{"product_id":"invensys-triconex-3501e-digital-input-module","title":"Invensys Triconex 3501E Digital Input Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Triconex 3501E is a high-density Digital Input Module engineered for the Triconex Triple Modular Redundant (TMR) safety system. Featuring 32 isolated input points, this module is designed to interface with 115 VAC\/VDC field signals, making it an essential component for monitoring critical discrete devices such as limit switches and pushbuttons. In demanding industrial sectors like oil refining, power generation, and chemical processing, the 3501E ensures maximum process uptime through its fault-tolerant architecture. By utilizing advanced point-to-point isolation and rigorous signal processing, this module effectively eliminates common-mode interference and prevents field-side electrical faults from impacting the core logic controller.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e32-channel high-density digital input configuration.\u003c\/li\u003e\n\u003cli\u003eTriple Modular Redundant (TMR) architecture for high-availability safety applications.\u003c\/li\u003e\n\u003cli\u003eSupports 115 VAC\/VDC nominal input signals.\u003c\/li\u003e\n\u003cli\u003eRobust optical isolation (1500 VDC to 2500 VDC) per channel.\u003c\/li\u003e\n\u003cli\u003eIntegrated self-diagnostic routines for real-time health monitoring.\u003c\/li\u003e\n\u003cli\u003eSIL 3 compliant design for critical safety loops.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThe 3501E is widely utilized in safety-critical environments, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEmergency Shutdown Systems (ESD).\u003c\/li\u003e\n\u003cli\u003eFire and Gas (F\u0026amp;G) monitoring systems.\u003c\/li\u003e\n\u003cli\u003eTurbine control and burner management systems.\u003c\/li\u003e\n\u003cli\u003eHigh-integrity process monitoring in chemical and petrochemical plants.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e3501E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input (DI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Points\u003c\/td\u003e\n\u003ctd\u003e32 Channels, Isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e115 VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e90-155 VAC\/VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Range\u003c\/td\u003e\n\u003ctd\u003e47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e6-9 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePoint Isolation\u003c\/td\u003e\n\u003ctd\u003e1500 VDC to 2500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the Triconex chassis is powered down before inserting or removing the 3501E module.\u003c\/li\u003e\n\u003cli\u003eHandle the module using ESD-safe practices to prevent damage to sensitive internal components.\u003c\/li\u003e\n\u003cli\u003eEnsure proper seating in the backplane slot to maintain electrical connectivity for the TMR bus.\u003c\/li\u003e\n\u003cli\u003eUse shielded cabling for field inputs to minimize EMI\/RFI interference in high-noise industrial environments.\u003c\/li\u003e\n\u003cli\u003eVerify that field wiring polarity matches the terminal block configuration before applying power.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate ventilation around the chassis to ensure operation within the specified 0 to 60 deg C temperature range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the 3501E module?\u003c\/strong\u003e\u003cbr\u003eThe 3501E is a digital input module designed to monitor 32 discrete field signals (115 VAC\/VDC) and feed them into a Triconex TMR safety controller for processing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this module suitable for SIL 3 applications?\u003c\/strong\u003e\u003cbr\u003eYes, the 3501E is designed for use in TMR systems that meet SIL 3 requirements, provided it is installed and configured according to the manufacturer's safety manual.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the module require external power for the inputs?\u003c\/strong\u003e\u003cbr\u003eThe 3501E monitors field-powered signals; ensure your field devices are powered within the 90-155 VAC\/VDC range as specified.\u003c\/p\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":50734315143420,"sku":"3451","price":130.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_8bbca6ee-7dc5-45a9-906c-bf42cc74edc2.jpg?v=1785306434","url":"https:\/\/www.electronicplc.com\/products\/invensys-triconex-3501e-digital-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}