Overview of ICS Triplex T8451 Trusted TMR Digital Output Module
1、 Basic Product Information
Project parameters
Product model T8451
Product Name Trusted TMR 24Vdc Digital Output Module
Manufacturer ICS Triplex (now part of Honeywell Process Solutions)
Product Series Trusted TMR (Triple Modular Redundancy) Series
Product status: brand new/available in stock

2、 Core functional characteristics
1. Main purpose
Function Description
Digital output execution is used to perform digital output functions and control external devices or systems
Redundant output guarantee provides redundant digital output functions to ensure high availability and security of the system
On site equipment monitoring supports automatic line monitoring of on-site equipment
Fault detection supports card stuck connection and card stuck disconnection fault detection
2. Triple redundant architecture
Architectural Characteristics Description
TMR technology triple module redundancy (TMR) technology improves system reliability and fault tolerance
Running the same program in parallel on three identical modules
Majority voting uses a majority voting system to determine the output
3、 Technical specifications and parameters
Source of parameter values
Number of channels: 40 channels
Power supply voltage 24V DC
Certification standard SIL 3 (compliant with IEC 61508)
Safety level SIL 3, T Ü V certification
Communication protocols Modbus, TCP/IP
Working temperature -40 ° C to+75 ° C

4、 Module indicator light
Indicator light description
PWR power indicator light
RUN running indicator light
ERR error/malfunction indicator light
5、 TMR system compatibility
Compatible module types, compatible model sources
Processor modules T8110B, T8110C, T8300
Input modules T8310, T8403, T8801
Communication interface T815B, T812X series
Analog modules T8431 and T8480
Power modules T8220, T8240
FTA modules T8800, T8830, T8850
6、 Application Fields
Source of Industry Application Scenarios
Petrochemical Emergency Shutdown System (ESD), Process Control
Power plant safety control system in the power generation industry
Natural gas fire and gas detection system (F&G)
Industrial automation process control, safety instrumented system
Aerospace high reliability control system
Key Control Applications for Rail Transit Safety
7、 Product packaging and warranty
Project Details
Origin: United States
Warranty period of 12 months
Packaging intact original packaging
Modular design for installation, can be installed in I/O racks
8、 Comparison of Related Models
Model Type Channel Number Voltage Description
T8451 digital output 40 channel 24V DC standard TMR digital output module
T8461 digital output 40 channels 24/48V DC switchable voltage output
T8471 digital output 40 channels 120V DC high voltage DC output
T8472 digital output 40 channel 120V AC output
T8480 Analog Output 8-Channel 24V DC Analog Output Module