The Triconex 3626X (Model 3626X / DO 3626X) is a high-density, 32-channel Digital Output Module manufactured by Schneider Electric (Triconex) specifically engineered for the Tricon CX Safety Instrumented System (SIS) platform.
Designed for critical safety applications up to SIL 3 (IEC 61508 / IEC 61511), the 3626X module provides triple-modular redundant (TMR) discrete output control for final elements such as emergency shutdown (ESD) solenoid valves, motor control relays, and visual/audible alarms in high-risk process industries.
Technical Specifications
| Parameter | Specification |
| Manufacturer | Schneider Electric / Triconex |
| System Platform | Tricon CX Safety Instrumented System (SIS) |
| Model / Part Number | 3626X (DO 3626X) |
| Module Type | 32-Channel Digital Output Module (Supervised / Non-Supervised) |
| Safety Integrity Level | Certified up to SIL 3 (IEC 61508 / IEC 61511 compliance) |
| Redundancy Architecture | Triple Modular Redundant (TMR) architecture |
| Nominal Output Voltage | 24 V DC (Operating range: 20.4–28.8 V DC) |
| Current Ratings | 1.70 A max per point; 5 A surge (7 ms); 20 A max per module |
| Field Power Configuration | Commoned field power across output channels |
| Line Fault Detection (LFD) | Programmable per point for open-circuit and short-circuit monitoring |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Chassis Compatibility | Designed exclusively for Tricon CX I/O expansion chassis racks |
Core Features & Operating Capabilities
- Triplicated TMR Performance: Executes parallel output control across independent legs, using internal voting to ensure seamless fault tolerance and zero single-point-of-failure vulnerability.
- Supervised & Unsupervised Modes: Fully programmable via TriStation software to operate in standard switching or fully supervised line fault detection (LFD) mode, tracking open-circuit and short-circuit faults.
- Hot-Swappable Design: Supports online insertion and removal in powered Tricon CX chassis racks, allowing smooth maintenance turnarounds without shutting down active safety loops.
- Comprehensive Self-Protection: Integrated output switches are self-protected against over-voltage, thermal overload, and over-current conditions without requiring external field fuses.
- Onboard Diagnostic Feedback: Dedicated front-panel status LEDs (Module Pass, Fault, Active, Load status, and per-point green/yellow indicators) provide instant visual tracking of loop health.
Related Tricon CX Hardware Components
- Tricon CX Controller Modules — Central processing units running TMR safety logic.
- Tricon CX I/O Expansion Chassis (Model 8131X) — Dedicated backplane enclosures housing CX I/O cards.
- External Termination Panels (ETP) / FET Kits — Compatible termination options such as the 9662X-610RF or 9671X-610RF kits.
- TriStation Software Suite — Engineering and configuration platform for parameterizing safety interlocks and line fault detection thresholds.
