{"product_id":"triconex-3805h-analog-output-module-8-channel-tmr","title":"Triconex 3805H Analog Output Module 8-Channel TMR","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eTriconex 3805H\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacts as a critical execution component within the Tricon Triple Modular Redundant (TMR) safety platform. This high-availability Analog Output (AO) module translates digital commands into precise 4-20mA signals to drive final control elements such as valves and actuators. By utilizing three isolated internal channels, the 3805H ensures continuous operation even if a hardware fault occurs, making it the industry standard for Safety Instrumented Systems (SIS) and critical process control.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 3805H delivers high-precision current loops designed for rugged industrial deployment:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Points:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8 redundant output channels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCurrent Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4–20 mA (supports +6% overrange up to 21.2 mA)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eArchitecture:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTriple Modular Redundant (TMR), DC Coupled\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResolution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e12 bits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Accuracy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u0026lt;0.25% of FSR (0-21.2 mA) across 0° to 60° C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Rating:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIEC 61508 SIL3 Certified\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIsolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFull channel-to-channel and bus-to-field isolation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eComprehensive microprocessor-controlled fault detection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHot-Swap Capability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports online replacement without process interruption\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFault-Tolerant Execution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe TMR architecture executes a 2-out-of-3 voting mechanism directly on the module. This eliminates single points of failure, ensuring your safety valves remain operational during internal component transitions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Under Thermal Stress:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMost modules drift as cabinets heat up. The 3805H maintains an accuracy of \u0026lt;0.25% FSR even at 140° F (60° C), preventing \"nuisance trips\" or inaccurate valve positioning in harsh processing units.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eZero-Downtime Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module supports \"Hot-Swapping.\" Maintenance teams replace faulty units while the system remains live, bypassing the need for expensive plant shutdowns to update or repair I\/O hardware.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Diagnostics:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt-in line monitoring identifies field wiring issues and loop integrity faults instantly. The module reports these anomalies to the main processor, allowing for predictive maintenance before a loop fails.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 3805H support 0-20mA signals?\u003c\/strong\u003eThe module optimizes for 4-20mA standard loops but provides a full range up to 21.2mA to accommodate overrange requirements and specific signaling needs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I replace a 3805 (non-H version) with a 3805H?\u003c\/strong\u003eThe \"H\" designation typically indicates high-density or enhanced performance characteristics. In most Tricon racks, the 3805H maintains backward compatibility, but you must verify your specific Chassis version and TriStation 1131 software configuration before installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat condition are these units shipped in?\u003c\/strong\u003eWe supply only\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and original factory-sealed\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eunits. Every module includes a 12-month functional warranty to ensure your SIS remains compliant with safety standards.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the module handle a total loss of communication?\u003c\/strong\u003eThe module implements pre-configured fail-safe states. Upon loss of communication with the main processors, the 3805H forces outputs to a user-defined safe value (typically 4mA or 0mA) to ensure the process reaches a secure state.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":44117336260707,"sku":"3805H","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/19.2_100e0570-5026-4545-a6f0-a1cc3b8f0cf1.jpg?v=1776152035","url":"https:\/\/www.autocontrolglobal.com\/products\/triconex-3805h-analog-output-module-8-channel-tmr","provider":"AutoControl Global","version":"1.0","type":"link"}