{"product_id":"beckhoff-el3021-ethercat-terminal","title":"BECKHOFF EL3021 EtherCAT Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe BECKHOFF EL3021 is a 1-channel analog input terminal designed for processing current signals ranging from 4 to 20 mA. As part of the EtherCAT Terminal system, this device handles differential signal acquisition with a 12-bit resolution, presenting data within a 16-bit format including sign. It integrates directly into modular industrial automation networks via the EtherCAT protocol, providing precise measurement data transfer to the controller.\u003c\/p\u003e\n\u003cp\u003eThis compact terminal features internal signal conditioning with an input filter limit frequency of 1 kHz and a default conversion time of 0.625 ms, which is configurable to suit application requirements. System communication and internal logic are powered via the E-bus, while electrical isolation protects the control system from field-side disturbances. The hardware supports standard and compact process image configurations, activatable FIR and IIR filters, and built-in limit value monitoring.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1-channel analog input terminal for 4 to 20 mA current signals\u003c\/li\u003e\n  \u003cli\u003eDifferential input technology with 12-bit resolution (16-bit presentation including sign)\u003c\/li\u003e\n  \u003cli\u003eConfigurable conversion time with a 0.625 ms default setting\u003c\/li\u003e\n  \u003cli\u003eSelectable FIR and IIR filters for signal conditioning\u003c\/li\u003e\n  \u003cli\u003eIntegrated limit value monitoring capabilities\u003c\/li\u003e\n  \u003cli\u003eStandard and compact process image modes\u003c\/li\u003e\n  \u003cli\u003eE-bus powered system interface with 500 V electrical isolation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIndustrial process control and automation systems\u003c\/li\u003e\n  \u003cli\u003eAnalog sensor signal acquisition (transmitters, flow meters, pressure sensors)\u003c\/li\u003e\n  \u003cli\u003eMachine building and factory automation monitoring networks\u003c\/li\u003e\n  \u003cli\u003eData logging and real-time process telemetry\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ch4\u003eGeneral\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eManufacturer\u003c\/td\u003e\n      \u003ctd\u003eBECKHOFF\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eExact Model\u003c\/td\u003e\n      \u003ctd\u003eEL3021\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProduct Type\u003c\/td\u003e\n      \u003ctd\u003eEtherCAT Terminal\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDesign Form\u003c\/td\u003e\n      \u003ctd\u003eCompact terminal housing with signal LEDs\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMaterial\u003c\/td\u003e\n      \u003ctd\u003ePolycarbonate\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSignal and I\/O\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n      \u003ctd\u003e1 (differential)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Type\u003c\/td\u003e\n      \u003ctd\u003eDifferential current\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSignal Current\u003c\/td\u003e\n      \u003ctd\u003e4 to 20 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInternal Resistance\u003c\/td\u003e\n      \u003ctd\u003eTyp. 85 ohm + diode voltage\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSurge Voltage Resistance\u003c\/td\u003e\n      \u003ctd\u003eMax. 35 V\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCommon-Mode Voltage UCM\u003c\/td\u003e\n      \u003ctd\u003eMax. 10 V\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eElectrical\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePower Supply\u003c\/td\u003e\n      \u003ctd\u003eVia the E-bus\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption E-bus\u003c\/td\u003e\n      \u003ctd\u003eTyp. 130 mA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption Power Contacts\u003c\/td\u003e\n      \u003ctd\u003e- (none)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Load Power Contacts\u003c\/td\u003e\n      \u003ctd\u003eImax: 10 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eElectrical Isolation\u003c\/td\u003e\n      \u003ctd\u003e500 V (E-bus \/ signal voltage)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003ePerformance and Processing\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eResolution\u003c\/td\u003e\n      \u003ctd\u003e12 bit (16 bit presentation incl. sign)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConversion Time\u003c\/td\u003e\n      \u003ctd\u003e0.625 ms default setting, configurable, multiplex\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eInput Filter Limit Frequency\u003c\/td\u003e\n      \u003ctd\u003e1 kHz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMeasuring Error\u003c\/td\u003e\n      \u003ctd\u003e\u0026lt; +-0.3 % (relative to full scale value)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eBit Width in Process Image\u003c\/td\u003e\n      \u003ctd\u003eInputs: 4 byte\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDistributed Clocks\u003c\/td\u003e\n      \u003ctd\u003e- (not supported)\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eConnection Technology\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eWiring Method\u003c\/td\u003e\n      \u003ctd\u003eSolid conductor, flexible conductor, and ferrule; spring actuation by screwdriver\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnection Cross-Section Solid \/ Stranded\u003c\/td\u003e\n      \u003ctd\u003e0.08 to 2.5 mm² (AWG 28 to 14)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnection Cross-Section Flexible with Ferrule\u003c\/td\u003e\n      \u003ctd\u003e0.14 to 1.5 mm² (AWG 26 to 16)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStripping Length\u003c\/td\u003e\n      \u003ctd\u003e8 to 9 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003ePluggable Wiring\u003c\/td\u003e\n      \u003ctd\u003eFor all ESxxxx terminals\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eMechanical and Environmental\u003c\/h4\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eParameter\u003c\/th\u003e\n      \u003cth\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eDimensions (W x H x D)\u003c\/td\u003e\n      \u003ctd\u003e12 mm x 100 mm x 68 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eNet Weight\u003c\/td\u003e\n      \u003ctd\u003eApprox. 55 g\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMounting\u003c\/td\u003e\n      \u003ctd\u003eOn 35 mm DIN rail conforming to EN 60715 with lock\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProtection Rating\u003c\/td\u003e\n      \u003ctd\u003eIP20\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e-25 to +60 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eStorage Temperature Range\u003c\/td\u003e\n      \u003ctd\u003e-40 to +85 degC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eRelative Humidity\u003c\/td\u003e\n      \u003ctd\u003e95 %, no condensation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eVibration \/ Shock Resistance\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 60068-2-6 \/ EN 60068-2-27\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eEMC Immunity \/ Emission\u003c\/td\u003e\n      \u003ctd\u003eConforms to EN 61000-6-2 \/ EN 61000-6-4\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eEnsure all power supplies and field voltage sources are switched off and locked out before performing any mechanical or electrical work.\u003c\/li\u003e\n  \u003cli\u003eVerify the exact model number (EL3021) to ensure compatibility with your existing terminal assembly and E-bus current budget.\u003c\/li\u003e\n  \u003cli\u003eMount the terminal onto a standard 35 mm DIN rail (EN 60715) by snapping it securely into place using the integrated locking mechanism.\u003c\/li\u003e\n  \u003cli\u003eConnect signal wires using approved solid or stranded conductors with appropriate wire preparation and stripping lengths (8 to 9 mm). Actuate the spring terminals using a suitable screwdriver.\u003c\/li\u003e\n  \u003cli\u003eCheck all potential distributions, power contact jumpers, and shield connections before energizing the system.\u003c\/li\u003e\n  \u003cli\u003ePower up the controller and verify proper module recognition and LED diagnostic status within the TwinCAT engineering environment.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106532385131,"sku":"EL3021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/el3021-r3znytioo04.png?v=1776244423","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-el3021-ethercat-terminal","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}