SOLUTIONS - Moeller Electric Parts

Purest WaterAutomated filling station witheasyHMI and easyRelayThe Bremen-based company AcmosChemie develops and produces barrierlayerproducts which prevent or minimisecontact between two materials. Thewater required for manufacturing theproduct must be treated, conveyedand dosed via filling stations. ElgaBerkefeld, a company based inCelle near Hannover, implementeda tailored solution for the fillingstations at Acmos Chemie usingMoeller automation components.THE COMPANIESElga Berkefeld GmbH has had itsheadquarters in Celle near Hannover forover 110 years, and since 2004 has beenpart of Veolia, or more precisely VeoliaWater Solutions & Technologies, a leadingcompany worldwide in water treatment.The company‘s core areas of competenceare the planning, engineering andrealisation of comprehensive plantsfor potable water and process watertreatment. Furthermore, the companyoffers standard and tailored watertreatment systems for house equipmentand building technology, installationsfor the petrochemical industry, powergeneration, shipping and offshoreplatforms, as well as mobile plants foremergency equipment.(www.elga-berkefeld.de)Acmos Chemie KG, Bremen, developsand manufactures barrier-layer productssuch as release agents, lubricants, anticorrosiveagents, metalworking fluidsand high temperature resistant coatingsfor the wood, glass and plastics industry.The origins of Acmos Chemie go backto 1909, and the company now sells itsrange of over 1000 products worldwide.(www.acmos.com)20Acmos requires highly purified water for themanufacture of its chemical products. Thetreatment plant installed by Elga Berkefeldsupplies this highly purified water byhardening and reverse osmosis, and thenfeeds it into a storage tank. A ring mainwas installed so that the highly purifiedwater can be transported into the differentproduction areas. This currently reaches fivefilling stations via a pressure booster station.A solely manual and mechanical operationof the filling stations, however, wouldrestrict the operating personnel during thefilling process and make it more difficultto maintain constantly precise dosing.Furthermore, the simultaneous drawingof water from several stations could causean uncontrollable supply shortage whichwould take the capacity of the plant to itslimits. The precise observance of mixingratios is also vital in order to maintainthe constant high quality of the chemicalproducts. The decision to use an automatedand programmable solution for the fillingprocess was therefore a logical step. Thetailored automation concept had to befuture-proof and therefore provide spacefor later optimizations.Automated solutionThe requirements for the plannedautomation solution were far greaterthan those stipulated by the standards.The actual states / values of the sensors,such as flow speed and storage tank levelhad to be measured in order to controlthe actuators such as pumps and valvesso that the setpoint states/values definedRemote filling station consisting of easy800 controlrelay and MFD4 touch display.by the operator could be reached. Thiskind of automation task was one that ElgaBerkefeld had implemented as a standardsolution for several hundred similarapplications – using Moeller‘s easyRelayprogrammable compact controllers. Theadditional challenge of the Acmos solutionarose from the fact that different setpointswere required for virtually every fillingoperation due to the different chemicalproducts involved. With the new solution,the operating personnel should be able toset product parameters at all filling stationssimply and with a few operations at anytime. In addition to this, it must be possibleto monitor warning and fault messages, aswell as relevant actual values, setpoints andlimit values at a glance.MFD4 with touch technologyThe requirements placed on HMI devicesin the chemical engineering industry arehigh. However, a programmable, fullgraphics colour display with robust touchtechnology meets these requirementsideally. Moeller‘s metallic MFD4 multi-For Moeller Electric Sales and Support call KMparts.com (866) 595-9616