Booklet explains functional safety
An
AS-Interface product story
Edited by the Engineeringtalk editorial team
Sep 2, 2005
A 75-page booklet on functional safety in automation systems has just been published by the global AS-Interface organisation.
A 75-page booklet on functional safety in automation systems has just been published by the global AS-Interface organisation.
It's available free from the AS-interface UK Expert Alliance, an industry group supporting the use of AS-interface technology in the UK.
Called "Safety in automation" and co-authored by well known experts in the field of functional safety, it provides an introduction to the unique safety technology used by AS-interface and covers in detail how AS-interface Safety at Work devices operate alongside conventional AS-interface actuators and sensors on the same cable, to bring rich and flexible safety functionality, with substantial costs savings and without compromising safety integrity.
As well as providing an excellent primer for AS-interface safety systems, it includes a wealth of applications-based material designed to help AS-interface users make best use of the technology.
A major section focuses on the safety monitor and its capabilities, which include six logical elements to cope with both simple and complex safety functionality.
The safety monitor resides on the network to monitor the outputs of each safety device.
It has no bearing on standard operations and both sets of devices co-exist transparently on the network until a fault is detected, at which point the safety monitor shuts down the system in accordance with an agreed safety strategy.
Chapter 4 is devoted to applications examples including emergency stops, door locks and optoelectronic protective devices such as Light Curtains and beam sensors.
Valuable field information is covered, including transferring safety signals between AS-interface and a higher level network.
Other information includes diagnostics and there is a preface by Dr Michael Schaefer, Director of the Department for Accident Prevention and Product Safety at the BGIA in Germany, which gives a useful perspective of latest safety regulations and standards.
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