40-Channel TMR Output
40 TMR digital outputs in five isolated groups support 24V/48V (18–60Vdc), delivering 0.75A per channel and 6A per group for actuator drives.
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2026-07-13 09:45:42
Rockwell Automation Releases ICS TRIPLEX T8461 Trusted TMR Digital Output Module
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ICS Triplex Trusted TMR Processor
ICS Triplex Trusted TMR Safety System Overview
The ICS Triplex Trusted® TMR system uses Triple Modular Redundancy (2oo3) with three synchronized processors to deliver fault-tolerant control. Hardware voting masks single faults, while integrated diagnostics, automatic resynchronization, and hot-swappable processor replacement maintain continuous operation, high availability, and reliable safety performance without interrupting the running application.
ICS TRIPLEX T8461 Trusted TMR Digital Output Module
The ICS TRIPLEX T8461 is a 40-channel Trusted TMR digital output module supporting 24V/48V DC with triple modular redundant architecture, per-channel automatic line monitoring, comprehensive diagnostics, 1ms SOE resolution, online hot-swapping, and IEC 61508 SIL 3 certification for critical safety applications.
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Auto Diagnostics & Line MonitoringT8461 continuously monitors each output for open/short/load faults, with real‑time diagnostics ensuring reliable operation. -
1ms SOE RecordingThe module captures output state changes with 1ms timestamp accuracy, enabling precise event tracking, fault analysis, and system diagnostics
T8461 vs T8461C: Key Differences: Both are 40-channel Trusted TMR 24/48Vdc digital output modules featuring SIL 3 certification, triple modular redundancy, and 1ms SOE resolution. T8461 is the standard base model covered in official Rockwell documentation, while T8461C represents a hardware revision or enhanced variant within the same Trusted product family for safety-critical applications.
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Contact UsFrequently Asked Questions
Q:What is "TMR" and how does it protect the system?
A:TMR stands for Triple Modular Redundant. The module employs three identical slices of circuitry and processors for every channel. The field signal outputs are voted on (six-element voted output array). If one slice fails, the other two override it, allowing the module to maintain continuous, fault-tolerant operation without process interruption.
Q:What is the channel capacity and configuration of the T8461?
A:The module provides 40 TMR digital output channels. These channels are divided into 5 independent power groups, with each group managing 8 distinct outputs.
Q:What does Triple Modular Redundant (TMR) mean for this module?
A:The internal circuit architecture is fully triplicated. The module routes output signals through three separate parallel internal paths, using voting mechanisms to tolerate internal component failures without interrupting the field safety function..
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