Products Machine Safety Safety modules for AS-i Safety at Work
only from ifm electronic, can be connected with- out needing any tools. Once the base has been fitted, the flat yellow AS-i cable slots into the preformed groove in the desired orientation (any one of three directions), the top part placed in position and then the quick close lock secures the module. The four screws needed for earlier models are no longer needed. This design guar- antees fast, easy yet secure mounting, maintain- ing IP67.
Announced recently by AS-Interface supplier ifm electronic, are two new easy to use modules for the Safety at Work wiring system.
These two new safety modules - the AC505S and AC506S - are built with ease of installation in mind. The new ClassicLine housing, available
The two new safety modules feature safe inputs and non-safe outputs. Both are certified to EN 62061 / SIL3 and EN ISO 13849-1 / PL e. These safety modules are designed to take safe inputs, each capable of handling signals from mechanical devices, for example an E-stop or electronic OSSD units such as inductive safety sensors or light guards, while the outputs are standard non-safe signals (safe outputs are generated on Safety At Work by the Safety Monitor). AC505S has two outputs and two LED outputs, the AC506S has two dual inputs, two LED outputs and two transistor outputs. ifm works closely with its customers to develop products which match their needs, and the com- pany provides, readily accessible technical support to help users maximise the benefits they gain from ifm products. ifm electronic
www.ifm.com T: 0208 213 2234
Enter 227 Preparing for the EN ISO 14119 standard
prEN ISO 14119. The final version is scheduled to appear in 2013. It has again undergone extensive revisions compared to the draft version. In connection with EN ISO 13849, the assessment of a series con- nection of electromechanical safety switches is also interesting. Whereas the draft of the new standard, prEN ISO 14119, still included assistance on this topic, this material will be omitted in the final version. At the same time, a paper will appear to explain this topic better and more comprehensively. An appendix of a standard cannot address such a complex topic in sufficient detail. With the new EN ISO 14119, the assessment and use of electro- magnetic guard locking devices will be significantly easier overall, because the procedure is described more clearly. Moreover, the new standard includes a simplified assessment of the tampering hazard and a description for the connection to a control system. However, these are only a few of the changes included in EN ISO 14119.
Modern safety solutions from Euchner The currently valid EN 1088 will soon be
superseded by EN ISO 14119. Both standards pro- vide assistance in the assessment of interlocking devices on movable safety guards. The ‘main standard’ in connection with safety doors is currently EN 1088, ‘Safety of machinery - Interlocking devices associated with guards - Principles for design and selection’. This standard has existed since 1995 and was most recently supple- mented and published in 2005. The date of the standard is now 2008, but only legal adaptations to the modified Machinery Directive have been added. In terms of content, virtually nothing has changed since the initial publication. A fundamental revision of EN 1088 has been in progress for several years. The draft appeared in the year 2011 under a new number -
Machine Safety JUNE 2013
Modern solutions for guard locking devices, such as the Multifunctional Gate Box MGB (system for protecting safety doors) or the CET (transponder-based safety switch with mechanical guard lock- ing) from Euchner, already represent a complete sub-system according to EN ISO 13849-1, because evaluation of the safety signals is already integrated into the device. Consequently, the required block diagram can be produced even more simply. Calculation of the characteristic safety values is simpler, because they can already be provided by Euchner. Series connection is also possible with this type of guard lock- ing device without reducing the PL of the overall circuit. In summary, this is a package that can meet all requirements at once and also one that fully complies with the new EN ISO 14119. Euchner
www.euchner.co.uk T: 0114 256 0123
Enter 234 S7 E-stops with
illuminated base Banner has launched its new 30mm Mount Illuminated Emergency Stop pushbutton. With bright illumination the new E-Stop is well suited for diverse emergency stop safety applications. Featuring Banner’s EZ-LIGHT logic, the E-Stops provides an illuminated yellow base when the button is armed. When the button is pushed, the yellow illumination turns to a flashing red indication to alert operators of an emergency stop condi- tion. The yellow illumination can also turn to a steady red indication when a STOP condition exists by applying an external signal via the M12 QD connector. Offering an IP65 rated design and 30mm mounting base, the E-Stops need no assembly, individual wiring or addi- tional enclosure. Banner
www.turckbanner.com T: 01268 578 888 Enter 228
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