AS-Interface Safety-at-Work

Alongside to the communication of standard data an AS-Interface network (even already existing ones) may also be used for the communication of safety-related data. For this you need to connect safety-related slaves (sensors like E-Stops, safety light curtains, two-hand controls and similar devices or actuators like drives, hydraulic cylinders and similar) on the one hand and a safety monitor on the other hand to the network.

The advantages of this solution: No additional cabling is necessary, the existing network, including repeaters, can be used. According to the selection of the components performance levell PL e (EN 13849) or safety integrity level SIL 3 (IEC 61508) can be achieved. Diagnosis information (which E-Stop has triggered?) comes with AS-Interface automatically. Further it is not necessary to recalculate the reaction time when changes or extensions to the configuration are made. For sensors it is 40ms max in any configuration.