PFEA113-IP65 3BSE050092R65工控DCS系统备件
因此，电机的整个转速范围由±V反馈信号表示。注意：将输出电压大于±V的转速直接连接到模拟离合器通道可能会严重损坏适配器板。然后，必须在适配器板上对转速信号进行缩放，以确定输出电压/电机速度与驱动装置速度的运行关系。然后，必须将该缩放配置数据链接到参数“转速”。第三章安装中的许多问题与速度信号的缩放有关。以下是检查模拟速度反馈或特定驱动操作的缩放的程序。确定每个参考铭牌的电压/RPM。将命令电机在多个时间内加速绝对最大速度。该值也应在参数“RevSpeedLim”和“FwdSpeedLim”中编程以确保速度命令将被适当地循环调节。电压/RPMRatingxMaxSpeed=最大电压输出。然后，最大电压输出必须被调整到±V模拟输入通道范围内的水平。这可以通过驱动器外部网络中的电压来实现。电压分配器将取最大电压输出，并将其调整到最大电压输出值。这允许防止超过%。图中使用电阻或穿过输入通道显示升级网络的下降电阻。为了确定电阻值，以下等式R应为.W，%。图。缩放电路RkOhmAnalogIn+AnalogIn–电阻.W，%TachVelocity+TB–TB–最大电压输出xV–=Rk适配器板输入阻抗TachVelocity–DCTachT。适配器板上的模拟输出通道现在必须进行缩放以呈现准确的速度反馈信号。首先确定基准速度的模拟输出信号。参数编号在适用的情况下输入。BaseMotorSpeedxVMaxSpeed=BaseSpeedInput。基准速度的输入电压不转换为Raw适配器单元，如下所示ingequation.BaseSpeedInputx=RawAdapterUnitsChaperInstallation-.RawAdapter Units用于根据以下等式确定正确的缩放参数值。RawAdapterCUnits=缩放参数值，然后缩放参数值应与相关的模拟输入缩放参数相关。此过程将在%内正确。通过使用数据表。通过调整适当的值来微调刻度，以避免出现任何错误。通过调整与信道相关的偏移参数，可以优化任何行驶速度。AnalogOutput–图显示了典型的模拟和数字输出连接。
sothattheentirespeedrangeofthemotorcanberepresentedbya±Vfeedbacksignal.ATTENTION:Connectingatachwhichhasanoutputrangegreaterthan±Vdirectlytotheanaloginputchannelcanseverelydamagetheadapterboard.Thetachsignalthenmustbescaledintheadapterboardtodeterminetheproperrelationshipofoutputvoltage/motorvelocitytobasespeedinDriveUnits.ThisscaledconfigurationdatamustthenbelinkedtoParameter“TachVelocity”.ChapterInstallation-Manyproblemsrelatetothescalingofthetachsignals.Belowisaprocedureforcheckingthescalingoftheanalogtachfeedbackforproperdriveoperation..DeterminetheVolts/RPMratingofthetachrefertotachnameplate.Multiplythisratingtimestheabsolutemaximumspeedthemotorwillbecommandedtoaccelerateto.ThisvalueshouldalsobeprogrammedinParameter“RevSpeedLim”and“FwdSpeedLim”toassurethatthevelocitycommandwillbeproperlyclamped.Volts/RPMRatingxMaxSpeed=MaxVoltsOutput.TheMaxVoltsoutputmustthenbescaledtoalevelwithinthe±Vanaloginputchannelrange.Thiscanbeaccomplishedbyusingavoltagedividernetworkexternaltothedrive.ThevoltagedividerwilltaketheMaxVoltsoutputandscaleittoamaximumVinput.Thisallowsforprotectionagainst%overshoot.Figure.usesalkohmresistoracrosstheinputchannel.Rlrepresentsthedroppingresistorforthescalingnetwork.TodeterminethevalueofRlusetheequationthatfollowsRshouldberatedfor.W,%.Figure.ScalingCircuitRkOhmAnalogIn+AnalogIn–Resistors.W,%TachVelocity+TB–TB–MaxVoltsOutputxV–=RkAdapterBoardInputImpedanceTachVelocity–DCTachT.Theanaloginputchannelontheadapterboardmustnowbescaledtorepresentanaccuratevelocityfeedbacksignal.Firstdeterminetheanaloginputsignalforbasespeed.Parameternumbersaregiveninwhereapplicable.BaseMotorSpeedxVMaxSpeed=BaseSpeedInput.TheinputvoltageatbasespeedisthenconvertedtoRawAdapterUnitsaccordingtothefollowingequation.BaseSpeedInputx=RawAdapterUnitsChapterInstallation-.TheRawAdapterUnitsarethenusedtodeterminethecorrectscalingparametervalueaccordingtotheequationbelow.RawAdapterUnits=ScalingParameterValue.TheScalingParameterValueshouldthenbeenteredintotheassociatedanaloginputscalingseupparameter.Thisprocedurewillbecorrecttowithin%.Verifythatthescalingiscorrectbymeasuringtheactualmotorvelocitywithahandtachometer.Finetunethescalingbyadjustingtheappropriatevaluetominimizeanyerror..Anydriftatzerospeedcanbeminimizedbyadjustingtheoffsetparameterassociatedwiththechannelinuse.AnalogOutput–Figure.showstypicalanaloganddigitaloutputconnections.
