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      3704E

      64-Point 0-5/0-10 VDC Analog Input Module
      In Stock
      Ships by Saturday, November 7
      Fast Shipping Available
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Triconex 3704E is a sixty-four-point high-density TMR analog input module. It digitizes commoned 0-5 or 0-10 VDC process signals for voted safety-control processing.

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      Technical specifications for 3704E

      • Manufacturer:
        Invensys
      • Product Category:
        DCS Systems
      • Spare Part Number:
        3704E
      • Estimated shipping dimensions:
        49x45.3x6.8 cm
      • Weight:
        3 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Module type:
        TMR analog input
      • Input points:
        64 commoned
      • Configured range:
        0-5 VDC or 0-10 VDC plus 6%
      • Isolated points:
        No
      • Input update rate:
        75 ms
      • Resolution:
        12 bit
      • Accuracy:
        <0.25% FSR, 0 to 60 degC
      • Input resistance:
        30 MOhm DC minimum
      • Power-off resistance:
        30 kOhm DC typical
      • Leg-to-leg isolation:
        200 kOhm typical
      • Normal-mode rejection:
        -1 dB at 8 Hz; -12 dB at 60 Hz; -18 dB at 120 Hz
      • Input overrange protection:
        150 VDC / 115 VAC continuous
      • 0-5 V current option:
        0-20 mA with 250 Ohm shunt
      • 0-10 V current option:
        0-20 mA with 500 Ohm shunt
      • Indicators:
        PASS; FAULT; ACTIVE
      • 0-5 V panel:
        9760-210
      • 0-10 V panel:
        9760-410
      • Basic voltage panel:
        9750-810
      • Basic current panel:
        9750-210
      View as PDF Ask for Quote

      Information

      Overview Manuals Common Applications Product Precautions
      Triconex 3704E is a sixty-four-point high-density TMR analog input module. It digitizes commoned 0-5 or 0-10 VDC process signals for voted safety-control processing.
      • Samples sixty-four commoned analog inputs through three TMR channels
      • Selects 0-5 V or 0-10 V operation through the approved TriStation configuration
      • Converts current loops with voltage-range-specific precision shunts at the termination panel
      • Supports online hot-spare replacement with continuous channel diagnostics

      3704E installs with Tricon I/O chassis and hot spare, range-matched external termination panel, 0-5 or 0-10 V field circuits, 250- or 500-ohm current-conversion shunts in an engineered Tricon high-density analog input configuration.

      The commissioning workflow covers installed-hardware matching, controlled start-up and functional verification for this 64-point 0-5/0-10 vdc analog input module.

      Important Notice: Confirm the complete 3704E marking, installed-system configuration, field connections and controlled functional test before commissioning or replacement.

      Apter Power 3704E Manuals and Guides
      Apter Power 3704E Product Technical Reference PDFApter Power 3704E Installation and Verification PDF
      The first document is an Apter Power model-specific technical reference. The second supports model-specific installation, configuration and engineering verification.
      High-density safety transmitter acquisitionSupports high-density safety transmitter acquisition through the installed 64-point 0-5/0-10 vdc analog input module in a configured Tricon system.
      Sixty-four-channel process measurementUses 3704E for sixty-four-channel process measurement after the assigned host module, field interface and channel mapping are confirmed.
      Selectable 0-5/0-10 V modernizationApplies the 3704E hardware arrangement to selectable 0-5/0-10 V modernization with controlled wiring and signal verification.
      Hot-spare analog-input maintenanceProvides a defined engineering path for hot-spare analog-input maintenance, including installation checks and final functional proof.
      Read the applicable Triconex installation instructions before work. Verify 3704E and the installed Tricon high-density analog input configuration.
      1Verify 3704E and the configured 0-5 or 0-10 V range before replacement.
      2Place all affected analog safety functions in the approved maintenance state.
      3Isolate field signals and record sixty-four channel assignments plus scaling.
      4Match 250-ohm shunts to 0-5 V current service and 500-ohm shunts to 0-10 V service.
      5Keep input overrange inside the published continuous protection limit.
      6Use ESD controls and verify the module keying and hot-spare position.
      7Inject controlled values across channel groups and compare the three TMR readings.
      8Review PASS/FAULT/ACTIVE state, scaling, alarms, and safety response before release.

      Technical notes

      Set the voltage range in TriStation, match the corresponding panel and shunt value, preserve commoned-channel wiring, and prove accuracy plus voted channel agreement after installation.

      FAQ View All FAQ

      • How is sixty-four commoned analog inputs handled during a 3704E replacement?
        Record the installed state first, isolate the associated process function, reproduce only the approved model-specific arrangement, and verify it before energization.
      • Which diagnostics should be reviewed after installing 3704E?
        Review the applicable point, module, power, communication, or load indicators for 3704E, then confirm the intended role: samples sixty-four commoned analog inputs through three tmr channels.
      • Can 3704E be substituted for a similar Triconex model without a configuration review?
        No. Confirm the exact model, companion hardware, signal execution, system version, and approved configuration before any substitution.
      • What evidence should be retained after 75 ms update and TMR agreement testing on 3704E?
        Retain the full 3704E identity, as-left connections or settings, final diagnostics, measured functional-test result, and authorization to return the affected process function to service.
      • Which installed hardware must be matched before fitting 3704E?
        Match 3704E to Tricon I/O chassis and hot spare and range-matched external termination panel, then confirm the complete physical marking and assigned Tricon high-density analog input position.
      • How should an engineer verify TriStation voltage-range selection for 3704E?
        Use the approved connection drawing and the model-specific values in Tricon Systems Technical Product Guide; preserve the as-found terminal, connector, polarity, shield, and channel identity.
      • What check is required for 250 versus 500-ohm shunts when commissioning 3704E?
        Apply a controlled signal or command within the documented range and compare the field result, controller indication, and product diagnostics before normal operation.
      • Which installation error is most important to prevent on 3704E?
        Do not interchange 3704E with an adjacent execution or alter its matched Tricon I/O chassis and hot spare; the exact electrical, channel, and connector arrangement must be retained.
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