{"product_id":"beckhoff-er7041-2002-ethercat-box-stepper-motor-module","title":"Beckhoff ER7041-2002 EtherCAT Box Stepper Motor Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDecentralized motion control in demanding physical environments is directly addressed by the \u003cstrong\u003eBeckhoff ER7041-2002\u003c\/strong\u003e EtherCAT Box, a heavy-duty, IP67-rated module engineered for the direct connection of 2-phase stepper motors. Operating within an extensive voltage envelope of \u003cstrong\u003e8 to 48 V DC\u003c\/strong\u003e, this unit integrates a localized control system with feedback capabilities, reducing the physical footprint in control cabinets by moving power electronics directly onto the machine chassis. It features a continuous current output of \u003cstrong\u003e2 x 3.5 A\u003c\/strong\u003e and can withstand short-duration peak surges up to \u003cstrong\u003e2 x 5 A\u003c\/strong\u003e, with robust overload and short-circuit protections. By utilizing 64-fold microstepping and an integrated 24 V DC encoder interface, the module provides closed-loop control, mitigating step-loss and ensuring exact positioning accuracy under varying load conditions.\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\u003eClosed-Loop Positioning:\u003c\/strong\u003e Dedicated 24 V DC encoder interface for real-time axis verification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdvanced Microstepping:\u003c\/strong\u003e Supports up to 64-fold microstepping to ensure low-vibration and quiet motor operations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRuggedized Construction:\u003c\/strong\u003e Encased in an IP65\/66\/67 sealed housing resistant to dust, moisture, and high-pressure washdowns.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Digital I\/O:\u003c\/strong\u003e Features 2 digital inputs (24 V DC) for direct connection of limit switches or reference sensors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Peak Current Capacity:\u003c\/strong\u003e Delivers up to 5 A peak current per phase to handle high-inertia breakaway loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSynchronized Operation:\u003c\/strong\u003e Built-in Distributed Clocks (DC) support for microsecond-precise coordination across the EtherCAT network.\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\u003e\n\u003cstrong\u003eField-Level Motion Control:\u003c\/strong\u003e Decentralized drive axes on conveyor tracks, sorting tables, and processing lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackaging \u0026amp; Bottling:\u003c\/strong\u003e Feed systems, labeling stations, and volumetric pumps operating in high-moisture or washdown zones.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAssembly \u0026amp; Material Handling:\u003c\/strong\u003e Localized pick-and-place coordinate gantries and indexer plates.\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    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eBeckhoff Automation\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eModel\/Article Number\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eER7041-2002\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eFieldbus Protocol\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eEtherCAT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eBus Interface\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e2 x M8 socket, shielded, screw-lock type\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eMotor Connection Type\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eM12 x 1, 5-pin, A-coded\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eSupported Load Type\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e2-phase stepper motor (unipolar or bipolar)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eNominal Supply Voltage\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e8 to 48 V DC (via external power contact)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eOutput Current\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e2 x 3.5 A continuous; 2 x 5 A peak (overload\/short-circuit proof)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eControl Frequency\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e30 kHz current controller frequency\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eStep Resolution\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e64-fold microstepping (configurable)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e500 V (control voltage \/ power voltage)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eCurrent Consumption (US)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e120 mA from EtherCAT system voltage\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e-25 to +60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e-40 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eIngress Protection Rating\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eIP65\/66\/67 (conforms to EN 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eCompliance \u0026amp; Approvals\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eCE, EN 61000-6-2 (Immunity), EN 61000-6-4 (Emission)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003e265 g\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\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 #cbd5e0;\"\u003e\n        \u003cth style=\"padding: 8px 12px; text-align: left; font-weight: bold; width: 30%;\"\u003ePort Type\u003c\/th\u003e\n        \u003cth style=\"padding: 8px 12px; text-align: left; font-weight: bold;\"\u003eConnection Method \u0026amp; Pin Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eEtherCAT Input\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eM8 socket, 4-pin, shielded (receives communication frame)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eEtherCAT Output\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eM8 socket, 4-pin, shielded (forwards communication to next node)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003eMotor \u0026amp; Sensor Port\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eM12 socket, 5-pin, A-coded (assigned to motor phases A\/B, digital inputs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px; font-weight: bold;\"\u003ePower Supply\u003c\/td\u003e\n        \u003ctd style=\"border-bottom: 1px solid #e2e8f0; padding: 8px 12px;\"\u003eM8 plug, 4-pin (US system voltage: 24 V DC; UP load voltage: 8 to 48 V DC)\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\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe ER7041-2002 functions as the IP67 hardened variant of the standard Beckhoff EL7041 DIN-rail terminal. Both devices utilize the same underlying CoE (CAN over EtherCAT) object dictionary structures (primarily index 0x8010 for configuration), allowing control code written for the EL7041 to be migrated directly to the ER7041-2002. However, engineers must account for different physical pinouts on the M12 circular connectors compared to the spring-clamp terminal block of the EL series.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThermal performance is highly dependent on mounting configuration. When driving a motor continuously near the 3.5 A limit, the zinc die-cast housing must be mounted flat against a metallic, thermally conductive machine frame to act as a natural heat sink. If mounted on non-conductive surfaces or composite brackets in ambient temperatures exceeding 45 degC, the module is susceptible to internal thermal overload shutdowns, throwing CoE fault codes associated with driver overtemperature.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo prevent inductive kickback spikes from damaging the internal output stage, the motor power supply line (UP) must be properly decoupled. If using long cable runs (exceeding 10 meters) between the module and the stepper motor, shielded twisted-pair cables must be utilized, with the shield terminated directly to the M12 connector housing to minimize high-frequency electromagnetic emissions generated by the 30 kHz PWM chopper circuit.\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; margin: 0; font-weight: bold;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0.5rem 0 0 0;\"\u003eDo not connect or disconnect any M12 or M8 cables while the system is energized. Breaking connection under load can induce severe back-EMF voltage transients, causing permanent dielectric breakdown of the motor driver MOSFETs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; font-weight: bold; margin-right: 12px; margin-top: 2px;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the module to a flat, vibration-resistant machine frame using M4 bolts. Maximize metal-to-metal contact to aid in thermal dissipation.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; font-weight: bold; margin-right: 12px; margin-top: 2px;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the EtherCAT input and output cables using shielded M8 screw-lock connectors, ensuring a torque of 0.4 Nm is applied to preserve the IP67 moisture seal.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"display: inline-flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 24px; height: 24px; font-weight: bold; margin-right: 12px; margin-top: 2px;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConfigure the stepper motor phase currents inside the TwinCAT System Manager CoE list before enabling the axis. Setting the holding and run currents incorrectly can cause immediate motor overheating.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106469929323,"sku":"ER7041-2002","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/er7041-2002-lvl0xclxcgr.png?v=1776244811","url":"https:\/\/www.plcprotech.com\/de\/products\/beckhoff-er7041-2002-ethercat-box-stepper-motor-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}