TRICONEX 2402

1. Product Description

2. Product Parameters

Parameter	Details
Signal Types	24 VDC digital input (sink/source compatible)
Channels	16 isolated channels (non-isolated between channels)
Input Voltage Range	16–30 VDC (with overload protection)
Noise Immunity	>2000 V/m electromagnetic compatibility (EMC)
Compatibility	Tricon V9000, V8000, and Legacy series controllers
Power Supply	24 VDC (via backplane, redundant power supported)
Operating Temperature	-40°C to +70°C
Safety Integrity Level	SIL 3 (certified for use in Safety Instrumented Systems)
Fault Detection	Open circuit, short circuit, and voltage anomaly detection

TRICONEX 2402

3. Advantages and Characteristics

• TMR Architecture: The TRICONEX 2402’s triple redundancy ensures fault tolerance by voting on signals from three independent channels, reducing single-point failures by over 99%. This design is critical for applications requiring high availability, such as emergency shutdown systems.
• High-Speed Acquisition: With a signal update rate of <10 ms, the module captures transient events accurately, making it suitable for fast-responding control loops. For example, it can detect a safety switch activation in milliseconds, triggering immediate system responses.
• Integrated Diagnostics: Built-in self-test (BIST) functionality continuously monitors channel health, with diagnostic coverage exceeding 95%. Faults are reported to the controller in real time, enabling proactive maintenance and minimizing downtime.

4. Application Fields and Application Cases

• Applicable Industries: Widely used in industrial automation, safety instrumented systems (SIS), and machine control across sectors like manufacturing, water treatment, and aerospace.
• Application Case: A chemical plant deployed the TRICONEX 2402 to monitor emergency stop buttons and valve position switches in its reactor units. During a routine maintenance test, the module detected a faulty input channel due to a loose connection. The TMR architecture automatically ignored the faulty channel, allowing the system to continue operating without interruption. This prevented a potential shutdown and saved over $100,000 in production losses while ensuring compliance with safety regulations.

5. Competitor Comparison

Compared to standard digital input modules, the 2402 offers superior safety certification (SIL 3) and a broader operating temperature range, making it suitable for extreme environments without auxiliary cooling. Its TMR design eliminates the need for external redundancy modules, reducing hardware costs by up to 25% and simplifying system architecture. Unlike some alternatives, the 2402 provides deterministic signal processing, ensuring synchronized data acquisition across all channels in high-speed control systems.

TRICONEX 2402

6. Selection Suggestions

• Signal Requirements: Confirm the input voltage range and signal type (sink/source) of your field devices to ensure compatibility with the 2402’s specifications.
• Redundancy Needs: For SIL 3 systems, pair the module with a redundant Tricon controller and backplane to achieve full system redundancy.
• Environmental Factors: In high-EMI or corrosive environments, use shielded cables and proper grounding to maintain signal integrity and module longevity.

7. Precautions

• Installation: Handle the module with anti-ESD equipment and follow the Tricon hardware manual for correct insertion into the backplane.
• Wiring: Ensure proper polarization of DC inputs to avoid damage. Use twisted-pair cables for long runs to minimize noise interference.
• Maintenance: Regularly inspect connections for wear and tear, and perform functional tests (recommended quarterly) to verify diagnostic accuracy. Avoid hot-swapping the module unless the system is in a safe state.