UD78Iss1

UserGuideUD78UD78ServolargeoptionmoduleforUnidrivePartNumber:0447-0032IssueNumber:1GeneralInformationThemanufactureracceptsnoliabilityforanyconsequencesresultingfrominappropriate,negligentorincorrectinstallationoradjustmentoftheoperatingparametersoftheequipmentorfrommismatchingtheDrivewiththemotor.ThisoptionmoduleisintendedforuseonlywithControlTechniquesUnidriveproducts.Anyotheruseinvalidatesthewarrantyandmaycauseasafetyhazard.ThecontentsofthisGuidearebelievedtobecorrectatthetimeofprinting.Intheinterestsofacommitmenttoapolicyofcontinuousdevelopmentandimprovement,themanufacturerreservestherighttochangethespecificationoftheproductoritsperformance,orthecontentsofthisGuide,withoutnotice.Allrightsreserved.NopartofthisGuidemaybereproducedortransmittedinanyformorbyanymeans,electricalormechanicalincludingphotocopying,recordingorbyanyinformationstorageorretrievalsystem,withoutpermissioninwritingfromthepublisher.UsewithintheEuropeanUnion,etcThefollowinginformationapplieswheretheenduseoftheDriveiswithintheEuropeanUnion,theEuropeanEconomicArea,orotherregionswhichhaveimplementedDirectivesoftheEuropeanCouncilorequivalentmeasures.TheDrive,togetherwithitsassociatedoptionmodules,complieswiththeLowVoltageDirective73/23/EEC.TheinstallerisresponsibleforensuringthattheequipmentintowhichtheDriveisincorporatedcomplieswithallrelevantDirectives.ThecompleteequipmentmustcomplywiththeEMCDirective89/336/EEC.IftheDriveisincorporatedintoamachine,themanufacturerisresponsibleforensuringthatthemachinecomplieswiththeMachineryDirective89/392/EEC.Inparticular,theelectricalequipmentshouldgenerallycomplywithEuropeanHarmonisedstandardEN60204-1.Copyright©March1998ControlTechniquesDrivesLtdAuthor:RFDIssueCode:78nu1IssueDate:March1998UD78UserGuideIssuecode:78nu1ContentsChapter1Introduction11.1MainfeaturesoftheUD7812SafetyInformation33InstallingtheUD7864MakingConnections84.1Locationsoftheconnectors84.2SK1Precisionanaloginputconnector9Functionsoftheterminals............................................................................................9Specification.......................................................................................................................104.3SK2Back-upDCsupplyinputconnector11Functionsoftheterminals............................................................................................11Specification.........................................................................................................................11Operation.............................................................................................................................124.4PL1Serialcommunicationsconnector13Functionsoftheterminals...........................................................................................13Specification........................................................................................................................13Serialcommunicationsmodes.................................................................................14Groundconnection........................................................................................................16Routingtheserialcommunicationscable...........................................................17Terminatingthecable....................................................................................................17Operation..............................................................................................................................175RelatedParameters185.1Introduction185.2Precisionanaloginputparameters195.3Back-upDCsupplyparameter225.4Serialcommunicationsparameters21UD78UserGuideIssuecode:78nu1AppendixASerialComms.ANSIMessageFormatsA-1A.1FundamentalsofdatatransmissionA-1A.2ReadingaparametervalueA-4A.3Re-readingaparametervalueA-5A.4WritingaparametervalueA-5A.5Re-writingaparametervalueA-6A.6Calculatingtheblockchecksum(BCC)A-6BSettinguptheDriveusingUniSoftB-1UD78UserGuideIssuecode:78nu111Introduction1.1MainfeaturesoftheUD78NoteTheUD78canbeusedonlywithDrivesequippedwithversion3(orlater)software.(Parameter0.50indicatesthesoftwareversion.)MainfunctionsTheUD78largeoptionmoduleisaninterfacemoduleforinstallationinaUnidriveandhasthefollowingfunctions:•Precisionanaloginput•EIARS485,4-wireor2-wire,serialcommunicationsinterface(fullyopto-isolated)•Back-up+24VDCsupplyinputforkeepingthecontrolcircuitsoftheDrive(andtheUD78)operatingwhentheACsupplytotheDriveisdisconnected.Back-upDCsupplySerialcommunicationsPrecisionanaloginputFigure1ThefunctionsoftheUD78connectorsUD78UserGuideIssuecode:78nu12PrecisionanaloginputTheprecisionanaloginputreplacesterminals5and6Analoginput1intheDrive.Terminals5and6canthennotbeusedforanypurpose.TheparametersassociatedwithAnaloginput1nowrelatetotheprecisioninput.Serialcomms.interfaceTheserialcommunicationsinterfaceallowsthefollowing:•TheDrivetobecontrolledandmonitoredremotelybyasystemcontroller•TheDrivetocontrolormonitoranotherDriveInstallationTheUD78mustbefittedinthelargeoptionmodulebayoftheUnidrive.Precisionanaloginputan