Product Overview
The Triconex 3451 serves as a critical relay output module for Triconex Safety Instrumented Systems. It provides 32 output points commoned in pairs for flexible field wiring. This module ensures reliable final element control in safety-critical applications across multiple industries.
Key Technical Specifications
Engineers depend on this module for its robust switching capabilities and TMR architecture. Its compact design fits easily into standard Triconex chassis configurations. Below, we detail the core technical parameters.
| Specification | Details |
|---|---|
| Product Type | Triple Modular Redundant (TMR) Relay Output Module |
| Manufacturer | Triconex (Schneider Electric) |
| Model Number | Triconex 3451 |
| Series | Triconex Safety Instrumented Systems (SIS) |
| Output Points | 32 relay outputs, commoned in pairs for wiring flexibility |
| Nominal Input Voltage | Requires +24 VDC field power for output circuits |
| Operational Voltage Range | Accepts up to +30 VDC continuously |
| Maximum Switching Voltage | Handles +33 V peak for transient protection |
| Maximum Switching Power | 12 Watts per output for inductive load control |
| Physical Dimensions (W x H x D) | 6.2 cm x 42 cm x 17.7 cm (2.44 in x 16.54 in x 6.97 in) |
| Weight | 2.32 kg (5.11 lbs) |
| Country of Origin | USA |
Detailed Features and Benefits
TMR Architecture for Unmatched System Availability
The Triconex 3451 utilizes Three-Mode Redundancy technology for fault-tolerant output control. It processes each command through three independent circuits that vote on the final state. Therefore, a single component failure cannot cause a spurious trip or prevent a safety demand.
High-Reliability Relay Switching for Critical Loads
This module delivers 12 W switching capacity for solenoids, indicators, and interposing relays. It handles inductive loads common in safety applications without additional suppression. Consequently, you achieve direct control of final elements with proven reliability.
Advanced Diagnostics for Continuous Health Monitoring
The 3451 features built-in diagnostics and self-testing capabilities during normal operation. It immediately detects and reports faults to the main safety processor. This proactive monitoring minimizes downtime by enabling rapid problem resolution.
High-Speed Processing for Real-Time Applications
You can rely on this module for mission-critical applications requiring fast output response. It processes safety demands quickly to ensure timely final element actuation. As a result, it suits emergency shutdown and process safety time-critical functions.
Robust Design for Harsh Industrial Environments
The module construction withstands vibration, temperature extremes, and electrical noise. It meets the rigorous demands of oil and gas, chemical, and power generation facilities. Therefore, you maintain reliable operation even in the most challenging conditions.
Multiple Protocol Support for Seamless Integration
The 3451 communicates effectively with various system components through supported protocols. It integrates smoothly into both new installations and existing Triconex architectures. This compatibility simplifies engineering and reduces integration complexity.
Applications Across Critical Industries
Oil and Gas Safety Systems
The Triconex 3451 excels in upstream, midstream, and downstream oil and gas applications. It controls emergency shutdown valves and blowdown panels with high integrity. You can depend on it for wellhead, pipeline, and refinery safety functions.
Chemical Processing Safety
This module provides reliable output control for chemical reactor and process safety systems. It actuates isolation valves and alarms during abnormal conditions. Consequently, you maintain safe operations in hazardous chemical environments.
Power Generation Protection
For power plants, the 3451 manages turbine trip circuits and generator protection outputs. It responds quickly to over-speed or fault conditions requiring immediate action. Thus, you protect critical generation assets from damage.
Water and Wastewater Treatment
The module controls pumps, valves, and disinfection systems in water treatment safety applications. It ensures reliable shutdown during process upsets or equipment failures. This reliability proves essential for environmental compliance and public safety.
Details
| Weight | 0.595 kg |
|---|---|
| Dimensions | 18 × 225 × 209.7 mm |



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