{"product_id":"beckhoff-ep3744-0041-ethercat-box-pressure-and-digital-module","title":"Beckhoff EP3744-0041 EtherCAT Box Pressure and Digital Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDirect machine-level signal acquisition and pressure monitoring are centralized efficiently using the \u003cstrong\u003eBeckhoff EP3744-0041\u003c\/strong\u003e EtherCAT Box. This ruggedized, IP67-rated module combines relative pressure sensing with local digital I\/O channels, eliminating the need for protective control cabinets in decentralized architectures. Engineered with \u003cstrong\u003efour relative pressure inputs\u003c\/strong\u003e, \u003cstrong\u003esix digital inputs\u003c\/strong\u003e, and \u003cstrong\u003etwo short-circuit proof digital outputs\u003c\/strong\u003e, the device processes pneumatic diagnostics and local sensor\/actuator signals over a high-speed EtherCAT interface. Its compact form factor and direct-mounting features make it an essential component for demanding industrial environments where space, speed, and environmental resistance are critical.\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\u003eRuggedized IP67 Housing:\u003c\/strong\u003e Designed for direct machine installation without cabinets, providing dust and moisture protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Range Relative Pressure Sensing:\u003c\/strong\u003e Measures air pressure across selectable ranges of 0 to 1 bar (0 to 15 psi) and -1 to 1 bar (-15 to 15 psi).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Pneumatic Connections:\u003c\/strong\u003e Direct 6 mm push-in fittings for standard compressed air lines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Speed Distributed Clocks:\u003c\/strong\u003e Fully supports EtherCAT Distributed Clocks for ultra-precise synchronization and microsecond-level timing accuracy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShort-Circuit Proof Outputs:\u003c\/strong\u003e 2 digital outputs supporting up to 0.5 A per channel with individual overload protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial Standard Compliance:\u003c\/strong\u003e Inputs conform to EN 61131-2 Type 1\/3 specifications for reliable industrial logic signaling.\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\u003ePneumatic System Monitoring:\u003c\/strong\u003e Real-time pressure logging and diagnostics on localized valve terminals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVacuum Gripper Automation:\u003c\/strong\u003e Suction-force confirmation and state monitoring in pick-and-place packaging systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOn-Machine Sensor Hubs:\u003c\/strong\u003e Decentralized aggregation of proximity sensors and local digital actuators.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHarsh Industrial Testing:\u003c\/strong\u003e Pressure decay leak testing and verification under wide temperature ranges.\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 #cbd5e0;\"\u003e\n        \u003cth style=\"border: 1px solid #cbd5e0; padding: 8px; text-align: left;\"\u003eSpecification Parameter\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #cbd5e0; padding: 8px; text-align: left;\"\u003eValue \/ Configuration\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eBeckhoff\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eEP3744-0041\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eProtocol\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eEtherCAT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eAnalog Inputs\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e4 x relative pressure inputs (6 mm push-in fittings)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eDigital Inputs\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e6 x digital inputs (M8 connections)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eDigital Outputs\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e2 x digital outputs (M8 connections)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePressure Measuring Range\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e0 to 1 bar (0 to 15 psi) or -1 to 1 bar (-15 to 15 psi)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eMeasurement Uncertainty\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e3% of full scale value\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePressure Resolution\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e1 mbar per digit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eConversion Time\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eNominal 3.5 ms\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eDigital Input Filter\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e10 us (EN 61131-2, Type 1\/3)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eMax. Output Current\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e0.5 A per channel, individually short-circuit proof\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eCurrent Consumption (US)\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e120 mA\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePower Feed Connection\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e1 x M8 male socket, 4-pin\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eDownstream Connection\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e1 x M8 female socket, 4-pin\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eElectrical Isolation\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e500 V (test voltage)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e-25 to +60 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eStorage Temperature\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e-40 to +85 degC\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eProtection Rating\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eIP65 \/ IP66 \/ IP67 (conforms to EN 60529)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eApprovals\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eCE, UL\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eShipping Weight\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; 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 #cbd5e0;\"\u003e\n        \u003cth style=\"border: 1px solid #cbd5e0; padding: 8px; text-align: left;\"\u003ePort Type\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #cbd5e0; padding: 8px; text-align: left;\"\u003eConnector Style\u003c\/th\u003e\n        \u003cth style=\"border: 1px solid #cbd5e0; padding: 8px; text-align: left;\"\u003eFunctional Assignment\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003eDigital Inputs \/ Outputs\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eM8, 4-pin female\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eLocal digital signals (sensors\/actuators)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePressure Ports\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003e6 mm push-in fittings\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eRelative pneumatic pressure measurement (dry air)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePower Feed\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eM8, 4-pin male\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eControl voltage (US) and peripheral\/load voltage (UP)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px; font-weight: bold;\"\u003ePower Downstream\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eM8, 4-pin female\u003c\/td\u003e\n        \u003ctd style=\"border: 1px solid #cbd5e0; padding: 8px;\"\u003eLoop-through connection to adjacent EtherCAT Box modules\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 EP3744-0041 integrates multi-channel pressure sensing and digital I\/O in a single physical housing, providing an alternative to deploying separate EP3174 analog input modules and EP1008 digital input blocks. It requires TwinCAT 2.11 or higher for complete configuration. Always ensure the matching XML Device Description (ESI) is imported into your TwinCAT system manager to enable CoE parameter access for switching the measuring ranges.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe integrated pressure sensors are calibrated for dry, non-corrosive air. Operating the pneumatic lines without high-quality filtration (minimum 5-micrometer pre-filter and oil separator) will cause moisture or oil residue to settle inside the internal silicon membranes. This leads to drift in pressure readings and, in extreme cases, permanent offset error or diaphragm failure. Ensure that pneumatic lines are fully cleared of condensation before startup.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo maintain the integrity of the EtherCAT network in high-vibration applications, utilize pre-assembled, shielded M8 cables from Beckhoff or matching industrial suppliers. The module's integrated grounding tab must be securely bonded to a clean, unpainted metallic machine frame. Poor grounding will result in packet losses or CRC errors on the downstream EtherCAT segments during high-frequency solenoid switching.\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 De-energize all system components (including control voltage US and load voltage UP) and fully discharge the compressed air lines to 0 bar before initiating any installation, wiring, or pneumatic service work. Hot-plugging pneumatic fittings or working under pressure can lead to structural damage, system faults, or physical injury.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; color: #2d3748;\"\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    \u003cdiv\u003e\n      \u003cstrong\u003eMechanical Mounting:\u003c\/strong\u003e Secure the housing directly to the machine structure using two M3 screws. Verify that the rear metal grounding plate makes clean, low-resistance contact with the mounting surface.\n    \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: 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    \u003cdiv\u003e\n      \u003cstrong\u003ePneumatic Connection:\u003c\/strong\u003e Cut the 6 mm OD pneumatic tubing exactly perpendicular. Push the tubing firmly into the pneumatic fitting until it clicks past the internal seal ring. Pull gently to confirm the locking mechanism is engaged.\n    \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: 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    \u003cdiv\u003e\n      \u003cstrong\u003eElectrical \u0026amp; Network Wiring:\u003c\/strong\u003e Attach the M8 digital signal and EtherCAT cables. Tighten the coupling nuts to a specified torque of 0.4 Nm to ensure the IP67 protection rating is fully maintained.\n    \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: 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    \u003cdiv\u003e\n      \u003cstrong\u003ePower \u0026amp; Verification:\u003c\/strong\u003e Apply the US and UP power supplies. Verify the LED diagnostics: the green \"Run\" LED must remain solid, and the \"Link\" LEDs on the EtherCAT ports should flash green during network transactions.\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"BECKHOFF","offers":[{"title":"Default Title","offer_id":53106465833323,"sku":"EP3744-0041","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/ep3744-0041-hr0ay0hrbfv.png?v=1776244674","url":"https:\/\/www.plcprotech.com\/id\/products\/beckhoff-ep3744-0041-ethercat-box-pressure-and-digital-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}