ICS TRIPLEX T8431 Trusted TMR 40-Channel High Density Analog Input Module

Product Description

T8431 is a high-density triple redundant analog input module for ICS Triplex Trusted TMR safety platform, certified SIL3. It collects 0–22mA / 0–6VDC field sensor signals such as pressure, 

temperature and flow, adopts full triplicated voting circuit to avoid single-point failure. Independent channel isolation, fast 0.5ms sampling, built-in comprehensive self-diagnosis and sequence 

of event timestamp recording. Hot-swappable rack plug-in design, core signal acquisition spare for petrochemical, power plant SIS/ESD safety cabinets.

Technical Specifications

PN: T8431, Manufacturer: ICS Triplex (Rockwell Automation), UK

Channels: 40 isolated analog input channels

Signal Range: 0–22mA current, 0–6VDC voltage

Sampling Speed: 0.5ms update cycle; Resolution: 3.9μA

Accuracy: Calibration ±0.03%, safety accuracy ±1% FS

Isolation: 2.5kV DC channel-to-backplane isolation

Power: 20–32VDC backplane supply, power consumption 15–18W

Safety Grade: IEC61508 SIL3 certified

Mount: Standard rack plug-in, hot-swappable

Temp: -5℃ ~ +60℃ operation; -40℃ ~ +85℃ storage

Dimension: 303×31×266mm, Weight ~1.15kg

Time Stamp: 1ms event resolution, ±0.5ms precision

Key Features

Full TMR triple voting architecture, fault tolerant without safety system trip.

40 high-density channels reduces cabinet slot occupation cost.

Each channel independent isolation, suppress field ground loop and EMI interference.

Ultra-fast 0.5ms sampling meets fast safety interlock response demand.

Complete hardware self-test to locate channel short/open circuit and signal drift.

1ms high-precision SOE event logging for post-fault accident analysis.

Hot-swap online replacement without shutting down SIS safety system.

Long stable measurement performance, recommended calibration cycle every 2 years.

Application Scope

Petrochemical refinery, chemical plant ESD emergency shutdown system signal acquisition module

Oil & gas pipeline, LNG terminal, offshore platform SIL3 safety instrument system (SIS) spare

Thermal power boiler, gas turbine safety interlock analog monitoring rack card

Nuclear auxiliary process safety monitoring high-density analog input unit

Pharmaceutical, hazardous material factory fire & gas safety control cabinet

Global aging ICS Triplex Trusted TMR system overhaul, spare inventory and safety upgrade