Siemens 3RG9002-0DB00 AS-Interface Module

The Siemens 3RG9002-0DB00 AS-Interface Module is a compact F90 slave that brings four digital inputs and four digital outputs to an AS-Interface (AS-I) bus, all housed in a 90 mm-wide enclosure designed for clean control cabinet installations. It is specified for IP20 protection and uses screw-terminal connections for reliable field wiring. The module is configured for three-wire sensors, providing 4 inputs and 4 outputs, with outputs rated at 1 A each and a total output current limit of 6 A across all channels, powered from a 24 V DC supply. Outputs are driven via PNP transistor circuitry (two and PNP transistor configuration) and the device occupies a standard AS-I slave position in the control cabinet. For interface options, it accepts two 4-pole plugs (one for AS-Interface and one for the external auxiliary supply), aligning with Siemens’ F90 module design. This 3RG9002-0DB00 part is commonly used to expand discrete I/O on AS-I networks, enabling reliable sensing and actuation with minimal wiring while preserving a compact footprint. In practice, it supports straightforward integration with Siemens SIRIUS automation hardware and other AS-I compatible controllers to streamline machine automation tasks such as monitoring sensors and driving actuators in automated systems.