BECKHOFF EL3255 HD Ethercat Terminal

The EL3255 EtherCAT Terminal enables potentiometers to be connected directly. A stabilised power supply in the terminal and the ratiometric measurement of the input voltage offer the preconditions for precise measurement. On account of its high sampling rate and together with potentiometer position encoders, the compact 5-channel EtherCAT terminal represents an economical position detector.

The HD EtherCAT Terminals (High Density) with increased packing density feature 16 connection points in the housing of a 12 mm terminal block.

Technical dataEL3255Number of inputs5Power supplyvia power contactsTechnologyratiometric potentiometer evaluation with supply, 3-wireDistributed clocksyesFeed voltage potentiometertyp. 10 V ±10 %Internal resistance>> 100 kΩ to wiper connectionInput filter limit frequencytyp. -3 dB at 3 kHz and potentiometer 50 kΩSensor typespotentiometer 300 Ω…50 kΩOutput currentmax. 0.3 A total supply current for the potentiometersWiring fail indicationyesConversion timetyp. 300…700 µs, dependent on settings, default setting: approx. 500 µs (5 channels, filter deactivated)Measuring rangepotentiometer 300 Ω…50 kΩResolution16 bit (incl. sign)Measuring error< ±0.5 % (relative to full scale value)Electrical isolation500 V (E-bus/field potential)Current consumption power contactsdependent on the potentiometers, max. 70 mACurrent consumption E-bustyp. 80 mABit width in the process image5 x 16 bit inputConfigurationno address setting, configuration via the controllerConductor typessolid wire, stranded wire and ferruleConductor connectionsolid wire conductors: direct plug-in technique; stranded wire conductors and ferrules: spring actuation by screwdriverRated cross-sectionsolid wire: 0.08…1.5 mm²; stranded wire: 0.25…1.5 mm²; ferrule: 0.14…0.75 mm²Special featuresopen-circuit recognition, supply monitoring, activatable filters, simultaneous measurement of the channelsWeightapprox. 70 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/variable

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