Triconex 3721 TMR Analog Input Module in stock

Triconex 3721 is a 32-channel triple modular redundant (TMR) analog input module for Tricon safety instrumented systems. It collects analog signals from field transmitters and converts analog values to digital data for the safety controller processing.

This DC-coupled differential input module supports hot swap replacement, and it is certified for SIL3 safety applications. It is widely used as spare parts for petrochemical, oil & gas and power plant SIS system maintenance and retrofit projects.

Data Parameters

• 1. Brand: Triconex.

• 2. Model: 3721.

• 3. Product Type: TMR Analog Input Module.

• 4. Input Channels: 32 differential DC-coupled channels.

• 5. Signal Range: 0~5VDC or -5~+5VDC programmable.

• 6. Resolution: 12-bit /14-bit user configurable.

• 7. Power Supply: 24VDC, 18~30VDC operating range.

• 8. Operating Temperature: -40℃ ~ +70℃.

• 9. Safety Level: SIL3 certified.

• 10. Feature: Hot-swappable rack plug-in module.

Core Functions

• 1. Acquire analog signals of pressure, temperature and flow from field sensors.

• 2. Convert analog field signals into digital data for Tricon safety controller.

• 3. Adopt triple modular redundant design for high safety and fault tolerance.

• 4. Support online hot swap without shutting down the whole safety system.

• 5. Run continuous self-diagnosis and report module or channel faults.

Application Scenarios

• 1. Petrochemical plant SIS safety instrumented system signal acquisition cabinet.

• 2. Oil & gas pipeline and refinery emergency shutdown control system.

• 3. Power plant boiler and turbine safety interlock protection system.

• 4. Chemical plant BMS burner management system analog input spare replacement.

• 5. Tricon TMR safety control system spare parts inventory and cabinet renovation.

FAQ

• 1. Q: What is Triconex 3721?
      A: It is a 32-channel TMR analog input module for Tricon SIS safety system, used to collect field analog sensor signals.

• 2. Q: What safety integrity level does Triconex 3721 support?
      A: It has SIL3 certification, suitable for high-risk industrial safety instrumented systems.

• 3. Q: Can Triconex 3721 be hot swapped?
      A: Yes, it supports hot swap, technicians can replace the faulty module without stopping the whole safety system.