Description
The Triconex 3626X (often designated as DO 3626X) is a safety-critical hardware component manufactured by Schneider Electric (Triconex).
Key Overview & Specifications
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Product Type: 32-Channel Digital Output (DO) Module
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Series: Tricon CX Safety Control System
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Safety Rating: TÜV-certified for SIL 3 applications in compliance with IEC 61508 / IEC 61511.
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Architecture: Triple Modular Redundancy (TMR) technology, ensuring fault tolerance and high availability with no single point of failure.
Core Features
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Function: Designed to reliably drive critical field loads (such as solenoid valves, indicator alarms, and relays) for 24 VDC systems.
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Line Fault Detection (LFD): Features per-channel configurable supervision for open-circuit and short-circuit fault detection.
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Hot-Swappable: Supports online module replacement in powered chassis configurations without process interruption.
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Common Applications: Emergency Shutdown Systems (ESD), Fire and Gas Protection (F&G), and Burner Management Systems (BMS) within high-risk sectors like petrochemical, oil & gas, and power generation.
3626X
Product Overview
3626X is a Supervised Digital Output Module designed for the Tricon CX Fault-Tolerant Safety Instrumented System, manufactured by Triconex (Schneider Electric).
It adopts Triple Modular Redundant (TMR) 2oo3 voting architecture, receiving safety logic commands from the main processor and driving field actuators, solenoid valves, trip relays and indicator lights. It is installed in the 8120X main chassis and works with matched terminal units.
This module supports continuous circuit monitoring for each output channel, can detect load open-circuit and short-circuit faults, and is widely deployed in ESD emergency shutdown, turbine protection and burner management safety loops that meet IEC 61508 SIL3.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 3626X |
| Module Type | Tricon CX Supervised Digital Output Module |
| Manufacturer | Triconex / Schneider Electric |
| Applicable Platform | Tricon CX Safety System (8120X Main Chassis) |
| Channel Count | 16 supervised digital output channels |
| Output Type | 24 VDC sourcing/sinking output |
| Rated Channel Current | 0.5 A per channel |
| Architecture | Triple Modular Redundancy (TMR), independent A/B/C channel voting |
| Safety Level | IEC 61508 SIL 3, FM, CE certified |
| Built-in Function | Channel load monitoring, open/short circuit diagnostics |
| Hot Swap | Supported within Tricon CX rack |
| Backplane Bus | TriBus triple redundant internal bus |
| Operating Temperature | -40 ℃ ~ +70 ℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Protection Class | IP20 (must be installed inside control cabinet) |
| Front Panel LEDs | OK, Fault, Channel status indicators |
| Supporting Terminal Unit | Matched external field termination board |
| Engineering Software | Triconex Workbench |
| Spare Part Status | OEM production discontinued; surplus new and refurbished spare modules available |
Key Features
- Triple redundant independent signal paths; single channel failure will not trigger spurious trip or loss of safety output
- Each channel with supervised load detection, can report wire breakage and coil failure to the safety controller
- Fast output response, meets millisecond-level action requirements for safety interlock systems
- Hot-swap design, allows module replacement without shutting down the whole safety rack
- Strict mechanical keying prevents misplugging incompatible modules into slots
- Optimized anti-surge PCB design, stable operation under strong electromagnetic interference in power and petrochemical plants
- Dedicated hardware exclusive to Tricon CX platform; cannot be interchanged with older Tricon 3626 non-X versions
- Perfectly matched with 8120X main chassis and 3009X main processor modules
