Integrated Safety Architecture for Collaborative Robotics using a UR3 Robot, Sick S3000 Scanner and Siemens S7-1200 PLC

Abstract This article presents a detailed collaborative robotic architecture that integrates a UR3 robot, a Sick S3000 laser safety scanner and a Siemens S7-1200 PLC into a unified mechatronic cell designed for safe human-robot interaction. The scanner was configured with a three-field safety structure-warning, protective stop and emergency stop-allowing the robot to dynamically adjust its behavior based on the operator’s proximity. The PLC supervises a pneumatic assembly module and performs deterministic synchronization with the robot using a digital handshake signal. Mechanical supports and integration components were designed in Catia V5 to ensure structural coherence and accessibility of the equipment. Experimental validation demonstrates stable performance, predictable safety responses and smooth coordination between robotic and pneumatic processes. The proposed system provides an effective example of how industrial components can be integrated into a compact collaborative workstation suitable for both educational and industrial settings.