{"product_id":"triconex-ai3351-tricon-sis-analog-input-module","title":"Triconex AI3351 Tricon SIS Analog Input Module","description":"\u003ch2\u003eTRICONEX AI3351 Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTRICONEX AI3351\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eTRICONEX 3351\u003c\/strong\u003e Analog Input Module, operates as a dedicated hardware component for converting field analog signals into digital values within Tricon SIS platforms. This hardware element samples analog currents from field transmitters and provides digital representations to the main processing units. The module manages input signal filtering and digitizes the electrical values via independent internal conversion circuits.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eAI3351\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTRICONEX (Schneider Electric)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.5 kg (4.10 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e177.8 mm x 101.6 mm x 228.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal loop power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e32 isolated analog input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Range\u003c\/td\u003e\n\u003ctd\u003e4-20 mA (standard), 0-10 VDC (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-0.1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Isolation\u003c\/td\u003e\n\u003ctd\u003e2500 V RMS channel-to-channel and channel-to-backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e16 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eIEC 61508 SIL3, TÜV, CE, UL Class I Div 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTriple Modular Redundancy \u0026amp; Galvanic Isolation\u003c\/h3\u003e\n\u003cp\u003eThe hardware incorporates a Triple Modular Redundancy (TMR) 2oo3 architecture to execute fail-safe state execution at the input processing level. The 32 isolated analog input channels split the incoming 4-20 mA current signals into three independent legs. Each leg routes through a dedicated analog-to-digital converter (ADC) and microprocessor circuit. The field data undergoes continuous software and hardware voting before logic execution. Galvanic isolation rated at 2500 V RMS prevents electrical surges or channel-to-channel cross-talk from corrupting the separate leg processing paths. If an individual channel experiences a hardware failure, the remaining legs sustain uninterrupted voted processing while triggering internal diagnostics.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the module execute a hot-swap sequence without corrupting live input data loops?\u003c\/p\u003e\n\u003cp\u003eA: The slot architecture supports complete online hot-swapping. When you insert a replacement module into the adjacent slot on a dual baseplate, the TriBus backplane synchronization routine automatically transfers channel baseline profiles, enabling active processing without taking the safety loops offline.\u003c\/p\u003e\n\u003cp\u003eQ: What are the diagnostic behaviors of the module when an open loop or wiring fault occurs?\u003c\/p\u003e\n\u003cp\u003eA: The internal diagnostics run continuous background checks on loop current validity. An out-of-range signal drop below the 4 mA threshold or an open loop triggers a fault state inside the channel logs, changes the respective channel status bit, and illuminates the hardware FAULT LED.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination Baseplate Alignment\u003c\/strong\u003e: Mount the module exclusively into compatible termination baseplates (such as the 3351-TB assembly). Ensure the high-density backplane pins align squarely with the socket prior to applying locking pressure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Ground Vectoring\u003c\/strong\u003e: Terminate all field transmitter instrument cable shields at the designated chassis ground bar. Do not ground the shield at both the field device and the Triconex panel to prevent creating ground loops that degrade the 12-bit resolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Impedance and Sizing\u003c\/strong\u003e: Verify the external 24 VDC nominal loop power supply capacity accounts for a fully loaded 32-point configuration, allowing for adequate voltage margins under maximum over-range current scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Enclosure Management\u003c\/strong\u003e: Maintain adequate vertical air spacing within the enclosure cabinet to conform to the continuous operating temperature limits of -20 deg C to +60 deg C without experiencing convective choking.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":43723340480602,"sku":"AI3351","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/166._50cb6e36-6dce-4694-8925-ebd81c337317.jpg?v=1784857906","url":"https:\/\/www.spareoil.com\/es\/products\/triconex-ai3351-tricon-sis-analog-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}