ICS Triplex T8403 | Trusted Series 40-Channel TMR Digital Input Module

Item Details
Model T8403
Series ICS Triplex Trusted Series
Type TMR digital input module
Key Feature Adopts TMR architecture; 40 digital input channels; 24V DC power supply, 2mA input current per channel; 2500V galvanic isolation; 1ms resolution on-board SOE reporting; supports hot-swapping; -40°C to 70°C operating temperature; complies with IEC 61508 SIL 3 standard; has channel line monitoring and automatic diagnostic functions.
Primary Use Widely used in emergency shutdown systems, fire and gas detection systems in oil and gas, chemical, power generation and other industries, as well as signal acquisition and fault monitoring in process control systems.
Warranty 12-month warranty for new original products.
In Stock
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Description

Key Technical Specifications

  • Redundancy and Signal Processing: It adopts a TMR redundant architecture to avoid single-point failures. Each of its 40 input channels supports independent line monitoring, which can timely detect open and short-circuit faults of on-site wiring. The module is also equipped with configurable 50/60Hz digital filtering function, which can eliminate interference noise in the field and ensure the accuracy of signal collection. Its on-board sequence of events (SOE) reporting function with 1ms resolution can accurately record the occurrence time of industrial site events for subsequent fault traceability.
  • Safety and Maintainability: With 2500V impulse withstand voltage and galvanic isolation barrier, the module can effectively resist voltage impact and electromagnetic interference in industrial environments, protecting internal components and signal transmission safety. It supports hot-swapping through dedicated adjacent slots or intelligent slots, and maintenance personnel can replace the module without stopping the system, greatly reducing downtime. Meanwhile, the automatic diagnosis and self-test function can quickly locate and isolate faults, reducing troubleshooting time.
  • Physical and Installation Features: The module adopts DIN rail mounting design, which is convenient for integrated installation in the control cabinet. The weight of the module is about 340g, and the overall size is 12.7 x 8.9 x 2.3cm, which is compact and does not occupy too much space. It can operate stably in an environment with a humidity of 0%-95% non-condensing, and can resist vibration of 5g rms (10Hz – 500Hz) and shock of 30g (11ms half-sine pulse), adapting to harsh industrial site conditions.
    ICS TRIPLEX T8403

    ICS TRIPLEX T8403

Field Application & Problem Solved

  • Oil and Gas Emergency Shutdown System: In offshore oil platforms and onshore oil depots, the module can collect signals from gas detectors, pressure sensors and other equipment in real time. When flammable gas leakage or abnormal pressure is detected, the TMR architecture ensures that the signal will not be lost or wrong. It can quickly transmit the fault signal to the control system, which then triggers the emergency shutdown program. This solves the problem that traditional modules are prone to signal interruption due to interference, thus avoiding major safety accidents such as explosions.
  • Chemical Process Control System: In chemical production processes such as chemical reagent synthesis, there are many links that need temperature and flow monitoring. The T8403 module can connect multiple temperature and flow switches at the same time. Its strong anti-interference ability can resist electromagnetic interference from on-site mixing equipment and pumps. The 1ms fast response time ensures that the system can immediately adjust parameters when process indicators deviate, avoiding product scrap or equipment damage caused by delayed signal transmission.
    ICS TRIPLEX T8403

    ICS TRIPLEX T8403

Installation & Maintenance Pitfalls (Expert Tips)

  1. Standardized Wiring Operation: When connecting the module to sensors and other equipment, ensure that the wiring is firm. Loose wiring may cause false alarms of open-circuit faults. Meanwhile, separate the signal lines from the power lines during wiring to prevent electromagnetic interference from affecting signal collection, and avoid exceeding the 24V DC voltage range during wiring to prevent burnout of input channels.
  2. Standardized Hot-Swapping Steps: Although the module supports hot-swapping, operators should wear anti-static gloves during operation to avoid static electricity damaging internal components. Before replacement, confirm the working status of the system and ensure that the redundant channel has taken over the work. After replacement, check whether the SOE reporting function and diagnostic function are normal.
  3. Regular Diagnostic Checks: Regularly view the status indicators on the front panel of the module to confirm that each channel is working normally. Periodically test the line monitoring function of the module to verify whether it can accurately identify open and short-circuit faults. At the same time, back up the module configuration parameters to avoid parameter loss and functional failure caused by accidental operations.