3700/3700A Triconex Analog Input Module | TMR High-Reliability IO

Product Overview

Triconex 3700/3700A is a high-performance Triple Modular Redundant (TMR) analog input module. It ensures critical process safety through advanced fault-tolerant architecture. Each module monitors 32 differential input channels with extreme precision. The system automatically selects the mid-value signal to guarantee data integrity. You can replace modules online without stopping your process via Hot-Spare support. It is the ideal choice for demanding industrial automation environments.

Technical Specifications

• Brand: Triconex
• Model: 3700 / 3700A
• Module Type: Analog Input (AI), TMR
• Input Points: 32 differential, DC coupled
• Voltage Range: 0-5V (+6% for 3700A)
• Current Range: 0-20 mA (via 250 Ω shunt)
• Resolution: 12 bits
• Accuracy: <0.15% of FSR (0°C to 60°C)
• Update Rate: 55ms
• Input Resistance: 30 MΩ DC (min)
• Common Mode Rejection: -80 dB typical
• Operating Temperature: 0°C to 60°C
• Diagnostic Capability: Continuous per-channel monitoring
• Fault Indicators: PASS, FAULT, ACTIVE (Yellow)

Installation and Maintenance

• Modules are mechanically keyed for error-proof installation.
• The module requires a separate External Termination Panel (ETP).
• Connect the ETP to the Tricon backplane using the dedicated cable.
• Hot-spare capability enables replacement during active operation.
• The system operates correctly even with two faulty channels.
• Built-in diagnostics activate chassis alarms for channel failures.

Compatibility and Standards

• Compatible with standard Tricon chassis architectures.
• Supports standard industrial signal ranges for sensors and transmitters.
• Includes a standard 12-month quality warranty.
• Global shipping available via FedEx, UPS, and DHL.

Typical Applications

• Emergency Shutdown Systems (ESD).
• Turbine Control and Monitoring.
• Critical Process Control Loops.
• Oil and Gas Pipeline Management.
• High-Availability Power Generation Plants.

Documentation and Support

Download the full technical manual here to explore advanced configuration steps and wiring diagrams. Our team provides dedicated technical support for all installations.

• For inquiries, email us at: info@oiltechcontrols.com
• Contact us via WhatsApp: +86 158 8020 0923

Frequently Asked Questions (FAQ)

• Can I replace the module while the system is running? Yes, the 3700/3700A supports hot-swapping.
• What happens if one channel fails? The module continues to operate normally using remaining channels.
• Does the module provide isolation? It features leg-to-leg isolation of 200 KΩ.
• How do I identify a module fault? The front panel displays a FAULT indicator and triggers a chassis alarm.

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