Interfacing conventional safety components to electronic safety devices is not too complicated. Compared to the conventional safety chain it gives the additional benefit of enhanced diagnostic capability and possibly a higher safety level (in a 'chain' with serial wiring of safety switches one can achieve control category 3, with all switches wired directly to a safe input module category 4 is possible). If it comes to interfacing outputs, it is important to choose the right strategy for high safety functionality and low complexity. Today, distributing safe data by safe fieldbus systems and computing the safe data by a safe control unit (PLC or SIU) gains the highest benefits, when it combines a relatively high number of safe input devices to a low number of output units and wide diagnostic requirements. In the future, when safe drive controls and intelligent circuit breakers become available, this may become true for any number of safe sources and safe output devices.
Interfacing safety fieldbus devices with safety relevant sensors and actuators
Verbindung zwischen CANopen-Komponenten und sicherheitsrelevanten Sensoren und Aktuatoren
2002
11 Seiten, 14 Bilder
Conference paper
Storage medium
English
Springer Verlag | 2024
|Redundant fieldbus systems ensure plant safety
British Library Online Contents | 1997
Safety fieldbus and robots at BMW
IET Digital Library Archive | 2004
|Automatic decision for self-diagnosis triggering in safety relevant sensors
European Patent Office | 2024
|