Siemens 3RK3511-1BA10 Interface Module DP Interface

Siemens 3RK3511-1BA10 is a SIRIUS DP interface module designed for the modular safety system 3RK3, delivering a PROFIBUS DP interface at 12 Mbps and RS-485 signaling to connect safety relays such as the 3SK2 family over a standard bus. The unit occupies a 45 mm-wide footprint and features screw-terminal connections for straightforward field wiring, with parameterization accessible via the Modular Safety System Engineering Software (MSS ES) without the need for a separate connection cable. As part of Siemens’ safety portfolio, this DP interface module acts as the bridge between 3RK3 safety relays and a PROFIBUS DP master, enabling safe, dependable communication across DP networks in industrial automation environments. Siemens notes that 3RK3511-1BA10 has a successor model, 3SK2511-1FA10, guiding migration for newer installations and continued compatibility within the SIRIUS safety ecosystem. Engineered for integration in safety-critical networks, the module interfaces with a PROFIBUS DP master to carry safety-related status and control signals between the 3RK3 safety components and the rest of the automation system.