When implementing essential safety systems, you can choose from several architectures. While there are different ways to ensure compliance, an integrated approach proves to be the most efficient. Here’s how the options compare.
Level 1: conventional relay logic
For small scale solutions, a hard‑wired setup offers a straightforward and dependable solution. Its simplicity keeps everything easy to understand, and issues can often be identified directly at the source without the need for advanced tools or programming. When high‑level safety architectures aren’t required, this approach provides a practical, compliant, and accessible way to keep machines running smoothly.
Level 2: Level 2: centralized safety controllers
This approach offers a flexible step forward by shifting logic into a compact, stand‑alone controller with an intuitive graphical programming interface. It operates independently when no PLC is required and can be added easily whenever additional functionality is needed. Sensors and e‑stops connect directly to the unit, keeping the setup straightforward and allowing the system to grow or adapt without major redesign.
Level 3: integrated & decentralized safety management
Safety I/O modules can be used in both centralized and decentralized architectures, giving customers the freedom to choose the setup that fits their application best. Placing the modules closer to the application reduces wiring effort, speeds up installation, and makes future expansion extremely simple. With TSN‑based safety, a single safety PLC can coordinate servo drives, robots, inverters, and safety signals alongside standard I/O. This creates a unified platform for machine‑ and even line‑level control, enabling faster diagnostics, smoother integration, and a highly scalable safety concept.
