{"product_id":"beckhoff-er2809-0021-ethercat-box-16-channel-digital-output-module","title":"Beckhoff ER2809-0021 EtherCAT Box 16-channel Digital Output Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDecentralized automation architectures requiring high channel density at the machine level benefit directly from the \u003cstrong\u003eBeckhoff ER2809-0021\u003c\/strong\u003e EtherCAT Box. This field-mountable I\/O device processes up to 16 digital output signals, distributing 24 V DC control commands directly to ohmic, inductive, and lamp loads. Housed in a robust, zinc die-cast casing, the module bypasses the need for protective electrical cabinets, establishing reliable IP67 protection directly on the machine frame. Integrated short-circuit protection and electrical isolation ensure robust system safety during transient events.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003e16 Digital Output Channels:\u003c\/strong\u003e Highly consolidated signal density for complex field-level actuator arrays.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndividually Short-Circuit Proof:\u003c\/strong\u003e Each output provides individual current limiting to shield downstream components from electrical faults.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial M8 Interfaces:\u003c\/strong\u003e Features 3-pin, A-coded output connection points and dual-channel M8 EtherCAT interface sockets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Die-Cast Housing:\u003c\/strong\u003e Designed with a zinc alloy casing to withstand severe mechanical impact and abrasive industrial conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIP65\/66\/67 Submersible Rating:\u003c\/strong\u003e Complete ingress protection against moisture, cooling lubricants, and particulate contamination.\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\u003eModular machine building and automated assembly lines with decentralized field layouts.\u003c\/li\u003e\n  \u003cli\u003eRobotic end-of-arm tooling and mechanical material handling setups.\u003c\/li\u003e\n  \u003cli\u003eHigh-vibration manufacturing environments, conveyor systems, and packaging machinery.\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 0.75rem;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem;\"\u003eValue \/ Specification\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; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eBeckhoff\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;\"\u003eER2809-0021\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;\"\u003eProtocol\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eEtherCAT\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;\"\u003eBus Interface Connection\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e2 x M8 socket, shielded, screw type\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 Digital Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e16\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 Connections\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eM8 x 1, 3-pin, A-coded\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;\"\u003ePermitted Load Types\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eOhmic, inductive, lamp load\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;\"\u003eNominal Output Voltage\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e24 V DC (-15% \/ +20%)\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;\"\u003eMax. Output Current\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003e0.5 A per channel (individual short-circuit proof), max. 4 A total sum\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;\"\u003eSwitching Times (Typical)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTON: 60 us, TOFF: 300 us\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;\"\u003eShort-Circuit Current Limit\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eMax. 1.5 A\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;\"\u003eCurrent Consumption (US Logic)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTypical 130 mA\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;\"\u003eAuxiliary Power Current (UP)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eTypical 20 mA + load current\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;\"\u003ePower Supply Connections\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eFeed: 1 x M8 male socket, 4-pin; Downstream: 1 x M8 female socket, 4-pin\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 (control voltage \/ auxiliary voltage to fieldbus)\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;\"\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: 0.75rem; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\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: 0.75rem; font-weight: bold;\"\u003eVibration\/Shock Resistance\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eConforms to EN 60068-2-6 \/ EN 60068-2-27\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;\"\u003eEMC Immunity\/Emission\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eConforms to EN 61000-6-2 \/ EN 61000-6-4\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;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIP65\/66\/67 (conforms to EN 60529)\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;\"\u003eApprovals \u0026amp; Markings\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eCE, UL\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;\"\u003eUnit Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eApprox. 450 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\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\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 \u0026amp; 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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 0.75rem;\"\u003eInterface Type\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem;\"\u003eConnector Configuration\u003c\/th\u003e\n        \u003cth style=\"padding: 0.75rem;\"\u003eFunctional Description\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; font-weight: bold;\"\u003eEtherCAT Input \/ Output\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eM8 socket, 4-pin, shielded\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eDual shielded port topology for direct daisy-chain fieldbus coupling.\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;\"\u003ePower Supply Feed\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eM8 male connector, 4-pin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eAccepts 24 V DC system power (US) and 24 V DC auxiliary load power (UP).\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;\"\u003ePower Downstream\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eM8 female socket, 4-pin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003ePower forwarding connection to downstream EtherCAT Box modules.\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;\"\u003eDigital Outputs\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eM8 x 1, 3-pin, A-coded\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.75rem;\"\u003eIndividual actuator signal delivery and return loop.\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;\"\u003eThe ER2809-0021 utilizes a die-cast zinc housing designed to substitute plastic-housed EP2809 equivalents directly. When upgrading plastic EP components to the zinc ER line, verify mechanical clearances, as the die-cast housing has minor physical envelope variations and increased physical weight. Software configurations in TwinCAT remain fully backward-compatible; swapping modules does not require rebuilding standard EtherCAT network topologies or logic tasks.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common operational failure stems from thermal compounding. While each channel supports up to 0.5 A, the maximum cumulative load across all channels cannot exceed 4 A. Operating all 16 channels at full rating simultaneously will trigger thermal shutdown or permanent circuit trace degradation. When deploying inside sealed, unventilated zones or under high ambient solar loads, construct an external thermal pathway or stagger actuator execution to manage steady-state thermal accumulation.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo minimize electrical interference and downstream communication dropouts, ensure the EtherCAT network cables use shielded M8 connectors, with the shield coupled continuously to the machine chassis ground. Separate your 24 V DC system supply (US) from the auxiliary power supply (UP) loop; doing so allows emergency-off circuits to de-energize UP load circuits while maintaining communication and diagnostic functions on the US logic loop.\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; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e Prior to commencing installation, mechanical mounting, or wiring adjustments, ensure all high-voltage and low-voltage field power supplies (US and UP) are physically disconnected. Verify that capacitors and residual circuit elements are fully discharged. Failure to isolate power systems can cause electrical shock, component damage, or unexpected industrial machinery movement.\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: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eMount the module directly to a flat, vibration-resistant machine frame surface using standard M3 bolts or DIN rail adaptors.\u003c\/p\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: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eEstablish the machine frame ground reference by securing a low-impedance grounding strap to the integrated ground contact on the module body.\u003c\/p\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: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the shielded M8 EtherCAT communication cables to the IN and OUT ports, checking that the screw collars are torqued correctly to seal against fluid ingress.\u003c\/p\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: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAttach the M8 power distribution cable to feed logic power (US) and output circuit power (UP), then secure all remaining 16 M8 sensor\/actuator channel leads.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106474451307,"sku":"ER2809-0021","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/er2809-0021-iv1ld4c2sqe.png?v=1776244797","url":"https:\/\/www.plcprotech.com\/products\/beckhoff-er2809-0021-ethercat-box-16-channel-digital-output-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}