{"product_id":"triconex-3704e-64-ch-analog-input-0-5-10v-tmr","title":"Triconex 3704E 64-Ch Analog Input 0-5\/10V TMR","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e3704E\u003c\/strong\u003e is a \u003cstrong\u003e64-channel high-density analog input module\u003c\/strong\u003e manufactured by \u003cstrong\u003eInvensys Triconex\u003c\/strong\u003e for the \u003cstrong\u003eTricon safety instrumented system\u003c\/strong\u003e. It provides \u003cstrong\u003eTMR-protected acquisition\u003c\/strong\u003e of voltage and current signals from field transmitters, converting analog process variables into digital data for safety logic execution. With \u003cstrong\u003e0–5 VDC and 0–10 VDC voltage ranges\u003c\/strong\u003e plus \u003cstrong\u003e0–20 mA current capability\u003c\/strong\u003e via external shunt resistors, the 3704E delivers maximum channel density for large-scale process monitoring applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Invensys Triconex Tricon SIS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e TMR Analog Input Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 64 single-ended inputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Range:\u003c\/strong\u003e 0–5 VDC \/ 0–10 VDC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Range:\u003c\/strong\u003e 0–20 mA (requires 250 Ω or 500 Ω external shunt)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResolution:\u003c\/strong\u003e 12 bits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e Better than 0.25% of full scale (0°C to 60°C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Resistance:\u003c\/strong\u003e ≥ 30 MΩ (powered), 30 kΩ typical (powered off)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeg-to-Leg Isolation:\u003c\/strong\u003e 200 kΩ typical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormal Mode Rejection:\u003c\/strong\u003e -1 dB at 8 Hz, -12 dB at 60 Hz, -18 dB at 120 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Overrange Protection:\u003c\/strong\u003e 150 VDC \/ 115 VAC continuous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScan Time:\u003c\/strong\u003e 75 ms for all 64 points\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e 20 W typical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +60°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures \u0026amp; Benefits\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-High Channel Density:\u003c\/strong\u003e 64 single-ended inputs in one module minimize rack slots for large I\/O counts in safety systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTMR Signal Voting:\u003c\/strong\u003e Each input is processed by three independent channels with mid-value selection, ensuring correct data despite single-channel failures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage and Current Flexibility:\u003c\/strong\u003e Direct 0–5V\/0–10V inputs plus 0–20mA capability via shunt resistors accommodate diverse transmitter types.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Input Impedance:\u003c\/strong\u003e 30 MΩ minimum input resistance prevents loading effects on voltage signal sources.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOvervoltage Protection:\u003c\/strong\u003e 150 VDC \/ 115 VAC continuous protection safeguards the module from wiring errors and field transients.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the 3704E provide channel-to-channel isolation?\u003c\/strong\u003e\u003cbr\u003eA: No, the 3704E is a \u003cstrong\u003enon-isolated, commoned-input\u003c\/strong\u003e module designed for high density. For isolated analog inputs, select the \u003cstrong\u003e3703E\u003c\/strong\u003e (16-channel isolated AI).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What shunt resistor is needed for 4–20 mA inputs?\u003c\/strong\u003e\u003cbr\u003eA\u0026gt; Use a \u003cstrong\u003e250 Ω precision resistor\u003c\/strong\u003e to convert 4–20 mA to 1–5 VDC for the 0–5V range, or a \u003cstrong\u003e500 Ω resistor\u003c\/strong\u003e for 2–10 VDC on the 0–10V range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between 3704E and 3721?\u003c\/strong\u003e\u003cbr\u003eA\u0026gt; The \u003cstrong\u003e3704E\u003c\/strong\u003e provides \u003cstrong\u003e64 single-ended non-isolated\u003c\/strong\u003e inputs. The \u003cstrong\u003e3721\u003c\/strong\u003e provides \u003cstrong\u003e32 differential DC-coupled\u003c\/strong\u003e inputs with higher noise immunity for critical measurements.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInstall the module into a \u003cstrong\u003eTricon analog input slot\u003c\/strong\u003e in the chassis.\u003c\/li\u003e\n  \u003cli\u003eWire field transmitters to the \u003cstrong\u003eexternal termination panel (ETP)\u003c\/strong\u003e using shielded cable.\u003c\/li\u003e\n  \u003cli\u003eFor current loops, install \u003cstrong\u003e250 Ω or 500 Ω shunt resistors\u003c\/strong\u003e at the ETP terminals.\u003c\/li\u003e\n  \u003cli\u003eGround cable shields at \u003cstrong\u003eone end only\u003c\/strong\u003e (typically at the ETP ground bus) to prevent ground loops.\u003c\/li\u003e\n  \u003cli\u003eVerify input accuracy by comparing module readings against a \u003cstrong\u003ecalibrated handheld meter\u003c\/strong\u003e at 0%, 50%, and 100% span.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIsolation Requirements:\u003c\/strong\u003e Use the 3704E when galvanic isolation is not required between channels. For mixed ground potential environments, specify the isolated 3703E or 3708E.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSignal Type:\u003c\/strong\u003e The 3704E is ideal for voltage transmitters (0–5V, 0–10V). For direct 4–20 mA input without external shunts, consider the \u003cstrong\u003e3805E\u003c\/strong\u003e analog output or other current-input modules.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScan Time:\u003c\/strong\u003e The 75 ms update rate suits standard process control. For faster loops, verify Tricon scan configuration or select modules with higher update rates.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Triconex","offers":[{"title":"Default Title","offer_id":53993631875256,"sku":"3704E","price":217.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/3704E_1_61ca1076-9f5a-4f4e-acd2-56696b90d0d1.png?v=1787815144","url":"https:\/\/www.globalpetroparts.com\/products\/triconex-3704e-64-ch-analog-input-0-5-10v-tmr","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}