{"product_id":"invensys-triconex-3505e-di-24-vdc-low-threshold-32-pts","title":"Invensys Triconex 3505E DI, 24 VDC, low threshold, 32 pts","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eTriconex 3505E\u003c\/strong\u003e is a 32-channel \u003cstrong\u003edigital input module\u003c\/strong\u003e designed for safety-critical applications requiring \u003cstrong\u003e24 VDC\u003c\/strong\u003e low-threshold signal detection. As part of the \u003cstrong\u003eTriconex safety instrumented system (SIS)\u003c\/strong\u003e, it uses \u003cstrong\u003eTriple Modular Redundancy (TMR)\u003c\/strong\u003e to ensure maximum fault tolerance and system availability in environments such as oil \u0026amp; gas, power generation, and chemical processing.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple Modular Redundancy (TMR):\u003c\/strong\u003e Three independent input channels per point ensure fault-tolerant processing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot-Spare Capability:\u003c\/strong\u003e Supports online replacement without disrupting plant operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStuck-ON Detection:\u003c\/strong\u003e Monitors for failed input devices in de-energize-to-trip designs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical Isolation:\u003c\/strong\u003e 1500 VDC isolation protects internal logic from external surges\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Field Power Required:\u003c\/strong\u003e Inputs are powered by field devices for simpler wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32 (grouped in 8s, commoned)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20–42.5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTurn-On Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;12 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTurn-Off Threshold\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;4 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Input Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;8 ms (ON), \u0026lt;15 ms (OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25 kΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1500 VDC (point-to-logic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDiagnostics\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 LED per channel, plus PASS, FAULT, ACTIVE indicators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTricon chassis, with External Termination Panel (ETP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eSIL 3\u003c\/strong\u003e (per IEC 61508)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Invensys System","offers":[{"title":"Default Title","offer_id":42384281731139,"sku":"3505E","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/5810\/3107\/files\/3505E_2.png?v=1750842213","url":"https:\/\/www.plcdcspro.com\/products\/invensys-triconex-3505e-di-24-vdc-low-threshold-32-pts","provider":"PLC DCS Pro Ltd.","version":"1.0","type":"link"}