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Product Overview
The TRICONEX 3625 is a high-reliability digital output module designed for safety-critical industrial automation systems, manufactured by Honeywell Triconex (formerly Invensys/Schneider Electric). As part of the Tricon safety instrumented system (SIS) platform, it employs Triple Modular Redundancy (TMR) architecture, where three independent channels process outputs in parallel to ensure fault tolerance and continuous operation even if one channel fails. This module supports 32 digital output channels at 24 VDC, with optical isolation (1,500 VDC) to eliminate ground loops and suppress electromagnetic interference in harsh environments. Certified to IEC 61508 SIL 3—the highest safety integrity level—the TRICONEX 3625 integrates seamlessly with Tricon controllers (e.g., CX series) for applications like emergency shutdown (ESD), fire and gas (F&G) systems, and process safety interlocks. Its hot-swappable design minimizes downtime during maintenance, while per-channel diagnostics enable real-time fault monitoring. The robust IP67-rated enclosure ensures reliability in extreme conditions such as offshore platforms or chemical plants .
Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | TRICONEX 3625 |
| Manufacturer | Honeywell Triconex |
| Product Type | Digital Output Module |
| Output Voltage | 24 VDC |
| Output Channels | 32 |
| Current Capacity | 1.7 A per channel (resistive) |
| Isolation Voltage | 1,500 VDC |
| Architecture | Triple Modular Redundancy (TMR) |
| Safety Certification | IEC 61508 SIL 3 |
| Operating Temperature | -40°C to +70°C |
| Dimensions | 222 × 178 × 76 mm |
| Weight | 2.2 kg |
| Communication Protocols | Modbus TCP/IP, Ethernet |
| Protection Rating | IP67 |
TRICONEX
Main Features and Advantages
Triple Redundancy for Fault Tolerance:
The TRICONEX 3625 leverages TMR technology, where three independent processors execute identical logic. Outputs undergo hardware voting, ensuring system continuity even if one processor fails. This design achieves >99.999% availability and 99% diagnostic coverage, critical for SIL 3 applications .
Enhanced Diagnostics and Safety:
Each channel includes real-time monitoring for faults (e.g., short circuits or open loads), triggering alarms without disrupting operations. Status LEDs per channel simplify troubleshooting, while optical isolation eliminates ground loops and EMI interference. The module’s GuardLink 2.0 protocol enables secure communication with HMIs and automated diagnostic reporting .
High-Current Drive and Flexibility:
With a 1.7 A per-channel capacity, the module drives demanding actuators like solenoid valves and motor contactors directly. Hot-swappability allows replacements during runtime, reducing maintenance downtime. Universal 24 VDC compatibility suits diverse industrial loads .
Robust Industrial Design:
Encased in an IP67-rated enclosure, the TRICONEX 3625 resists dust, moisture, and corrosive agents. Compliance with IEC shock/vibration standards ensures reliability in extreme environments such as offshore rigs or power plants .
Application Areas
The TRICONEX 3625 is pivotal in industries where safety and uptime are non-negotiable:
Oil & Gas: Controls ESD valves, pipeline safety interlocks, and compressor anti-surge systems to prevent catastrophic failures during pressure anomalies .
Chemical/Pharmaceutical: Manages reactor safety shutdowns and toxic gas ventilation, leveraging SIL 3 compliance for hazardous material handling .
Power Generation: Activates turbine protection and grid synchronization in nuclear or thermal plants, ensuring rapid response to grid instability .
Fire & Gas (F&G): Triggers fire suppression systems and alarm relays in refineries, with diagnostics ensuring readiness during emergencies .
Manufacturing: Halts high-speed production lines (e.g., robotic cells) via safety sensor inputs, minimizing equipment damage .
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