Products Description
ICS TRIPLEX T8850 5600389 Analog Input Module
ICS TRIPLEX T8850, part number 5600389, is an analog input module designed for TMR safety instrumented systems. It collects analog field signals and converts them into digital data for safety logic processing, supporting reliable signal acquisition for industrial safety interlock applications.


This module adopts triple modular redundant architecture with built-in channel diagnostics and signal isolation. It supports hot swap operation and meets strict industrial safety requirements. It is commonly used as spare replacement parts for petrochemical, power and oil & gas SIS emergency shutdown systems.
Main Specifications
- Brand: ICS TRIPLEX; Model: T8850; Part No:5600389; Type: Analog Input Module
- Compatible System: ICS TRIPLEX TMR Safety Instrumented System (SIS)
- Core Functions: Analog signal acquisition, A/D conversion, channel isolation, self-diagnosis, data voting
- Signal Type: 4-20mA analog input; Built-in overvoltage and overcurrent protection
- Hardware Feature: Rack mount design, TMR triple redundant, hot swappable
- Safety Feature: Channel fault detection, open/short circuit alarm, isolation protection
- Supply Status: Aftermarket spare part for SIS safety rack maintenance and module replacement
Core Functions
- Receive 4-20mA analog signals from field transmitters and convert analog signals to digital values for safety controller.
- TMR triple redundant circuit performs data voting, maintains valid signal output when single channel fails.
- Continuous channel self-diagnosis, detect open circuit, short circuit and hardware faults and trigger rack alarm.
- Signal isolation design suppresses field electrical interference and protects the internal safety circuit from surge damage.
- Hot swap function allows module replacement without shutting down the whole SIS safety system.
- Transmit valid measurement data to main processor for emergency shutdown and safety interlock logic judgment.
Application Scenarios
- Analog signal collection unit for emergency shutdown (ESD) and fire & gas safety systems.
- Fault module replacement and routine maintenance of existing ICS TRIPLEX TMR safety racks.
- Safety system retrofit and upgrade for petrochemical, oil & gas and power plant process control.
- Emergency replacement for analog input module failure to restore field safety signal acquisition.
- Spare parts stocking for maintenance teams operating ICS TRIPLEX SIS safety instrumented systems.
- Aftermarket spare supply for safety cabinet overhaul and industrial safety system integration projects.
FAQ
- Q: Can ICS TRIPLEX T8850 5600389 run independently without TMR rack?
A: It must be installed in ICS TRIPLEX safety rack and work with main processor, cannot operate standalone. - Q: What are typical module failure symptoms?
A: Abnormal channel reading, fault indicator on, signal loss, SIS rack communication and diagnostic alarm. - Q: How to complete commissioning and diagnosis?
A: Check backplane connection and field wiring, connect TRIPLEX configuration software, test channel reading and fault detection function.

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