{"product_id":"beckhoff-es2521-ethercat-terminal-1-channel-pulse-train-output-module","title":"Module de sortie train d'impulsions 1 canal Beckhoff ES2521 EtherCAT Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eOperating as a specialized interface within the Beckhoff I\/O system, the \u003cstrong\u003eBeckhoff ES2521\u003c\/strong\u003e EtherCAT Terminal delivers precise pulse train signals for motion control applications. This high-performance module converts 16-bit velocity values from the automation controller into a highly accurate \u003cstrong\u003eRS422 differential frequency output\u003c\/strong\u003e. Capable of generating base frequencies from \u003cstrong\u003e0 to 500 kHz\u003c\/strong\u003e, it is engineered to interface directly with stepper motor drivers, servo drives, and frequency converters that accept frequency\/direction or pulse train control commands. The unit features built-in \u003cstrong\u003edistributed clocks\u003c\/strong\u003e support for precise, synchronized operation across multi-axis networks, and incorporates a \u003cstrong\u003epluggable wiring design\u003c\/strong\u003e that simplifies field installation and cabinet maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1-Channel Pulse Train Control:\u003c\/strong\u003e Equipped with two differential RS422 outputs (Signals A and B) for high-speed pulse and direction generation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Operating Modes:\u003c\/strong\u003e Configurable via the controller to support pulse\/direction output, count pulses with frequency limits, or operate under direct frequency selection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Resolution:\u003c\/strong\u003e Offers a base frequency range from 0 to 500 kHz with a fine step resolution of 10 mHz for smooth acceleration ramps.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Controller Functions:\u003c\/strong\u003e Supports autonomous ramp execution and precise travel distance control natively within the hardware profile.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePluggable Wiring Interface:\u003c\/strong\u003e Uses the ESxxxx plug-in connector system for tool-free assembly, rapid module replacement, and secure terminal connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDistributed Clocks (DC):\u003c\/strong\u003e Ensures sub-microsecond synchronization with other EtherCAT devices on the segment for highly coordinated motion profiles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComprehensive Diagnostics:\u003c\/strong\u003e LED indicators supply real-time statuses for state transition, communication activity, and specific channel errors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 20px; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eDirect speed control of stepper motor power stages accepting RS422 pulse train commands.\u003c\/li\u003e\n  \u003cli\u003eInterfacing with servo drives configured for pulse-and-direction positioning modes.\u003c\/li\u003e\n  \u003cli\u003eCommanding variable frequency drives (VFDs) requiring high-resolution frequency references.\u003c\/li\u003e\n  \u003cli\u003ePrecision positioning tasks in packaging machinery, pick-and-place systems, and material handling systems.\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSpecification Value\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: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eES2521\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eConnection Technology\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003ePulse train (frequency output) with pluggable wiring harness\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNumber of Channels\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e1 channel (consisting of 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: 8px; font-weight: bold;\"\u003eDigital Inputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2 inputs (+T Latch, +Z Gate)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eInput Signal Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e24 V DC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOutput Signal Specification\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eRS422 levels, differential\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOutput Current Limit\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMaximum 50 mA per channel (short-circuit proof)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eBase Frequency Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0 to 500 kHz (Default configuration: 50 kHz)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOutput Resolution\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eMax. 15 bit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eFrequency Step Size\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e10 mHz\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProcess Image Width\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\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: 8px; font-weight: bold;\"\u003eCurrent Consumption E-bus\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eTypically 280 mA (load-dependent)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCurrent Consumption Power Contacts\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eNo current draw from external power contacts\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e500 V RMS (E-bus to field potential)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0 to +55 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\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: 8px; font-weight: bold;\"\u003eRelative Humidity\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e95% non-condensing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eIP20\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eHazardous Location Approvals\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eATEX: II 3 G Ex ec IIC T4 Gc, IECEx: Ex ec IIC T4 Gc\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eNet Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eApproximately 50 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2.0 kg\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2b6cb0; text-align: left;\"\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eTerminal Connection Point\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eSignal Assignment\u003c\/th\u003e\n        \u003cth style=\"padding: 8px; font-weight: bold;\"\u003eDescription\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: 8px; font-weight: bold;\"\u003ePin 1\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eOutput A\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eNon-inverted differential output channel A (Pulse \/ Frequency)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 5\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eOutput \/A\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInverted differential output channel A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 2\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eOutput B\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eNon-inverted differential output channel B (Direction)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 6\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eOutput \/B\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInverted differential output channel B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 3\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInput +T\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eLatch input (24 V DC) for high-speed hardware position capture\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 7\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eInput +Z\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eGate \/ zero input (24 V DC) for axis reference calibration\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 4\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e+24 V DC\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eControl power supply input for the digital logic\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePin 8\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e0 V DC (GND)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eReference potential for inputs and external drive circuits\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe \u003cstrong\u003eES2521\u003c\/strong\u003e and the \u003cstrong\u003eEL2521\u003c\/strong\u003e share identical process images, register configurations, and TwinCAT device descriptions. The sole distinction lies in the physical connector style: the ES2521 features a pluggable wiring block, enabling off-terminal wire terminations and swift physical component replacement, whereas the EL2521 incorporates standard direct-in push-in termination. System integrators can seamlessly interchange the modules in TwinCAT without requiring configuration modifications, provided the plug-in connector harness is deployed.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA key layout consideration is the high internal E-bus current consumption of the module. Consuming \u003cstrong\u003e280 mA typical\u003c\/strong\u003e from the communication backplane, the ES2521 is highly power-intensive. When constructing an EtherCAT segment containing multiple high-draw interfaces, the aggregate current must not exceed the maximum supply capability of the coupler (often capped at 2000 mA). If the E-bus power budget is breached, intermittent communication drops or localized terminal failures will manifest. Insert a dedicated power feed terminal (such as the EL9400 or EL9410) directly upstream of the module to resolve backplane load issues.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo protect signal integrity up to the full 500 kHz switching threshold, always employ shielded, twisted-pair cabling for the A\/A and B\/B differential lines. For optimal electromagnetic compatibility, terminate the cable shields as close as possible to the terminal entry point inside the enclosure using functional earth grounding clamps. Unshielded runs or running signal lines in parallel with motor power outputs will induce electrical noise, resulting in positioning inaccuracies or cumulative pulse count slippage over extended operational cycles.\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;\"\u003eIsolate all electrical power sources supplying the DIN rail assembly and field devices before commencing terminal installation or removal. Working under active voltage introduces short-circuit risks that can destroy the precision logic cards on the E-bus and permanently damage connected motor control inputs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eVerify that the selected terminal segment provides sufficient E-bus power capacity, accounting for the module's baseline 280 mA rating.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eSecurely latch the terminal housing onto the 35 mm DIN rail (EN 60715) ensuring the side E-bus slide contacts mate flush with the neighboring unit.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003ePre-wire the pluggable wiring block with the appropriate conductor cross-sections (0.08 to 2.5 mm2) before snapping the connector plug firmly into the module socket.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n  \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 12px; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n  \u003cp style=\"margin: 0; color: #2d3748;\"\u003eEnergize the backplane power supply and activate TwinCAT to scan for the new terminal, applying necessary axis-control parameters via the configuration tree.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106489459051,"sku":"ES2521","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/es2521-2qizazg4hbu.png?v=1776244822","url":"https:\/\/www.plcprotech.com\/fr\/products\/beckhoff-es2521-ethercat-terminal-1-channel-pulse-train-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}