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Phone: +86 16626708626Description
T8431 is a Tricon from ICS Triplex ® The Trusted Triple Redundancy (TMR) analog input module in security systems is a leading platform for critical control applications. As the core component of TMR architecture, it processes signals from on-site sensors (such as pressure transmitters and temperature probes) through three independent channels, and uses 2oo3 voting logic to ensure accuracy and fault detection. This design eliminates single point of failure, making it an ideal choice for SIL 3 certified systems, as downtime or erroneous control operations of these systems can lead to catastrophic consequences.
T8431
Its hot swappable design allows for maintenance without interrupting operations, while built-in diagnostic features such as channel mismatch alarms and sensor drift warnings simplify the troubleshooting process. This module is compatible with ICS Triplex’s Configurator software, allowing for intuitive configuration of scaling, filtering, and alarm thresholds, reducing project time while ensuring compliance with ISO 13849 and IEC 61508 standards.
T8431
Main features and advantages:
The main advantage of T8431lies in its triple signal processing, ensuring that each analog input is sampled by three independent channels. This design provides hardware fault tolerance (HFT) of 1, meaning that the module can identify and isolate faulty channels while continuing to operate using the remaining two channels. Each channel includes a self diagnostic function for detecting open/short circuits, overvoltage protection, and linearity checks, and is tested through Tricon ® The human-machine interface (HMI) of the system provides real-time status updates.
In terms of hardware, the module features a sturdy aluminum casing that can operate in extreme temperature (-40 ° C to 70 ° C) and vibration (IEC 60068-2-6) environments. Its low power consumption (usually 5W per channel) and fanless cooling design make it suitable for compact control cabinets without the need for additional ventilation. T8431 supports multiple signal types, including 4-20 mA, ± 10V, thermocouple, and RTD, and has a configurable input range to accommodate various sensor types.
In terms of connectivity, the module is connected to Tricon through a high-speed backplane ® Controller communication ensures deterministic data transmission within 1 millisecond. It complies with ANSI/ISA 84.00.07 and IEC 61511 standards, ensuring interoperability in global safety applications, while the built-in surge protection (2 kV isolation) prevents electrical transients in industrial environments.
T8431
Technical specifications:
Model T8431
Brand ICS Triplex
Type TMR Analog Input Module (16 Channels)
Power supply 24 VDC (± 15%), supports redundant inputs
Working temperature -40 ° C to 70 ° C
Installation method DIN rail (TS35/7.5 or TS35/15) with quick release clamp
Dimensions 171mm (height) x 48mm (width) x 203mm (depth)
Weight 1.1 kilograms
Input type 4-20 mA, ± 10V, thermocouple (J/K/T/E/R/S), RTD (2/3/4 wire system)
Resolution 16 bits (± 0.015% FS accuracy)
Redundant design TMR, 2oo3 voting, HFT=1
Certified SIL 3 (IEC 61508), PL e (ISO 13849), ATEX, IECEx, CSA, CE
Protection level IP20 (front panel), IK08 (impact resistance)
Cooling method without fan (passive)
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T8431
Application areas:
In industries where security and accuracy are crucial, T8431 is a key component in Trusted Triple Redundancy (TMR) control systems. This module is designed for high reliability environments and is used in petrochemical plants to manage Safety Instrumented Systems (SIS), achieve Emergency Shutdown (ESD), and detect fires and gases. For example, in liquefied natural gas (LNG) facilities, T8431 can ensure the safe operation of low-temperature valve systems by continuously monitoring pressure sensors and executing a quick shutdown protocol when faults are detected to prevent leaks. In nuclear power plants, it safeguards the reactor control system by providing redundant processing for critical signals, ensuring compliance with strict fault-tolerant regulatory requirements.
T8431 also plays a key role in pharmaceutical production, controlling sterile production lines through Triple Modular Redundancy (TMR). This design ensures uninterrupted operation even if one of the three independent channels fails during a single processing process. In addition, in the automotive paint shop, this module manages the control of high-temperature ovens, utilizing its sturdy structure to withstand harsh environments while maintaining precise temperature regulation to ensure consistent coating quality.
Related products:
T8432- TMR digital input module, used for discrete signals (such as limit switches, buttons).
T8433- TMR analog output module, used to control valves or drivers and provide redundant signals.
T8434- TMR relay output module, used for fault safe shutdown in safety critical applications.
Tricon CX – Main controller module, used in conjunction with T8431 to build an expandable TMR system.
T8451- High speed simulation module, used for real-time process control in rapid response systems.
T8331- Traditional analog input module for upgrading old Tricon ® System.
Installation and maintenance:
Precautions before installation:
Separate analog and digital wiring to reduce electromagnetic interference (EMI), using shielded cables for 4-20 mA signals.
Ensure that the backboard is properly grounded and that the control cabinet meets IP54 dust/waterproof requirements.
Verify whether the input range of the module matches the sensor output (such as 0-20 mA and 4-20 mA) to avoid signal scaling errors.
Maintain best practices:
Monthly through Tricon ® Configurator checks channel diagnosis and identifies errors in the difference between redundant channels.
Use hot swappable function to replace faulty modules during planned downtime, ensuring proper grounding before handling.
Calibrate the sensors connected to T8431 annually and verify signal integrity using the module’s built-in self-test (BIST).
Store spare modules in anti-static packaging and regularly power on to maintain component health.
Other product models of ICS brand:
ICS T8310
ICS TRIPLEX T9100
ICS T8231
ICS T8461
ICS TRIPLEX T8403C
ICS T8472C
ICS TRIPLEX T8110B
ICS TRIPLEX T8461
ICS TRIPLEX T8480
ICS TRIPLEX T8442
ICS T8111C
ICS TRIPLEX T8110C
ICS T8231 with power fan
ICS TRIPLEX T8310
ICS TRIPLEX T8191
ICS TRIPLEX T8431
ICS TRIPLEX T9482
ICS TRIPLEX T9110
ICS TRIPLEX T8310
ICS TRIPLEX T8431
ICS TRIPLEX T8403
ICS TRIPLEX T8461
ICS Triplex T8231C
ICS T8111C
ICS T3481A
ICS T8151C
ICS T8403C
ICS T8431
ICS T8431C
