TRICON DO3626X Triple-Modular Redundant Digital Output Module

High-Integrity Digital Output Module for Safety Systems

Technical Specifications

Main Features and Advantages

Triple-Modular Redundancy: The TRICON DO3626X implements three independent output circuits per channel, providing fault-tolerant operation critical for safety systems. Voting logic ensures correct output even if one circuit fails, achieving >99.999% reliability. This architecture meets SIL 3 requirements for high-risk applications including emergency shutdown systems.

Intelligent Diagnostics: Continuous monitoring detects open circuits, short circuits, and over-temperature conditions at the channel level. The TRICON DO3626X provides detailed diagnostic information to the controller, enabling predictive maintenance and reducing mean-time-to-repair by up to 60%. Automatic de-energization on fault detection ensures failsafe operation.

3626X

High-Density Power Switching: With 16 isolated channels capable of 2A continuous current each, this module controls critical actuators without additional relays. The high-side switching design simplifies wiring and provides compatibility with diverse field devices including solenoid valves, motor starters, and alarm horns.

Robust Industrial Design: Engineered for harsh environments, the TRICON DO3626X operates reliably across extreme temperatures (-40°C to +70°C). Conformal-coated circuitry protects against humidity and contaminants, while ATEX certification ensures safe operation in hazardous locations. The module’s hot-swappable design allows replacement without system shutdown.

Safety-Certified Architecture: Certified by TÜV to IEC 61508 SIL 3 standards, this module incorporates diverse redundancy and comprehensive self-testing. The watchdog timer and memory protection features prevent unsafe states, while the secure firmware update process maintains system integrity during maintenance.

Application Areas

• Emergency shutdown systems (ESD)
• Fire and gas detection systems
• Turbine overspeed protection
• Process safety interlocks
• Critical machinery protection

Related Products

• TRICON DI3626X: Triple-redundant digital input module
• TRICON AI3626X: Analog input module for safety systems
• TRICON 3008: Main processor module