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      TRICONEX 3503E

      TMR Digital Input Module
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      TMR Digital Input Module
      DI, 24 VAC/VDC, 32 pts.
      24 VAC/VDC, commoned in 
      groups of 8, TMR with self-test
      Provides 32 independent 
      discrete digital input points

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      Technical specifications for TRICONEX 3503E

      • Manufacturer:
        Invensys
      • Product Category:
        DCS Systems
      • Spare Part Number:
        TRICONEX 3503E
      • Estimated shipping dimensions:
        1x40.6x39.8cm
      • Weight:
        2.62 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Nominal Input Voltage:
        24 VDC or 24 VAC
      • Input Frequency Range:
        Accommodates an input signal frequency range from DC up to 47.63 Hz
      • Recommended Input Range:
        20 to 42.5 VDC
      • Operating Temperature:
        -40°C to +70°C
      • Operating Range:
        20 to 42.5 VAC / VDC
      • Max Voltage:
        42.5 VAC / VDC
      • Storage Temperature:
        -40°C to +85°C
      • Relative Humidity:
        5% to 95% Non-condensing
      • Safety Compliance:
        IEC 61508 SIL 3 Certified
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      Information

      Overview Manuals Common Applications Product Precautions
      The TRICONEX 3503E is a triple-modular redundant digital input module from Schneider Electric's Triconex series. It is one of the core hardware components in safety instrumented systems and emergency shutdown systems in high-risk industrial applications.
        • Triple Modular Redundancy
        • 32 Highly Isolated Channels
        • Supports full online hot-swapping capability
      Certified by TÜV Rheinland to fully comply with the stringent SIL 3 safety standards of IEC 61508, the TRICONEX 3503E is widely deployed across high-risk process industries worldwide, including Emergency Shutdown (ESD) systems, Fire and Gas (F&G) monitoring, and hazardous chemical management. Operating at a nominal 24 VDC, the module features comprehensive online self-diagnostics that actively identify hidden loop faults and stuck-on conditions. Furthermore, its support for full online hot-swapping—combined with seamless integration via dedicated External Termination Panels (ETPs) and TriStation configuration software—empowers site engineers to conduct routine maintenance effortlessly without halting production, drastically reducing the plant’s total cost of ownership and operational complexity over its lifecycle.

      Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. 
       Invensys TRICONEX 3503E TMR Digital Input Module Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
      Oil & Gas
      Used in Emergency Shutdown (ESD) systems on offshore drilling platforms and onshore oilfields to monitor wellhead pressure switches, level switches, and Surface Safety Valves (SSVs) to prevent blowouts.

      Petroleum Refining
      Deployed in high-risk core units like hydrocrackers and catalytic crackers to collect reactor temperature and pressure alarm switch signals, instantly triggering safety interlocks if process limits are exceeded.

      Nuclear Power
      Applied in Nuclear Reactor Protection Systems (RPS) and engineered safety features systems to reliably collect critical switch signals such as reactor coolant pressure and water levels, ensuring absolute fault-tolerant control.

      Thermal Power
      Integrated into Burner Management Systems (BMS) for boilers to collect digital signals like ignition feedback, low fuel pressure, and furnace flame-out detectors in real time to prevent boiler explosions.

      Iron, Steel & Metallurgy
      Deployed in blast furnace and converter cooling water monitoring and gas recovery systems to collect key valve position feedback and fault switch signals, preventing gas poisoning and explosions.

       When using the TRICONEX 3503E module, ensure it is inserted vertically into the dedicated Tricon chassis with locking fasteners fully secured. All field 24 VDC switch signal wires must be routed through the matching External Termination Panel (ETP), with strict grounding protection implemented to eliminate electrical surges. Although the module supports online hot-swapping, it is crucial to verify the diagnostic error codes via TriStation 1131 software and ensure at least one redundant channel is healthy before performing a replacement, preventing any accidental system trips during operation.

      FAQ View All FAQ

      • What is TRICONEX 3503E?
        TRICONEX 3503E is a Digital Input Module for the Tricon control system by Schneider Electric, featuring high reliability and fault tolerance.
      • How does TRICONEX 3503E work?
        It utilizes a Triple Modular Redundancy (TMR) architecture to collect field signals through three independent channels and ensures absolute data accuracy via a voting mechanism.
      • How many input channels does TRICONEX 3503E support?
        This module typically supports 32 isolated digital input channels.
      • How to correctly install the TRICONEX 3503E module?
        It should be inserted vertically into a dedicated Tricon chassis slot, ensuring the locking fasteners are securely in place.
      • Does TRICONEX 3503E support hot-swapping?
        Yes, it supports online hot-swapping, allowing the replacement of a faulty module without shutting down the system.
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