TRICONEX 3481 32 Point Digital Output Module

TRICONEX 3481 is a 32-point digital output module for Tricon TMR safety instrumented system. It outputs 24VDC switching signals to drive field solenoids, valves and alarm devices, adopting triple modular redundant architecture for SIL3 safety applications in critical process plants.

This module is matched with termination panels such as 3664 and 3614E for field wiring. With two-stage voter design inside, it provides 1-of-3 voting output logic to ensure safety and availability. It is widely supplied as spare parts for ESD, fire & gas safety systems maintenance in oil, gas and chemical industries.

Main Specifications

1. Brand: TRICONEX (Invensys); Model:3481; Type: Digital Output Module
2. Channels:32 digital output channels; Output signal:24VDC switching output
3. Safety standard: IEC61508 SIL3; Architecture: TMR triple modular redundancy
4. Voting: Two-stage voter, 1-out-of-3 output logic; Channel output current: 300mA max
5. Compatible termination panels: 3664, 3614E; Mounting: Tricon chassis slot
6. Operating Temp: -20℃ ~ +60℃; Protection: IP20 cabinet installation
7. Supply Status: Industrial spare module for existing Tricon SIS system maintenance

Core Functions

1. Output 24VDC switching signals to drive field solenoids, valves and annunciator devices.
2. TMR voting architecture to achieve high safety availability for critical control loops.
3. Continuous channel self-diagnosis to detect field wiring faults and report to safety CPU.
4. Interface with matched termination panels for standardized field wiring distribution.
5. Support hot swap of module while maintaining safety system operating status.
6. Standard Tricon chassis installation for convenient replacement during SIS maintenance.

Application Scenarios

1. Safety instrumented system (SIS) output control for chemical and petrochemical plants.
2. Emergency shutdown system (ESD) solenoid valve and trip relay drive.
3. Fire & gas detection alarm and protection device output control.
4. Replacement of damaged DO modules for running Tricon safety platforms.
5. Spare parts inventory for factory safety automation maintenance teams.
6. Retrofit and upgrade of legacy Triconex SIL3 safety control cabinets.

FAQ

1. Q: What is TRICONEX 3481 used for?
   A: It is a 32-point digital output module for Tricon TMR safety system, outputting 24VDC signals to drive solenoid valves, trip relays and alarm devices for SIL3 safety control.
2. Q: Which termination panel matches 3481?
   A: It works with 3664 and 3614E termination panels for field wiring of the 32 output channels.
3. Q: What safety level can 3481 achieve?
   A: With TMR architecture and two-stage voting, it meets IEC61508 SIL3 safety integrity level.