BECKHOFF EL3121 1-Channel Analog Input Terminal

BECKHOFF

Product number: EL3121
Producer: BECKHOFF
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Datasheets for BECKHOFF EL3121 1-Channel Analog Input Terminal

Description for BECKHOFF EL3121 1-Channel Analog Input Terminal

The EL3121 analog input terminal processes signals in the range between 4 and 20 mA. The current is digitised to a resolution of 16 bits and is transmitted, electrically isolated, to the higher-level automation device. The input channels of the EtherCAT Terminal have differential inputs and possess a common, internal ground potential. The EL3121 is the single-channel version and is characterised by its fine granularity and electrical isolation. An open lead or overload condition are detected. The terminal status is relayed to the controller via the E-bus. The EtherCAT Terminal indicates its signal state by means of light emitting diodes. The error LEDs indicate an overload condition and a broken wire.Technical dataEL3121 | ES3121Number of inputs1 (differential)Power supplyvia the E-busTechnologydifferential inputSignal current4…20 mADistributed clocksyesInternal resistance85 Ω typ. + diode voltageInput filter limit frequency5 kHzCommon-mode voltage UCM10 V max.Conversion time~ 40 µsResolution16 bit (incl. sign)Measuring error< ±0.3 % (relative to full scale value)Surge voltage resistance35 V max.Electrical isolation500 V (E-bus/signal voltage)Current consumption power contacts–Current consumption E-bustyp. 130 mABit width in the process imageinputs: 4 byteSpecial featuresstandard and compact process image, activatable FIR/IIR filters, limit value monitoringWeightapprox. 55 gOperating/storage temperature-25…+60 °C/-40…+85 °CRelative humidity95 %, no condensationVibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4Protect. class/installation pos.IP 20/variablePluggable wiringfor all ESxxxx terminals

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