SIMATIC ET 200 - For distributed automation solutions - November ...

© Siemens AG 2010SIMATIC ET 200pro with Safety Integrated and PROFINETVolkswagen Nutzfahrzeuge, Germany –Vibrating roller test bedRequirementsVolkswagen Nutzfahrzeuge (VWN), an autonomous brand ofthe Volkswagen corporation has installed the final noise testin the transporter works in Hanover in the workshop hall. Nowthe commercial vehicle business is operating a vibrating rollertest bed in its works in Hanover in cooperation with the "AutomationInitiative of the German Automotive Industry" (AIDA).The customer's requirements were extensive: The vibratingroller test bed had to be linked into the existing network structure(PROFINET); fail-safe communication was just as importantas a reduction in training costs. The use of distributed I/Owas also demanded.SolutionThe distributed I/O had to be installed in the support structureof the test bed, in a compact space, close to the vibrationdampers. Therefore the only solution was a cabinet-free solutionof extremely high ruggedness and industrial compatibility,which is why SIMATIC ET 200pro was used.An S7-400F controller was used which ensured fail-safe communicationover PROFINET. Apart from the cabinet-freeSIMATIC ET 200pro, the SIMATIC ET 200S – which was installedin the control cabinet alongside the controller – wasalso used as distributed I/O. Both distributed I/O systems are ina standard but fail-safe configuration. A PROFINET-capableSCALANCE X208pro switch with IP65 degree of protection distributesincoming and outgoing data.BenefitsUse of SIMATIC ET 200pro resulted in a number of advantages:Costs were saved thanks to standardization and optimizationof the spare parts inventory. The reduction in training costs formaintenance and service personnel was also satisfied. Due tothe ability to replace electronic modules during operation (hotswapping), high availability was achieved for the plant. Therewas also a reduction in the installation and wiring costs for thesafety-related part of the plant.60References