Sensor systems 2 AS-Interface
Sensor systems 2 AS-Interface Sensor systems 2 AS-Interface
Masters and Gateways Power Supplies, Extender, Repeaters Safety at work I/O Modules Control cabinet I/O Modules Field application Analogue modules Other modules Inductive sensors Photoelectric sensors Rotary encoders Accessories AS-Interface - Safety at Work 80 Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005
Issue date 2004-11-19 - Catalogue AS-Interface 2004/2005 AS-Interface - Safety at Work 4 AS-Interface - Safety at work The rubric of "AS-Interface Safety at Work" includes safe communications based on AS-Interface. This system has been the industry standard for networking of sensors and actuators for years. The safety concept lowers installation costs for intrinsically safe components while adhering to current safety regulations. Typical danger spots are, for example, manually operated feed systems, in which process availability and safety-oriented aspects compete. Short reaction times are important, so that the switching-off of equipment occurs quickly and minimal safety distances and margins are not exceeded. The following functions are frequently required to limit the inherent dangers to the minimum possible: EMERGENCY-STOP: For manual switch-off in the event of a fault Restart inhibit: For safety during and following a fault Repair and maintenance: Safe access Moveable protective systems: Monitor functional integrity Setup: Operating functionality and flexibility during re-tooling and process sequences Safe operation: Minimising the risks during normal operation Controlled restart: Achieved, for example, by the use of key-operated switches after the cancellation of the restart inhibit Muting function: e. g. for feeding material, with by-pass of the safety function for a specified short period of time Indicating via signal lamps: e.g. with activated muting function with increased risk potential Access protection (e. g. Safety light barriers with a beam separation of 500 mm in accordance with EN 999) Intervention protection (e. g. safety light grids with a beam separation of 25 mm) Finger protection (e. g. safety light curtain with a beam separation of 14 mm) In these applications EN 954-1 "Safety of machines, safety-related parts of controls (Categories 1 to 4)", EN 60204-1 "Safety of machines, electrical equipment" and IEC 61508 "Functional Safety of electronic systems (Classified, for example, in terms of the probability of failure of the safety system)" must be adhered to. The weakest link in the chain determines the safety of the overall system. Current solutions are often contrived, such that conventional sensors and actuators are installed using parallel wiring, in order to facilitate fault detection and fault rectification. AS-Interface Safety at Work sets new standards here in terms of flexibility, diagnostic cabability and simplicity of installation. ... offers savings potential Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com 81 Masters and Gateways Power Supplies, Extender, Repeaters Safety at work I/O Modules Control cabinet I/O Modules Field application Analogue modules Other modules Inductive sensors Photoelectric sensors Rotary encoders Accessories
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Masters and<br />
Gateways<br />
Power Supplies,<br />
Extender, Repeaters<br />
Safety at work<br />
I/O Modules<br />
Control cabinet<br />
I/O Modules<br />
Field application<br />
Analogue modules<br />
Other modules<br />
Inductive sensors<br />
Photoelectric<br />
sensors<br />
Rotary encoders<br />
Accessories<br />
<strong>AS</strong>-<strong>Interface</strong> - Safety at Work<br />
80<br />
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany<br />
Pepperl+Fuchs Group Tel.: Germany +49 621 776-0 USA +1 330 4253555 Singapore +65 67799091 Internet http://www.pepperl-fuchs.com<br />
Issue date 2004-11-19 - Catalogue <strong>AS</strong>-<strong>Interface</strong> 2004/2005
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