AS-Interface Safety at Work - SCHMERSAL - #7

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7 Benz & Hilgers GmbH, Neuss Installation costs reduced by 30% Benz & Hilgers (Benhil) at Neuss is specialised in packaging machines for pasteurised products. For the new series of wrapping machines, e.g. for butter, Benhil has decided to use the safety-related communication technology. During a thorough analysis of the different systems available, AS-i SaW revealed itself as a highly economical solution, as the safety signals are transmitted through the same cable as the conventional sensor-actor signals. This decision furthermore was facilitated as Schmersal, Benhil’s usual partner for safety components, offered a comprehensive program of safety switchgear with integrated AS-i SaW interface. Dipl.-Ing Ralph Bellin, Electrical Site Manager at Benhil’s: „We essentially chose AS-i SaW because of the simplified mounting possibilities. As the burden of the costs is enormous in our field, we must save money wherever we can, including on the installation costs. Safetyrelated bus systems are valuable in this regard: with AS-i SaW, the installation costs were reduced by 30%. For the future generations of our machines, we will use AS-i SaW as well.“ Magurit Gefrierschneider GmbH, Remscheid Optimal signal transmission between control cabinet and machine The company Magurit Gefrierschneider GmbH produces slicers, mincers and shredders for food industry. As these highcapacity machines are equipped with extremely sharp and powerful cutting devices to cut up fresh and frozen products, the risk of injury is very high. Furthermore, in food industry, high hygienic standards have to be maintained and simplicity of cleaning must be provided. Therefore, the different machine compartments are equipped with flaps and large sliding guards, whose position is monitored by concealed-mounted safety sensors. When it became necessary to install the control cabinet at approximately 60 meters from the machine, Magurit decided to use safety switching appliances with AS-i SaW interface. Nine different types of safety switching appliances were installed and connected to the bus cable. The safety monitoring module is installed in the control cabinet. Dipl.-Ing. Dino Vieth, Electrical Site Manager of Magurit: „The reduction of the wiring costs is not the sole advantage of the safety bus. It also provides the user with improved diagnostic possibilities, considering that many operational conditions can be documented and inquired.“ R C S OR applications