The TRICONEX 2401 is a high-reliability digital output module from Triconex (a Schneider Electric brand), specifically designed for Tricon Triple Modular Redundancy (TMR) control systems. This module converts controller logic commands into action signals for field actuators (such as relay activation and valve switching). It plays a critical role in final control output within industrial Safety Instrumented Systems (SIS) and critical process control, making it widely used in industries with stringent safety and reliability requirements, including oil & gas, chemicals, and power generation.
- Output Type: Discrete digital output (relay output)
- Number of Output Channels: 8 independent channels with mutual isolation
- Relay Type: Double Pole Double Throw (DPDT) dry contacts
- Rated Load Capacity:
- Resistive load: 250V AC/5A, 30V DC/5A
- Inductive load: 250V AC/2A, 30V DC/2A
- Response Time: ≤10ms (from command output to contact operation)
- Isolation Performance: Isolation voltage ≥250V AC between channels and between channels and backplane
- Operating Temperature: -40°C to +70°C (wide-temperature design for extreme industrial environments)
- Storage Temperature: -50°C to +85°C
- Relative Humidity: 5% to 95% (non-condensing)
- Vibration Resistance: 10–500Hz, 1g acceleration (operating condition)
- Shock Resistance: 30g peak acceleration (11ms duration)
- Safety Integrity Level: Complies with IEC 61508 SIL 3 requirements
- Certifications: ATEX explosion-proof certification, IECEx certification, CE marking
- Electromagnetic Compatibility (EMC): Conforms to EN 61000 series standards with strong anti-interference capability
TMR Architecture Compatibility: Fully integrated with Triconex TMR systems, utilizing triple modular signal output and voting mechanisms to ensure accurate execution of control commands. Single-channel faults do not affect overall system output, meeting high safety-level control requirements.
High-Reliability Design: Incorporates industrial-grade relays and redundant circuit design. Relays offer a mechanical lifespan of ≥1,000,000 operations and electrical lifespan of ≥100,000 operations, with a Mean Time Between Failures (MTBF) exceeding 100,000 hours.
Fail-Safe Design: Supports fail-safe mode configuration. When the module loses power or malfunctions, output contacts can be preset to a safe state (open or closed) to prevent hazardous conditions.
Online Diagnostic Function: Built-in real-time self-diagnostic circuits monitor relay contact status, coil faults, and power anomalies. Diagnostic information is transmitted to the controller via the system bus for rapid fault localization.
Hot-Swappable Support: The module supports online hot swapping, allowing replacement without system shutdown, minimizing maintenance-related production disruptions and improving system availability.
Overcurrent Protection: Each channel features built-in overcurrent protection circuits to prevent module damage from load short circuits, enhancing system fault resistance.
- Oil and Gas Industry: Controls critical equipment such as emergency shutdown valves, pump start/stop mechanisms, and flare ignition systems
- Chemical Industry: Drives reactor safety interlock valves, agitator start/stop functions, and emergency pressure relief devices
- Power Industry: Controls generator set protection switches, boiler fuel shutoff valves, and cooling system valves
- Other Critical Industrial Fields: Controls actuators in nuclear power plant auxiliary systems, rail transit signal actuators, and compliance control valves in pharmaceutical production lines
- Designed for use with Triconex Tricon controllers (e.g., 3700 series, 8000 series)
- Configurable via TriStation 1131 software, with customizable parameters such as output signal hold time and fail-safe status
- Works in conjunction with other system modules (e.g., digital input modules, analog modules) to form complete closed-loop control loops
- During selection, confirm the voltage level, load type, and capacity of on-site actuators to ensure compatibility with module parameters
- Installation must be performed by professional technicians, strictly following explosion-proof specifications for hazardous area deployments
- When wiring, pay attention to relay contact capacity limits to avoid contact damage from overloading
- Regularly check module operation status and relay lifespan via system diagnostic tools, replacing modules approaching end-of-life promptly
With its high safety, reliability, and stable output performance, the TRICONEX 2401 serves as a core component for digital control output in critical industrial processes, providing reliable execution support for production safety and process control.
