Description
Product Overview
The TRICONEX 3708EN is a hot‑swappable triple‑modular‑redundant analog input module built for Tricon safety‑instrumented systems. It accepts 16 channels of 4‑20 mA current signals from field transmitters, pressure sensors and temperature transmitters. With TMR fault‑tolerant hardware voting architecture, the module ensures valid process‑value acquisition even when partial hardware components fail. It supports HART signal pass‑through for smart field instruments, provides comprehensive channel‑level diagnostics including over‑range, under‑range and loop‑fault detection. Online hot‑swap allows replacement without shutting down the SIS platform. Widely applied in petrochemical, refinery and power‑plant sites for legacy safety‑system maintenance and spare‑part replacement.
Series
Tricon V9 series safety‑instrumented system hardware, triple‑modular‑redundant fault‑tolerant platform, including CPU, digital I/O, analog I/O and communication modules, deployed for SIL3‑grade ESD emergency shutdown, fire‑gas protection and safety interlock applications.
Product Features
- 16 independent 4‑20 mA analog input channels for process‑transmitter signal acquisition
- Triple Modular Redundancy (TMR) fault‑tolerant architecture, compliant with SIL3 safety integrity‑level requirements
- HART pass‑through capability for bi‑directional communication with HART‑smart field transmitters
- Hot‑swap support, module replacement available while SIS system keeps online operation
- Rich channel‑level diagnostics: loop open‑circuit, over‑range, under‑range and module hardware fault detection
- LED status indicators per channel and module overall health for fast on‑site troubleshooting
- High‑precision signal conversion for stable process‑variable measurement in heavy‑interference industrial environments
- Designed for long‑term continuous operation inside process‑control cabinets; compatible with Tricon main processor and dedicated chassis backplane
Product Parameters
| Item | Parameter |
|---|---|
| Model | 3708EN |
| Module Type | TMR Analog Input Safety Module |
| Number of Input Channels | 16 channels |
| Input Signal Type | 4‑20 mA analog current signal |
| HART Support | HART pass‑through compatible |
| Safety Architecture | Triple Modular Redundancy (TMR) |
| Safety Level | SIL 3 capable |
| Hot‑swap Function | Supported |
| Diagnostics | Loop open‑circuit, over‑range, under‑range, module hardware fault; LED status indication |
| Compatible System | Tricon V9 SIS chassis backplane |
| Operating Temperature | 0℃ ~ +60℃ |
Product Specifications
- Physical form: Plug‑in safety I/O module for Tricon chassis
- Condition: New surplus / Tested used (stock subject to real‑time confirmation)
- Warranty: 365‑day warranty for supplied units
- Shipment: In‑stock goods ship within 3 working days after payment
Function
Receives 4‑20 mA analog signals from field process transmitters; executes triple‑modular redundant signal voting and analog‑to‑digital conversion; supports HART transparent data interaction; transmits valid process‑variable data to Tricon main controller; detects field‑loop and module hardware faults and uploads alarm information to SIS operation station.
Purpose
Accurately collect analog process measurement values for Tricon safety‑instrumented systems; provide core process‑data source for safety interlock, ESD emergency‑shutdown and process‑over‑protection logic.
Application Fields
‑ Petrochemical plant ESD safety‑interlock systems‑ Oil & gas production‑site SIS safety‑control cabinets‑ Refinery safety‑instrumented system retrofits & spare‑part replacement‑ Thermal power‑plant boiler‑protection safety‑control projects‑ Chemical hazardous‑process safety‑control systems‑ Fire‑and‑gas (F&G) safety‑system analog‑signal acquisition
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TRICONEX 3708EN Tricon analog input module
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- Email: seren@ymgkplc.com
- Phone: +86 13313703791
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+86 13313703791
+86 13313703791
seren@ymgkplc.com



