Description

TRICONEX DI3301 Digital input modules

This is a high-density, 32-point digital input module that is part of the Triconex Tricon control system. The Tricon system is an industry-leading triple redundant fault-tolerant safety system that is widely used in industries with extremely high safety and availability requirements.

 

Core Product Description

1. Product Name and Basic Function

• Name: Triconex 32-point Digital Input Module

• Model: DI3301

• Function: The primary function of this module is to receive DC switch signals from field devices (e.g., pushbuttons, switches, relay contacts, proximity switches) and convert them into internal logic signals that the Tricon controller can process.

2. Key Features

• High Density: Provides 32 input points in a single module, helping to save chassis space and reduce cost per point.

• Triple Modular Redundant Architecture: This is the core of the Tricon system. Each DI3301 module internally contains three independent input circuits. Three independent processors read these three signal paths and perform a “two-out-of-three” voting to detect and mask a single channel failure.

• High Reliability/Availability: Thanks to the redundant design, a failure of a single component (e.g., one opto-isolator, one circuit) will not cause the entire module or system to shut down; the system can continue to operate safely. This meets the stringent requirements of Safety Instrumented Systems.

• Diagnostic Capabilities: The module features robust internal diagnostics, capable of detecting internal circuit faults, power supply faults, vote mismatches, and other issues, reporting them promptly to the main controller.

• Field Wiring Monitoring: Capable of detecting open-circuit faults in the field loop.

• Electrical Isolation: Each input point is electrically isolated from others and from the logic circuitry, suppressing field noise and preventing damage from high voltage transients.

3. Technical Specifications

• Number of Inputs: 32

• Input Type: Dry contact (passive contact) or NAMUR-type proximity switches (requires configuration).

• Rated Voltage: Typically 24V DC (please refer to the latest manual for specifics).

• Logic “1” / “ON” State: Input signal closed (contact made).

• Logic “0” / “OFF” State: Input signal open (contact broken).

• Backplane Communication: Communicates with the main processor module via the Tricon backplane.

• Hot Swappable: Supported. Allows for module installation or removal without powering down the system, facilitating maintenance.

4. Application Scenarios
The TRICONEX DI3301 module is primarily used in industrial processes requiring high reliability and safety interlocks, such as:

• Oil & Gas: Offshore platforms, refineries, pipeline compressor stations.

• Chemical & Petrochemical: Safety interlocks for reactors, boilers, and burners.

• Power Generation: Turbine control systems.

• Others: Any Emergency Shutdown System or critical process control system requiring SIL 3 (Safety Integrity Level 3) certification.

5. Role in the Tricon System
The DI3301 acts as the “eyes” of the Tricon system, responsible for monitoring the status of critical equipment (e.g., whether a pump is running, a valve is in position, a level is too high, or an emergency stop button is pressed). These status signals are transmitted securely and reliably to the main processor, serving as the basis for executing safety logic (e.g., triggering an emergency shutdown).

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Summary of Key Points

ales of the brand:

ABB、EPRO、GE、FOXBORO、Schneider、Rexroth、Honeywell、Bently、YASKAWA other global DCS system and PLC system, servo system of famous industrial brand.

 

☀️Tara(Sales Director)

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🥇Product Condition: One-year warranty

 

Company Overview

Main Products

We specialize in supplying original imported spare parts for DCS, PLC, robotics, and large servo systems from leading global brands, including:

• FOXBORO | EMERSON | TRICONEX | XYCOM | BENTLY
• ROCKWELL | ABB | GE | Aen-Brady | YOKOGAWA
• HONEYWELL | RELIANCE | SCHNEIDER | MODICON
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