Transportbånd

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    Enkle, pålidelige, dokumenterede løsninger

    Jævn styring af acceleration og deceleration for lange transportbånd reducerer mekanisk stress gennem hele kæden af frekvensomformerkomponenter og for selve transportbåndet. Dette medfører længere levetid for båndet og andre frekvensomformerkomponenter, hvilket øger tilgængeligheden af fordele og reducerer vedligeholdelses- og driftsomkostninger. Fleksibilitet til at styre hastigheden for lange transportbånd kan hjælpe med at reducere flaskehalse og maksimere effektiviteten for materialernes flowproces, hvilket resulterer i omkostningsbesparelser.

    Der installeres ofte flere motorer på lange transportbånd. For at opnå pålidelig drift og maksimere båndets levetid, er frekvensomformere nødvendige for at sikre belastningsfordeling mellem hver motor. VLT® og VACON® frekvensomformere inkluderer styringsløsninger for både master-master og master-follower. Valg af styringsløsning afhænger af frekvensomformernes konfigurering for transportbåndet (for eksempel, alle frekvensomformere ved startposition eller ved både start- og slutposition). De er begge nemme at implementere og har vist sig at være robuste, pålidelige løsninger til lange transportbånd.

    For transportbånd, der har nedadgående retning, hvor drift med kontinuerlig regenerativ bremsning typisk er påkrævet, anvendes en Active Front End (AFE)-frekvensomformer eller alternativt en regenerativ frekvensomformertavleløsning, idet der anvendes en standard 6-puls frekvensomformer med separat regenerativt modul.

    VLT® og VACON® frekvensomformere er udbredte på mange lange transportbånd over en kilometer, som er almindelige ved applikationer til materialehåndtering af bulkvarer ved miner, procesanlæg og havnefaciliteter såsom:

    • ROM bin feeder-transportbånd
    • opbevaringspladser
    • transportbånd til lastning af tog
    • rørtransportbånd
    • lange transportbånd på landjord

     

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