ICS Triplex T8471 Trusted TMR Digital Output Module

Overview

The ICS Triplex T8471 is a Trusted Triple Modular Redundant (TMR) 120 VDC Digital Output Module. It ensures high availability and reliability in critical industrial control systems. The module forms a key part of the ICS Triplex Trusted TMR Safety System. It provides 32 individually isolated digital output channels with triple modular redundancy architecture. The device supports advanced diagnostics and communication via Ethernet and Modbus TCP. Its robust design enables operation in harsh environments with hot-swap capability and fast event resolution.

Technical Specifications

• Model Number: T8471

• Function: 120 VDC Digital Output Module

• Output Channels: 32 individually isolated outputs

• Output Voltage: 120 VDC nominal

• Output Current: Typically 0.5 A per channel

• Input Voltage (Logic Supply): 24 VDC

• Redundancy: Triple Modular Redundancy (TMR) architecture

• Isolation: 2500 V impulse withstand opto/galvanic isolation barrier

• Diagnostics: Triplicated diagnostic tests for current, voltage, and stuck on/off failures

• Line Monitoring: Automatic per-channel open and short circuit detection

• Over-current Protection: Automatic, fuse-less, per channel

• Communication Interfaces: Ethernet, Modbus TCP

• Sequence of Events (SOE) Resolution: 1 ms

• Hot-Swap Capability: Yes, with dedicated companion module

• Operating Temperature Range: -40°C to +85°C (some datasheets state -40°C to +70°C)

• Mounting: Trusted chassis-compatible