Flexible space savers
06 October 2010
Up to 16 fieldbus devices per segment can be connected to intrinsically safe fieldbus barriers from R. STAHL, which have half the footprint of conventional solutions. The units therefore support both today’s typical applications with up to 12 fieldbus devices and potential future implementations with up to 16 fieldbus devices.
Flexible space savers
The 8-channel fieldbus barriers can be combined with various standard enclosures and cable glands, allowing users to create individual, application-specific solutions. All I.S. clamps are detachable, thus facilitating installation and maintenance. Equipped with an aluminium, stainless steel or GRP housing, the coupler can be easily installed on DIN rails. Cover windows provide an overview of the fieldbus connection diagnosis LEDs, thus ensuring that status and failure messages are immediately detected. Ex switches allow for easy maintenance hot swapping of the couplers during operation in zone 1. Surge protection is optionally available for trunk and spurs. Moreover, all fieldbus coupler models from R. STAHL feature power management that limits the short circuit current to one device per coupler. In addition, a soft start function activates one field device after the other during fieldbus start-up, thereby considerably limiting the starting current of the fieldbus devices by up to 50 % and allowing for fault-proof, large-scale installations.
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