{"product_id":"beckhoff-el3602-ethercat-terminal-2-channel-high-precision-analog-input-module","title":"Beckhoff EL3602 EtherCAT Terminal 2-channel High-Precision Analog Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned for high-accuracy voltage measurement within automated control topologies, the Beckhoff EL3602 is a dual-channel analog input terminal operating on the EtherCAT protocol. This high-precision module processes differential input signals across several user-configurable voltage ranges, providing reliable 24-bit resolution to the central control system. Optimized for applications requiring exceptional signal fidelity, it features electrical isolation and robust integrated filters to manage electrical noise in demanding industrial environments.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eTwo independent, differential analog input channels.\u003c\/li\u003e\n  \u003cli\u003eParameterizable measurement ranges: +\/-10 V, +\/-5 V, +\/-2.5 V, and +\/-1.25 V.\u003c\/li\u003e\n  \u003cli\u003eExceptional 24-bit resolution (including sign) for microscopic voltage tracking.\u003c\/li\u003e\n  \u003cli\u003eExtremely low measurement error of less than +\/-0.01 percent at 25 degC (relative to full scale).\u003c\/li\u003e\n  \u003cli\u003eGalvanic isolation of 500 V between the internal E-bus and the input channels.\u003c\/li\u003e\n  \u003cli\u003eConfigurable conversion times ranging from 1 ms to 400 ms (20 ms default).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eHigh-precision automated test benches and calibration systems.\u003c\/li\u003e\n  \u003cli\u003eProcess monitoring in semiconductor manufacturing and laboratory environments.\u003c\/li\u003e\n  \u003cli\u003eTension and load monitoring loops requiring highly stable differential voltage feedback.\u003c\/li\u003e\n  \u003cli\u003eMulti-axis motion systems needing micro-positioning analog feedback.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left; font-size: 0.95rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel Series\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eEL3602 (EtherCAT Terminal Series)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNumber of Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2 (Differential)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eSignal Voltage Ranges\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-10 to +10 V, -5 to +5 V, -2.5 to +2.5 V, -1.25 to +1.25 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eResolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e24 bits (including sign)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eInternal Resistance\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGreater than 200 kOhm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eInput Filter Limit Frequency\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3 kHz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eE-bus Current Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eTypically 190 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCommon-Mode Voltage (Ucm)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMaximum 35 V\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCrosstalk Attenuation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGreater than 60 dB\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e500 V (E-bus \/ signal voltage)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-25 to +60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-40 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e95 percent, non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP20\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eApprovals \u0026amp; Markings\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCE, UL, ATEX (II 3 G Ex nA IIC T4 Gc)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHousing Dimensions\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e12 mm x 100 mm x 68 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eNet Module Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e60 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.15 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e120 mm x 80 mm x 25 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eGermany\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left; font-size: 0.95rem;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eTerminal Point\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSignal Assignment (Channel 1)\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eTerminal Point\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSignal Assignment (Channel 2)\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e1\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput +\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e2\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput +\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e5\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput -\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e6\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eInput -\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e3\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eShield\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e7\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eShield\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e4\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAnalog Ground (AGND)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e8\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAnalog Ground (AGND)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen replacing or integrating the EL3602, verify the TwinCAT software version and active EtherCAT XML Device Description (ESI) files. The EL3602 features dynamic configuration via CoE (CAN over EtherCAT) variables. Ensure that older systems designed for the calibrated alternative EL3602-0010 are checked, as scaling and calibration coefficients differ within the PLC program. When using multiple EL series modules, verify that the total E-bus current budget does not exceed the limits of the coupler or the power supply terminal; the EL3602 draws a sustained 190 mA from the E-bus.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe common-mode voltage (Ucm) must be kept strictly below 35 V relative to the internal E-bus ground to prevent measurement errors and potential damage. Ground loops are the primary source of drift in 24-bit applications. If measuring floating voltage sources, ensure the AGND terminal is linked to a clean, stable system reference to prevent the differential inputs from drifting into saturation. Additionally, allow a 15-minute thermal stabilization period after powering the cabinet to ensure the internal reference reaches equilibrium for 24-bit resolution stability.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eUse twisted-pair shielded cabling for all analog signals. The shield should be terminated directly at the terminal (Terminal 3 or 7) for best high-frequency performance. In high-interference environments, utilize the TwinCAT system manager to activate the 50 Hz or 60 Hz notch filter inside the module's CoE registers. This significantly attenuates electrical line noise and maintains the module's ultra-low measurement error rating.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 0.5rem 0;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.95rem;\"\u003eAlways isolate the power supply of the entire EtherCAT station before inserting or removing terminals. Failure to de-energize the E-bus could cause damage to the internal contact pins or result in system communication failures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 12px; font-size: 0.85rem;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAlign the terminal onto the 35 mm DIN rail (conforming to EN 60715) and slide it to lock into the adjoining module using the double slot and key connection.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 12px; font-size: 0.85rem;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003ePush the terminal forward until the orange locking slide snaps securely over the rail.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 12px; font-size: 0.85rem;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eInsert a flathead screwdriver into the spring-actuated terminal openings to wire connections. Solid or stranded conductors (0.08 to 2.5 mm2, AWG 28-14) must be stripped exactly 8 to 9 mm.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; min-width: 24px; height: 24px; border-radius: 50%; background-color: #2b6cb0; color: #ffffff; font-weight: bold; margin-right: 12px; font-size: 0.85rem;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eVerify connection status using the integrated LEDs before applying full system logic power.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106469601643,"sku":"EL3602","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/el3602-antl45av5h2.png?v=1776244496","url":"https:\/\/www.plcprotech.com\/ms\/products\/beckhoff-el3602-ethercat-terminal-2-channel-high-precision-analog-input-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}