TRICON AI2351 | 7400210-010 | Analog Input Safety Module

Technical Specifications

Key Features and Advantages

The AI2351 safety module provides fault-tolerant analog signal processing with triple redundant circuitry, achieving 99.999% diagnostic coverage for critical applications. Its patented drift compensation technology maintains measurement accuracy within ±0.05% over 10-year operation.

Advanced diagnostics: Features continuous channel health monitoring with predictive failure alerts. The module’s galvanic isolation prevents ground loops while supporting HART 7 protocol communication for smart transmitter integration.

Safety compliance: Certified for SIL 3 applications with built-in proof test interval calculations. The hot-swappable design allows module replacement without shutting down the Tricon system, minimizing process downtime.

AI2351

Application Areas

In offshore platforms, the AI2351 monitors critical safety parameters including wellhead pressures and gas detection sensors. Its SIL 3 certification ensures compliance with emergency shutdown (ESD) system requirements in hydrocarbon processing facilities.

Nuclear power plants utilize this module for reactor coolant temperature monitoring, leveraging its radiation-hardened components. The wide temperature range (-40°C to +70°C) makes it suitable for arctic pipeline pressure transmitters.

Pharmaceutical manufacturing applications benefit from its HART communication capability for smart flow transmitters in cleanroom environments, maintaining FDA 21 CFR Part 11 compliance.

Related Products

DI2351: Digital input module for safety systems
AO2351: Analog output module with HART support
NCM2351: Network communication module
AI2352: High-density 16-channel version
TMR2351: Triple modular redundant processor

Installation and Maintenance

Installation preparation: Ensure proper chassis grounding (<1Ω) before installing the AI2351. Use Belden 9501 equivalent shielded cable for field connections, maintaining 50mm separation from power cables. Configure module addressing via TriStation 1131 software.

Maintenance recommendations: Perform annual calibration verification using Triconex calibration tools. Replace module every 10 years as part of safety lifecycle management. Always maintain spare modules in ESD-protected storage with charge retention.

Product Assurance

The AI2351 undergoes accelerated life testing equivalent to 20 years of operation. Schneider Electric provides SIL 3 certification documentation and safety manual updates throughout product lifecycle. 24/7 critical support includes guaranteed 8-hour response for safety system emergencies with active service contracts.