Products Description
ICS TRIPLEX T8042 Digital Input Module

Technical Specifications
Model:T8042
Brand:ICS TRIPLEX
Product type:TMR digital input module
System series:Trusted T8000 SIS
Bus type:Triple redundant parallel backplane bus
Compatible modules:Trusted processor boards,AI/DO output modules,backplane base units,redundant power supply
Redundancy:TMR triple modular redundant hot swap architecture
Power bus:5V DC,24VDC field power supply
Operating temperature:0~+60℃
Relative humidity:5~95% non-condensing
Weight:3.00kg
Certification:CE,TÜV,SIL3
System compatibility
This input hardware belongs to ICS TRIPLEX Trusted SIS safety instrumented system and is installed inside Trusted rack cabinet. It collects validated discrete sensor signals from field safety devices and transmits data to TMR processor module. It communicates with system engineering workstation,widely deployed in oil & gas,petrochemical and chemical plants for ESD emergency shutdown and fire & gas safety protection.
Function
T8042 serves as the high integrity safety input unit of Trusted TMR SIS. It executes safety signal acquisition commands,provides multi-channel discrete signal collection from field safety sensors. It continuously runs per-channel self-diagnosis to detect open circuit,short circuit and input circuit hardware fault in real time. Its TMR voting design prevents wrong signal judgement caused by single internal failure.
Installation
Insert the module vertically into dedicated I/O slot of Trusted SIS rack. Complete field sensor wiring and backplane bus connection,verify channel input status and fault diagnosis via Trusted Workbench engineering software.
Interface
‑Gold finger connector for triple redundant backplane bus communication
‑Field terminal block for safety sensor connection
‑Onboard TMR voting and input sampling circuit
‑LED indicators for channel running,alarm and fault prompt
Circuit feature
Conformal coated multi-layer PCB design,built-in surge and overvoltage protection circuit. Triple channel hardware voting and safety input design,fully compliant with SIL3 functional safety hardware specifications.
Feature
T8042 is a spare digital input board for ICS TRIPLEX Trusted SIS system. Common faults include input sampling circuit damage,channel detection chip failure and field wiring fault. Confirm rack slot definition and firmware compatibility before replacement.
Diagnostic
When channel open circuit,short circuit or hardware breakdown is detected,the module will trigger fault alarm and upload diagnostic messages to safety workstation.

Built‑in function
Safety discrete signal acquisition and channel hardware self-diagnosis for Trusted TMR safety rack,used as SIS digital input spare replacement.
Product Brief
T8042 is ICS TRIPLEX Trusted SIL3 multi-channel digital input module,supporting TMR triple modular redundant architecture. Verify rack compatibility before ordering. ESD anti-static protection must be followed during handling installation.