{"product_id":"el3022-beckhoff-2-channel-analog-input-terminal-4-20-ma-differential","title":"EL3022 Bornier d'entrée analogique 2 canaux 4–20 mA différentiel BECKHOFF","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEL3022 (EL3022)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a professional-grade 2-channel analog input terminal designed for the EtherCAT I\/O system. It is specifically engineered to process\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecurrent signals using\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003edifferential input technology\u003c\/strong\u003e. Unlike single-ended modules, the EL3022’s differential inputs provide superior noise rejection and eliminate ground loop interference, making it the ideal B2B solution for high-precision measurements in electrically noisy industrial environments. With a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e12-bit resolution\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand integrated signal filtering, this terminal is a staple for critical process monitoring, including pressure, flow, and level sensing in chemical, energy, and manufacturing sectors.\u003c\/p\u003e\n\u003ch3\u003eHardware Architecture and Differential Advantage\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEL3022\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003earchitecture centers on its two independent differential inputs. By measuring the voltage difference between two signal lines rather than referencing a common ground, the module can effectively cancel out common-mode noise that often plagues long cable runs in industrial facilities. It supports a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eCommon-mode voltage (\u003cspan class=\"math-inline\"\u003e$U_{CM}$\u003c\/span\u003e)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10 V\u003c\/strong\u003e, providing significant flexibility in various field wiring topologies.\u003c\/p\u003e\n\u003cp\u003eThe terminal features a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1 kHz hardware filter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand software-activatable\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFIR\/IIR filters\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto ensure signal stability. Data is converted via a multiplexing process with a default time of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.625 ms\u003c\/strong\u003e, ensuring a steady stream of high-quality data to the EtherCAT master. The module is housed in a standard\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e12 mm\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epolycarbonate casing, featuring\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e500 V electrical isolation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto protect the E-bus backplane from field-side surges.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eAttribute\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eEL3022\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBECKHOFF\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 (Differential)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSignal Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 to 20 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e12 bit (16-bit presentation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eConversion Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.625 ms (Default, configurable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Filter Frequency\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 kHz\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCommon-Mode Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMax. 10 V\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMeasuring Error\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e\u0026lt; ±0.3 % (relative to full scale)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTypically 85 Ω + diode voltage\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCurrent Consumption (E-bus)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eTypically 130 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-25 to +60 Celsius\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eApprovals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eCE, UL, ATEX (II 3 G Ex nA IIC T4 Gc)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy choose the EL3022 differential input over a single-ended model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDifferential inputs are essential when sensors are located far from the controller or when the sensors and the PLC operate on different ground potentials. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEL3022\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eignores the noise that appears on both signal wires equally, ensuring that only the actual sensor data is processed by the 12-bit converter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this terminal require an external power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe logic and communication of the EL3022 are powered via the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eE-bus\u003c\/strong\u003e. However, the 4–20 mA current loop for the sensors typically requires an external 24 V DC supply, which can be distributed via separate power feed terminals in the EtherCAT segment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I monitor for sensor failure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. Since the signal uses the \"live zero\"\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e4 mA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003estandard, any reading of 0 mA (or significantly below 4 mA) indicates a wire break or sensor malfunction. The EL3022 supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elimit value monitoring\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto automate these diagnostic alerts in the TwinCAT environment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWiring for Maximum Precision:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eshielded twisted-pair cables\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor all differential connections. To maximize the noise-rejection capabilities of the EL3022, the shield should be connected to the functional earth (FE) at the terminal side using a low-impedance shield clamp.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFor slow-moving process variables (like temperature or tank levels), activate the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eFIR filter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003evia the CoE (CanOpen over EtherCAT) settings to achieve a highly smoothed signal. For more dynamic processes, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eIIR filter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides a faster response with effective noise suppression.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance and Replacement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe EL3022 features\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003epluggable wiring level (ES series)\u003c\/strong\u003e. This allows for the removal of the terminal block without disconnecting individual wires, facilitating rapid servicing and minimizing the risk of wiring errors during module replacement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEL3022\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a robust \"problem-solver\" for analog signal integrity. Its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e12-bit resolution\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides ample precision for standard industrial applications, while its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eATEX\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ecertification allows for safe deployment in Zone 2 hazardous areas. Compliance with\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eEN 61000-6-2\/4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eensures that the terminal remains operational in environments with heavy electromagnetic interference. For B2B machine builders and system integrators, the EL3022 offers a reliable, globally-certified interface that simplifies the integration of sophisticated analog instrumentation into the EtherCAT ecosystem.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106699043179,"sku":"EL3022","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/el3022-gpdi3vjpfyr.png?v=1776244426","url":"https:\/\/www.plcprotech.com\/fr\/products\/el3022-beckhoff-2-channel-analog-input-terminal-4-20-ma-differential","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}