{"product_id":"beckhoff-el2521-0024-ethercat-terminal-1-channel-pulse-train-output-module","title":"Beckhoff EL2521-0024 EtherCAT Terminal 1-Channel Pulse Train Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nDirectly integrating into the EtherCAT I\/O framework, the \u003cstrong\u003eBeckhoff EL2521-0024\u003c\/strong\u003e delivers 1-channel pulse train output capabilities optimized for incremental encoder simulation. Operating at a signal voltage of 24 V DC with a 1 A maximum output current, this terminal converts 16-bit velocity or position commands from the controller into precise physical frequency signals. It is ideal for testing PLC positioning tasks, regulating stepper motor drives, and performing dynamic frequency synthesis in high-speed industrial networks.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Performance:\u003c\/strong\u003e Supports base output frequencies from 0 to 500 kHz (defaulting to 50 kHz) with highly precise 10 mHz step-size increments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Differential Outputs:\u003c\/strong\u003e Provides two differential outputs (Channels A and B) alongside two dedicated digital inputs (+T and +Z) for system synchronization.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDistributed Clocks Integration:\u003c\/strong\u003e Features integrated EtherCAT distributed clocks (DC) to ensure exact microsecond-level synchronization across the network.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Signal Simulation:\u003c\/strong\u003e Configurable modes including ramp functions, travel distance control, and manual frequency overriding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eInterfacing with external stepper motor power stages and pulse-controlled servo drives.\u003c\/li\u003e\n  \u003cli\u003eSimulating incremental encoder feedback for closed-loop hardware-in-the-loop (HIL) testing systems.\u003c\/li\u003e\n  \u003cli\u003eDynamic frequency generation and reference pulse transmission in complex printing or packaging lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\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;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eBeckhoff Automation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eEL2521-0024\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eConnection Technology\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003ePulse train (frequency output)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e1 channel (2 differential outputs A, B)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eIntegrated Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 inputs (+T, +Z) at 24 V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Signal Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e5 to 24 V DC (externally supplied, 1 A max.)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOutput Frequency Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0 to 500 kHz (50 kHz default)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eResolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMax. 15 bit (16 bit + sign)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStep Size\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e10 mHz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eE-bus Current Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTypical 280 mA (load-dependent)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e500 V (E-bus \/ field potential)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eProcess Image Width\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e14-byte output, 8-byte input\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eDevice Dimensions (W x H x D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\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: 0.75rem; font-weight: bold;\"\u003ePhysical Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e50 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2.0 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0 to 55 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e-25 to 85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e95%, non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem; font-weight: bold;\"\u003eEnvironmental Ratings\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP20 protection, CE, UL, ATEX (II 3 G Ex nA IIC T4 Gc)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eConnection and Wiring Parameters\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0;\"\u003e\n        \u003cth style=\"padding: 0.75rem; text-align: left; font-weight: bold;\"\u003eConductor Type\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; text-align: left; font-weight: bold;\"\u003eCross-Section Range\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem; text-align: left; font-weight: bold;\"\u003eAWG Range\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: 0.75rem;\"\u003eSolid Wire (s)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.08 to 2.5 mm²\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAWG 28 to 14\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eStranded Wire (st)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.08 to 2.5 mm²\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAWG 28 to 14\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eWire with Ferrule (f)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.14 to 1.5 mm²\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAWG 26 to 16\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nThe EL2521-0024 is highly specialized compared to the standard EL2521 model. While the standard EL2521 utilizes a lower output stage voltage, the -0024 variant natively supports up to 24 V DC at 1 A. This makes it an ideal drop-in solution for legacy systems requiring direct 24 V actuator lines without additional signal-level shifting hardware.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nAt 280 mA typical E-bus current draw, this terminal exerts a substantial electrical load on the local bus segment. Systems utilizing multiple pulse train cards must verify the power budget of the upstream EtherCAT Coupler. If the calculated current consumption exceeds the coupler’s supply capacity, an EL9410 power supply terminal must be integrated immediately upstream of this module.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nTo prevent high-frequency noise injection into neighboring analog signals, always route the pulse output connections via shielded, twisted-pair cabling. Terminate the shield securely to the mounting plate using low-impedance grounding clamps. Strip wire jackets exactly 8 to 9 mm prior to insertion into the spring-cage terminals to prevent exposed conductors from creating short-circuits.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; border-radius: 4px;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING: ELECTRICAL HAZARD\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-size: 0.95rem;\"\u003e\n    Before mounting, removing, or wiring any EtherCAT terminal, de-energize the entire control system. Ensure that both the primary power supply to the bus coupler and all field-side 24 V DC power contacts are completely disconnected to prevent internal terminal destruction, system communications faults, or personnel injury.\n  \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; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.5rem; height: 1.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003ePosition the EL2521-0024 terminal on the 35 mm DIN rail (conforming to EN 60715) alongside the upstream EtherCAT coupler or terminal.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.5rem; height: 1.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eFirmly press the terminal downward until the metallic locking mechanism clicks onto the rail, and sliding tongues lock with the adjacent modules.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.5rem; height: 1.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eUsing a flat-blade screwdriver, actuate the integrated tension clamp terminals and insert pre-stripped solid or ferruled wiring. Release the clamp to secure the contact.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; width: 1.5rem; height: 1.5rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eApply field power and configure process data maps via Beckhoff TwinCAT System Manager software.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106500600171,"sku":"EL2521-0024","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/el2521-0024-hjlb1rp2ssa.png?v=1776244399","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-el2521-0024-ethercat-terminal-1-channel-pulse-train-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}