TRICONEX 3481 S2 Analog Output Module 8-Channel TMR
Manufacturer: Triconex
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Part Number: 3481 S2
Condition：New with Original Package
Product Type: Analog Output Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The TRICONEX 3481 S2 acts as a high-performance, safety-critical analog output interface for Tricon and Trident Safety Instrumented Systems (SIS). This module utilizes proprietary Triple Modular Redundancy (TMR) technology to provide 8 independent, software-configurable channels. It delivers precise 4–20 mA or voltage signals to final control elements like actuators and control valves, ensuring zero single points of failure in hazardous environments. We supply this unit as 100% Brand New and Original, ready for immediate deployment in mission-critical process safety applications.
Technical Specifications
The 3481 S2 combines industrial-grade signal conditioning with the highest levels of hardware fault tolerance.
| Category | Specification |
| Manufacturer | Triconex (Schneider Electric) |
| Module Type | Analog Output (TMR) |
| Channel Count | 8 Configurable Channels |
| Output Signal Ranges | 4–20 mA, 0–10 VDC, 0–5 VDC |
| Architecture | Triple Modular Redundancy (TMR) |
| Dimensions | 178 mm × 44 mm × 120 mm |
| Weight | 0.6 kg |
| System Compatibility | Tricon v9/v10/v11 & Trident Systems |
| Operating Temp | Standard Industrial Range (0°C to +60°C) |
| Certification | SIL3 Capable |
Engineering Advantages
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TMR Fault Tolerance: The 3481 S2 employs three isolated, redundant legs for every output signal. The hardware voting mechanism ensures that even if one internal circuit path fails, the module maintains a continuous, accurate output to the field, eliminating unplanned trips.
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Software-Defined Versatility: Engineers configure each of the 8 channels independently for current (4–20 mA) or voltage (0–10 V / 0–5 V) signals. This flexibility allows one module to manage diverse field assets, from standard positioners to specialized variable speed drives.
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Comprehensive Self-Diagnostics: The module executes continuous background checks on its D/A converters and output circuitry. It identifies and reports internal discrepancies instantly, allowing for proactive maintenance before a system-wide fault occurs.
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Optimized Power Efficiency: The refined circuitry of the S2 (Series 2) version minimizes heat dissipation within the Tricon chassis. This reduces thermal stress on neighboring modules and extends the overall service life of the SIS rack.
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Seamless Hot-Swapping: Maintenance personnel replace the 3481 S2 without powering down the Tricon controller or disrupting the process. The redundant architecture ensures the safety function remains online during the hardware swap.
FAQs
1. Does the 3481 S2 support both Tricon and Trident platforms?
Yes. Triconex designed the 3481 S2 for cross-platform compatibility, allowing it to function as a reliable analog interface in both full-scale Tricon systems and compact Trident controllers.
2. How does the TMR technology vote on an analog output?
Unlike digital inputs that use a 2-out-of-3 vote, the 3481 S2 utilizes a hardware-level "Current Summing" or "Median" selection process. This ensures that the physical signal reaching the field transmitter represents the consensus of the three redundant internal legs.
3. Can I mix 4-20mA and 0-10V signals on the same 3481 S2 module?
Absolutely. You can configure each of the 8 channels independently via the TriStation 1131 software. This allows you to drive a mix of current-loop actuators and voltage-controlled equipment from a single module.
4. What is the standard lead time and warranty?
We maintain the TRICONEX 3481 S2 in stock for shipment within 1–3 days. Every unit carries a 1-year factory-standard warranty and arrives in its original, sealed Schneider Electric / Triconex packaging.