TRICONEX DO3625 Digital Output Module

Product Description

TRICONEX DO3625 (also named 3625) is a TMR triple modular redundant supervised digital output module (SDO) of Tricon 3000 series, core I/O card for Safety Instrumented System (SIS). It adopts triple modular redundant architecture with three independent voting channels, single-point fault will not interrupt output, compliant with SIL3 safety level. It provides 32 channels of 24VDC digital outputs with load circuit supervision for open/short circuit detection. It communicates with main controller via TriBus backplane bus, with built-in self-test and online diagnostics. Hot-swap is supported. It drives solenoid valves, ESD trip relays and field alarm circuits, widely used for spare replacement in petrochemical, oil & gas and power safety interlock systems.

Product Parameters

• Series: Tricon 3000 SIS System
• Model: DO3625 (3625)
• Device Type: TMR Supervised Digital Output Module (SDO)
• Channel Count: 32 channels, 24VDC digital output
• Operating Voltage: 16~32VDC, nominal 24VDC
• Continuous Current per Channel: Max 1.7A; surge current 7A for 10ms
• Minimum Load Current:10mA
• Bus: TriBus (Tricon proprietary backplane bus)
• Safety Integrity Level: SIL3
• Diagnostics: Open/short circuit supervision, board self-diagnosis
• Isolation: Channel-to-channel isolation, 1500VDC isolation voltage
• Mounting: Slot installation in Tricon mainframe rack, hot swappable
• Operating Temperature: -20℃ ~ +70℃
• Protection Class: IP20 (inside rack)
• Certifications: SIL3, IEC61508, UL, CE
• Lifecycle: Discontinued, new surplus and refurbished spare parts available

Product Application

It is deployed in SIS / ESD emergency shutdown systems for oil, gas, chemical and power plants. It receives interlock commands from Tricon main controller and sends discrete signals to drive emergency shutdown valves, solenoids, trip relays and audible/visual alarms. It continuously monitors output wiring faults and sends alarms once open/short circuit is detected. When hazardous process conditions occur, it executes emergency shutdown and feed cut-off actions. Commonly used for legacy Tricon3000 safety system retrofit and failed I/O card replacement.

Same Series Models (Tricon3000 I/O Modules)

AI3721, AO3481, DI3501, DO3625, DI3503, DO3626