Many PNOZ X base units allow for expansion with additional modules to increase the number of inputs, outputs, or to add specific functionality. They come with built-in diagnostics to help

These safety relays often include feedback loop monitoring to ensure that all safety contacts are properly connected and functioning. This feature helps detect any faults or disconnections in the safety

In the PNOZ X series by Pilz, base units indeed come in various configurations, including safety relays and safety control systems. http://www.pilz.com These units are designed for applications where safety

These expansion modules typically connect to the base unit via a dedicated interface, allowing for easy scaling of safety functions. They are used to extend the number of safety contacts