Triconex 3704E TMR Analog Input Module for SIS
Manufacturer: Triconex
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Part Number: 3704E
Condition：New with Original Package
Product Type: TMR Analog Input Module for SIS
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
Overview of the Triconex 3704E Analog Input Module
The Triconex 3704E is a safety-grade analog input module designed for Triconex Triple Modular Redundancy (TMR) safety systems. It provides reliable acquisition of analog signals from field transmitters and sensors, delivering validated data to safety controllers used in critical process environments.
Although discontinued by the original manufacturer, the 3704E remains widely installed in legacy Safety Instrumented Systems, where long-term stability and deterministic behavior are required.
Triple Modular Redundancy and Fault Tolerance
The 3704E uses Triconex’s proven TMR architecture, where three independent input circuits process each signal in parallel. Internal voting logic validates measurements before transmission to the controller.
From field experience, this approach significantly reduces false trips caused by noise, wiring degradation, or component failure, making it suitable for high-risk industrial processes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 3704E |
| Manufacturer | Triconex (Schneider Electric) |
| Product Type | Analog Input Module |
| System Compatibility | Triconex TMR Safety & Control System |
| Input Channels | 32 analog input channels |
| Supported Signals | 4–20 mA, 0–20 mA, 0–5 V, 0–10 V |
| Resolution | 16-bit A/D conversion |
| Accuracy | ±0.1% of full scale (typical) |
| Input Impedance | ≥250 Ω (current), high impedance (voltage) |
| Isolation | Channel-to-channel and channel-to-system |
| Diagnostics | Open/short detection, signal validation |
| Redundancy | Triple Modular Redundancy with fault masking |
| Power Supply | 24 V DC |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | –40 °C to +85 °C |
| Humidity | 5–95% non-condensing |
| Mounting | Triconex chassis, rack-mounted |
| Weight | 1.3 kg (2.84 lbs) |
| Certifications | IEC 61508 SIL3, CE, UL, CSA |
| Lifecycle Status | Discontinued by manufacturer |