Description
Product Overview
TRICONEX 3723X is a Triple Modular Redundant (TMR) Analog Input Module with HART communication designed for the Tricon CX Safety Instrumented System (SIS) platform from Triconex (Schneider Electric). It provides high-integrity analog signal acquisition from field transmitters such as pressure, temperature, flow, and level instruments.
The 3723X converts industrial analog signals into digital values for processing by Tricon CX controllers while maintaining fault tolerance through TMR architecture. It supports 32 single-ended analog input channels, 0–5 VDC voltage inputs, and HART pass-through communication for intelligent field devices.
The module is intended for safety-critical applications requiring high availability, including Emergency Shutdown (ESD), Fire & Gas (F&G), process safety systems, and critical monitoring applications in oil & gas, chemical, and power industries.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | TRICONEX 3723X |
| Manufacturer | Triconex (Schneider Electric) |
| Product Type | TMR Analog Input Module with HART |
| System Platform | Tricon CX SIS |
| Input Channels | 32 single-ended analog inputs |
| Input Signal | 0–5 VDC |
| Current Input Range | 0–23 mA (with 250 Ω conversion resistor) |
| Resolution | 16-bit |
| Input Update Rate | Approx. 50 ms |
| Accuracy | <1% of Full Scale Range |
| HART Support | HART v7 pass-through |
| Input Isolation | Channel-to-channel and field-to-system isolation |
| Architecture | Triple Modular Redundant (TMR) |
| Diagnostics | Wire fault, over-range, under-range, module health monitoring |
| Field Power | 24 VDC loop power support |
| Installation | Tricon CX I/O expansion chassis |
| Compatible Terminations | 9760X / 9761X / 9765X / 9771X / 9789X / 9791X termination options |
| Application | Safety Instrumented Systems (SIS) |
Main Features and Advantages
Triple Modular Redundancy (TMR)
The TRICONEX 3723X uses TMR technology, where three independent measurement paths process incoming signals and provide fault-tolerant operation.
Benefits include:
- High system availability
- Fault tolerance
- Reduced nuisance trips
- Continuous operation during single-channel failures
- Improved SIL-rated safety performance
32-Channel Analog Signal Acquisition
The module provides 32 analog input points for monitoring process variables such as:
- Pressure transmitters
- Temperature transmitters
- Flow meters
- Level transmitters
- Process analyzers
This high-density design reduces cabinet space and simplifies SIS architecture.
3723X
HART Communication Pass-Through
The 3723X supports HART communication, allowing maintenance and engineering systems to access intelligent field device information without interrupting the safety signal path.
Supported functions include:
- Device diagnostics
- Instrument identification
- Calibration information
- Configuration data access
Advanced Diagnostics
Built-in diagnostics monitor:
- Input signal validity
- Module health
- Channel mismatch
- Field wiring problems
- Sensor faults
These diagnostics improve troubleshooting efficiency and reduce maintenance time.
Hot-Swap Capability
The Tricon CX platform supports online module replacement features, allowing maintenance activities with minimal process interruption when system procedures permit.
Applications
Oil & Gas
Used in:
- Offshore platforms
- Refineries
- Gas processing plants
- Compressor stations
- Pipeline safety systems
Typical measurements:
- Pressure
- Flow
- Temperature
- Valve position feedback
Chemical and Petrochemical
Applications include:
- Reactor monitoring
- Process interlocks
- Critical alarm systems
- Safety shutdown systems
Power Generation
Used for:
- Turbine monitoring
- Boiler protection
- Generator auxiliary systems
- Balance-of-plant safety functions
Industrial Safety Systems
Typical uses:
- Emergency Shutdown Systems (ESD)
- Fire & Gas systems
- Burner Management Systems (BMS)
- SIL-rated process protection
Related Products
- TRICONEX 3722X — TMR analog input module variant for Tricon CX systems.
- TRICONEX 3700A — Legacy Tricon analog input module.
- TRICONEX 3805E — Tricon CX analog output module.
- TRICONEX 3503E / 3503EN — Digital input modules.
- TRICONEX 3625C1 — Digital output module.
- TRICONEX 3008 — Tricon main processor module.
