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        3701

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        1001 reviews ｜ Need a Specific Revision?
        Triconex 3701 is a 32-point differential 0–10 VDC TMR analog input module with 12-bit conversion and continuous channel diagnostics.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3701

        • Manufacturer:
          Invensys
        • Part Number:
          3701
        • Product Family:
          Triconex
        • Product Type:
          TMR Analog Input Module
        • Stock:
          1
        • Voltage range:
          0–10 VDC
        • Architecture:
          TMR analog input
        • Input points:
          32 differential, DC-coupled
        • Isolation:
          Non-isolated
        • Input update rate:
          55 ms
        • Resolution:
          12 bits
        • Accuracy:
          <0.15% FSR, 0°C to 60°C
        • Input resistance:
          30 MΩ minimum
        • Power-off resistance:
          30 kΩ typical
        • Common-mode rejection:
          -80 dB, DC–100 Hz typical
        • Common-mode range:
          -12 V to +12 V peak
        • Leg-to-leg isolation:
          200 kΩ typical
        • Input overrange protection:
          150 VDC / 115 VAC continuous
        • Current range:
          0–20 mA with 500 Ω shunt
        • Indicators:
          Pass, Fault, Active
        • Color code:
          Light yellow
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Applications Performance Diagnostics & Protection Monitoring

        Features:

        • Acquires thirty-two differential, DC-coupled input points across a 0–10 V range.
        • Uses triple modular redundant channels and mid-value selection for each scan.
        • Provides 12-bit resolution with a documented 55 ms input update rate.
        The selected configuration is the 0–10 V member of the classic thirty-two-point differential analog-input group.

        It brings process voltage signals into the TMR controller while maintaining independent conversion and diagnostics on all three channels.

        Engineering review should cover field references, shunt values, overrange protection, termination hardware and chassis keying.

        Availability is subject to Apter Power inventory and sourcing confirmation.
        Verified resources for Triconex 3701: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Collects differential voltage measurements from process transducers in safety and critical-control systems.
        • Accepts 0–20 mA loops through the documented 500-ohm shunt arrangement.
        • Supports online maintenance strategies through the analog-input hot-spare architecture.
        • A 55 ms input update rate supports repeated acquisition across all thirty-two differential channels.
        • Twelve-bit conversion provides the documented measurement resolution for the 0–10 VDC range.
        • Accuracy remains below 0.15% of full scale across the specified 0°C to 60°C interval.
        • Three independent input channels allow the main processors to select the mid-value from triplicated data.
        • Continuous diagnostics identify a failed acquisition path while healthy paths continue to report measurements.
        • Input circuitry provides continuous overrange protection up to the documented 150 VDC or 115 VAC limit.
        • Thirty-two differential, DC-coupled points acquire 0–10 VDC process measurements.
        • A 500-ohm shunt converts a supported 0–20 mA loop into the module voltage range.
        • Pass, Fault and Active indicators provide local status for maintenance observation.
        Description
        Triconex 3701 is a TMR analog input module that acquires thirty-two differential DC voltage signals through three independent measurement paths. Each path supplies its converted data to the main processors for fault-tolerant value selection. This architecture keeps analog acquisition aligned with the controller's triplicated processing model and gives each processor path an independently developed representation of the connected signal.

        The module is used where a safety or critical-control application needs dependable observation of multiple analog variables. Its channel density supports consolidated process measurement without replacing the controller's triplicated decision architecture. Plants can consolidate pressure, flow, level and other voltage-based measurements while retaining the voting behavior expected from the installed Tricon safety architecture.

        Continuous internal checking helps keep a single acquisition-path fault from interrupting the remaining healthy data paths. The non-isolated field interface is completed through separate termination hardware and must retain the engineered signal reference. Maintaining that reference and the approved field interface ensures that channel behavior remains consistent with the application database and existing termination design.
        Alternative Names
        3701 Triconex 3701 3701 TMR Analog Input Module Triconex 3701 TMR Analog Input Module 3701 Tricon v9–v11 Analog Input Modules Triconex 3701 Tricon v9–v11 Analog Input Modules Triconex 3701 Tricon v9–v11 Analog Input Modules TMR Analog Input Module
        Technical notes
        3701 is non-isolated and mechanically keyed; confirm the external termination panel, 500-ohm current shunt and common-mode limits before insertion.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Which performance value is most useful when identifying 3701?
        Its exact identity is the thirty-two-point differential 0–10 V configuration with 12-bit conversion and a 55 ms scan.
        What compatibility boundary applies to 3701?
        Use the keyed Tricon chassis position with the documented external termination panel and interface cable.
        In what operating role is 3701 normally used?
        It converts differential process voltages for TMR safety, shutdown and critical-control logic.
        How can procurement obtain a current offer for 3701?
        Apter Power checks requested condition, quantity, documentation and delivery timing before issuing an offer.
        What must stay consistent during a 3701 replacement?
        Retain the input range, 500-ohm shunts, field references, keying, cable and termination-panel assignment.
        Which documents help Apter Power quote 3701 accurately?
        Send the module label, termination-panel number, channel signal plan, system version, quantity and destination.

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