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        T8431

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        The T8431 is a Trusted™ TMR 24V DC analog input module can connect to 40 field input devices and act as a current sink for all of them.
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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.
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        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 T8431

        • Manufacturer:
          ICS Triplex
        • Part Number:
          T8431
        • Product Family:
          Trusted Triple Modular Redundant
        • Product Type:
          Input Module
        • Stock:
          2
        • System Supply Voltage Range:
          20 to 32V dc
        • Number of Inputs:
          40 Channels
        • User Defined Thresholds:
          4-off
        • Input Current Range:
          0-22mA
        • Input Voltage Range:
          0-6 Vdc
        • Sample Update Time:
          0.5ms
        • Resolution:
          3.9uA (1/256mA)
        • Operating Temperature:
          -5°C to 60°C (23°F to 140°F)
        • Non-operating Temperature:
          -25°C to 70°C (-13°F to 158°F)
        • Weight:
          1.18 kg
        • Estimated shipping dimensions:
          3x30.3x26.4cm
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, 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 Specifications Safety Protection Connections Application

        Features:

        • High Density 40 Channel Analogue Input Interface
        • Non Incendive Field Wiring Safety Design
        • DIN Rail Mount With Integrated LED Diagnostics
        The ICS Triplex T8831 40 Channel Analogue Input Field Termination Assembly (FTA) Non-Incendive T8831 is designed to provide a reliable interface between hazardous area field devices and the Trusted T8431 Analog Input Module. It is used to collect analogue signals from non-incendive field instruments and safely transmit them to the control system. The T8831 plays a key role in ensuring signal integrity in safety-critical industrial environments. Its design supports stable operation in demanding process control applications.

        In industrial automation systems, the T8831 is commonly used where large numbers of analogue inputs must be managed efficiently. With 40 input channels per FTA, it significantly reduces wiring complexity and simplifies system architecture. The use of industry-standard 2-wire field device connections makes integration straightforward across various instrumentation setups. The ICS Triplex T8831 40 Channel Analogue Input Field Termination Assembly (FTA) Non-Incendive T8831 is especially suitable for process industries requiring reliable and centralized signal collection.

        The T8831 operates on 24 Vdc power and includes fused field power supply protection for each channel, improving operational safety and fault isolation. On-board LED indicators provide clear visibility of field power integrity, allowing quick diagnostics and maintenance. Compared with smaller analogue input termination assemblies used with earlier Trusted TMR systems, the T8831 offers significantly higher channel density and improved wiring efficiency while maintaining the same non-incendive safety concept. This makes it a strong solution for large-scale distributed control systems.

        The T8431 ICS Triplex Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        ICS Triplex T8431 Analog Input Module Manuals,Datasheets,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. All prices are shown in USD.
        ICS Triplex T8431 Analog Input Module Specs

        General

        • Manufacturer ICS Triplex
        • Model T8431
        • Condition New Original ready stock
        • Product Family T8231,T8424,T8480
        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.
        • TMR Fault Tolerance: Employs a Triple Modular Redundancy (TMR) architecture, ensuring that a single hardware failure will not cause system downtime or safety malfunction.
        • Electrical Isolation: High-level current isolation between channels and between channels and ground prevents damage to internal logic circuits from field surges.
        • Fault Limitation: Features built-in current limiting to prevent short circuits from external sensors from impacting the module power supply.
        • SIL3 Certification: Hardware design complies with IEC 61508 standards, supporting applications with the highest Safety Integrity Level (SIL3).
        • FTA Adaptor: Connects to the Field Terminal Assembly (FTA) via a dedicated cable, separating wiring from the module.
        • Hot-Swapping: Supports online module replacement while the system is running, allowing maintenance without power interruption.
        • Redundant Paths: Provides dual or triple connection paths to ensure the physical reliability of analog signals during transmission.
        • Shielded Grounding: The connection architecture supports a dedicated shielded grounding busbar, effectively suppressing common-mode interference of analog signals in the field.
        • Turbine Monitoring: Real-time acquisition of key analog parameters such as speed, pressure, and temperature of steam or gas turbines.
        • Pressure Protection: Monitoring pipeline pressure in HIPPS (High Pressure Protection System) and executing rapid overpressure cutoff.
        • Level Monitoring: Connecting to high-precision level transmitters to prevent dangerous conditions such as overflow or dry running in large storage tanks.
        • Process Safety: Used in petrochemical plants for safety interlock control of continuous variables such as temperature and flow rate.
        Description
        The T8431connects to 40 field input devices and acts as a current sink for all of them. Each input channel performs comprehensive diagnostic tests. The module employs a Triple Module Redundancy (TMR) architecture internally, providing fault tolerance for each of the 40 input channels.

        Utilizing built-in line monitoring, the T8431 can detect open and short circuits in field cables. Line monitoring for each input channel is independently configurable.

        The T8431 provides onboard Event Sequence (SOE) reporting with a 1ms resolution. Status changes trigger SOE entries. Status is determined by voltage thresholds, which can be configured for each channel. When field voltage and field return current are connected to the module's auxiliary input channels, the thresholds can be specified as a ratio of the field supply voltage.
        Alternative Names
        T843I T8461 T8442 T8480 T8431C T8461CX T8403 T8403C
        Technical notes
        The Schneider Electric T8431 is a Trusted TMR Analog Output Module providing 8 analog output channels with 4-20mA signals for safety-critical applications. It features a Triple Modular Redundant (TMR) architecture with voting logic for fault‑tolerant operation, ensuring continuous output even if one channel fails.
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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
        What are the main functions of the T8431 module?
        The T8431 is a 24VDC analog input module from the ICSTriplex Trusted® TMR series. Its main function is to acquire analog signals (voltage or current) from sensors or field devices and provide the data to a redundant control system for logic processing and control. It supports multi-channel input and can be used for critical industrial process monitoring and control.
        What types of input signals does the T8431 support?
        The T8431 module supports the following analog input signal types: Current signal: 0–22mA Voltage signal: 0–6V In addition, it supports simultaneous acquisition of multiple channels and has open/short circuit detection functions to ensure signal reliability.
        To which system platform does the T8431 belong, and how does it differ from a PLC or DCS?
        The T8431 belongs to the ICS Triplex Trusted® TMR system, a redundant control system employing a triple modular redundancy (TMR) architecture to enhance safety and reliability. Compared to traditional PLCs or DCSs: Compared to PLCs: It offers higher redundancy and safety levels, suitable for critical processes; Compared to DCSs: It places greater emphasis on safety integrity and fault tolerance, suitable for critical applications such as nuclear power and oil refining, not just process control.
        What is the country of origin and applicable fields of the T8431?
        Country of Origin: USA (Developed by ICS, some products continue to be manufactured and sold by Rockwell Automation) Applicable Fields: Critical industrial process control systems such as nuclear power plants, power plants, and oil refineries, used to acquire analog signals, monitor key process parameters, and provide them to the redundant control system for processing.

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