Product category:
Machine Safety Components
News Release from: IFM Electronic | Subject: GM504S
Edited by the Engineeringtalk Editorial
Team on 09 February 2004
Inductive sensor is safe enough for
safety uses
IFM Electronic reckons that the GM504S is the first inductive sensor that can be used in a Category 4 (EN954-1) or SIL 3 (EN61508) situation.
IFM Electronic reckons that the GM504S is the first inductive sensor that can be used in a Category 4 (EN954-1) or SIL 3 (EN61508) situation The GM504S is constructed with full redundant and diverse internal circuits, certified by the TUV Rhineland, but otherwise has all the advantages of an inductive sensor: with no moving parts, IP67, standard M12 connector etc
This article was originally published on Engineeringtalk on 26 Jun 2008 at 8.00am (UK)
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Some might think that an inductive sensor which needs no special target would be easy to defeat - but that would defeat the object of safety.
The target may be nothing special, but its position in the right place at the right time is what counts.
When the target is present, any other piece of metal between the switch and the target will cause the output to switch off.
Setting the unit is not difficult either, because the LED helps in adjustment, while incorporating a delay to befuddle the fiddlers.
To operate, the fail-safe switch from IFM Electronic is connected to an external controller with safe outputs, though it could equally be connected to a safety PLC running approved software, and IFM Electronic also offers a safety slave for AS-interface Safety at Work with the controller built in, capable of monitoring eight GM504S devices simultaneously.
Functional safety is assured with the IFM Electronic fail-safe inductive system; coil damage, component health, cross-monitoring, short-circuit protection - all aspects are continuously checked by a test pulse from the controller or PLC.
Any fault, at any time is instantly signalled. Request a free brochure from IFM Electronic ...
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