant. It sits in the SlimLine S22.5 family, meaning the housing is 22.5 mm wide and 102 mm tall, designed for IP20 control-cabinet use on 35 mm DIN rail or wall-mounted via push-in lugs. Each input is PNP transistor type, switching at a minimum high level of 10 V DC, with a 5 mA minimum signal current and 1.5 mA maximum at signal 0. The module supports both 2- and 3-wire sensor connection, and the sensor supply from AS-Interface is short-circuit and overload resistant. Power comes from the AS-Interface cable itself — the module draws up to 270 mA from the AS-Interface total current. An external auxiliary supply of 20 to 30 V DC is required separately to power the output circuits (though this module has no outputs, the supply connection is still needed for the module's internal logic).
Diagnostics and addressing
The module provides three LED indicators: green for AS-Interface communication, red for fault, and yellow per I/O channel for input status. Addressing is done via a front-facing socket, and the ID/ID2 code is set to A/0. Operating temperature range is -25 to +70 °C, storage from -40 to +85 °C. The input voltage range is 20 to 30 V DC, and the output voltage at 24 V DC is 22 to 24 V. At 40 °C ambient, the module can deliver 200 mA from the AS-Interface supply.