倍加福KFD0-SCS-EX1.55回路供电安全栅特征•单通道安全栅•24v直流电源(回路供电)•电流输入/输出4mA…20mA•HARTI/P或者变送器•低压降•线路故障检测(LFD)•根据IEC61508，安全等级可达SIL2应用这种隔离屏障用于内在安全应用。它是环路供电和隔离一个4mA…20毫安信号发射机和***器，是哈特兼容。与有源隔离器相比，具有明显的低功耗模块，屏障5v降，适用于发射机应用与不稳定的电源之间20v直流…30V直流。如果控制得当，现场电路的线路故障检测是可能的对安全区域内的回路进行过尺度或过尺度监控4mA的条件…20ma范围。该模块还可用于控制电磁阀和离散输出，如led。在这种情况下，终端8-而9+则由24v信号驱动。技术参数Generalspecificati***SignaltypeAnalogoutputSupplyRatedvoltageUnlooppoweredPowerdissipation0.2WFieldcircuitConnectionterminals1+,2/3-Voltage≥16Vforsupplyvoltage>21VCurrent4...20mA(lineartran***ission1...22mA)Load≤800Ω(at20mA)SupplycircuitConnectionterminals8-,9+Voltagemax.30VDCCurrent4...20mA(quiescentcurrent<0.5mA)Powerdissipation150mWat20mAandUE<24VTransfercharacteristicsVoltagedropseenoteDeviationAftercalibration≤&plu***n;80μAlinearity,loadandvoltagedependenceat20°C(68°F)Influenceofambienttemperature<0.5μA/KDampingapprox.3dBRisetime≤20μsat0Ω,≤600μswith800ΩloadElectricalisolationInput/Outputsafeelectricalisolationacc.toIEC/EN60079-11,voltagepeakvalue375VDirectiveconformityElectromagneticcompatibilityDirective2004/108/ECEN61326-1:2006ConformityElectromagneticcompatibilityNE21:2007DegreeofprotectionIEC60529:2001)