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Triconex 3700/3700A | Reliable TMR Analog Input Module
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Discover the Triconex 3700/3700A Analog Input Module for high-integrity safety systems. Accurate, fault-tolerant, and 100% original with fast global shipping.
Product Overview
The Triconex 3700 and 3700A Analog Input Modules form a key part of the Tricon safety system. Built on Triple Modular Redundant (TMR) architecture, they deliver precise and validated data from critical field sensors.
Each signal passes through three independent input channels, ensuring reliability and continuous operation even if one channel fails.
Thanks to mid-value selection logic, the controller automatically filters out noise and abnormal readings. As a result, you always receive stable, trustworthy data, even in demanding process environments. This makes the 3700 and 3700A ideal for safety, shutdown, and control applications in industries where uptime is vital.
Key Functional Highlights
Triple-Channel Accuracy
Every one of the 32 input points is handled by three separate circuits. This design allows the system to continue running even when a channel encounters a fault.
Continuous Fault Diagnostics
The module constantly checks its own health. When an error appears, the FAULT indicator activates so technicians can replace the affected part quickly.
Mid-Value Signal Logic
The Tricon controller uses the median input value, which eliminates spikes from noise or sensor drift. Therefore, the process stays accurate and stable.
Hot-Swap Replacement
You can replace faulty modules without shutting down the process. This feature reduces maintenance time and boosts system availability.
Flexible Input Options
The 3700A supports both voltage (0–5 VDC) and current (0–20 mA) inputs through a built-in 250 Ω shunt. Configuration is handled easily via TriStation software.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | 3700 / 3700A |
| Architecture | Triple Modular Redundant (TMR) |
| Channels | 32 differential, DC coupled |
| Voltage Range | 0–5 V DC ±6% (3700A) |
| Current Range | 0–20 mA with 250 Ω shunt |
| Resolution | 12 bits |
| Accuracy | <0.15% of Full Scale (0–60°C) |
| Input Update Rate | 55 ms |
| Input Resistance | 30 MΩ (min) |
| Common Mode Rejection | -80 dB (DC–100 Hz) |
| Overrange Protection | 150 VDC / 115 VAC continuous |
| Indicators | PASS, FAULT, ACTIVE LEDs |
| Configuration | TriStation software |
| Operating Temperature | 0°C to +60°C |
The module’s robust design ensures excellent noise immunity and electrical protection, making it ideal for high-interference areas or vibration-prone environments.
Application Areas
The Triconex 3700 and 3700A integrate seamlessly with other Triconex safety controllers. They support a range of mission-critical applications, including:
- Emergency Shutdown (ESD) Systems
- Fire and Gas Protection
- Turbine and Compressor Control
- Power Generation and Distribution
- Refining, Petrochemical, and Chemical Process Control
Their redundant architecture helps operators maintain maximum uptime while simplifying maintenance and diagnostics.
FAQ
Q1: Are Triconex 3700 and 3700A interchangeable?
Yes. Both share the same TMR architecture and core functionality. However, the 3700A includes voltage input support (0–5 VDC), giving users more flexibility in analog signal handling.
Q2: How should the module be installed?
Use an External Termination Panel (ETP) connected via the Tricon backplane cable. Always ensure proper grounding and shielding for accurate, noise-free performance.
Q3: What about delivery and warranty?
All Triconex 3700/3700A modules are brand-new and original. We ship globally via DHL, FedEx, or UPS with lead times from 3 days to 2 weeks. Every product comes with a 30-day return policy covering verified quality issues.
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Details
| Weight | 2.85 kg |
|---|
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