TRICONEX 3501E Digital Input Module

Based on Triconex's Triple Modular Redundancy (TMR) architecture, each channel processes input signals independently, ensuring data reliability through a 2oo3 (two-out-of-three) voting mechanism.

A single module failure does not affect system operation, and hot-swap replacement is supported, achieving true fault tolerance.

Number of Channels: Typically provides 32 digital input channels, supporting high-density configuration.

Input Signal Types:

Voltage Range:

SIL3 Certification: Complies with IEC 61508 and ISA S84.01 standards, suitable for applications with the highest safety integrity level.

Explosion-Proof Certification: Optional versions with ATEX, IECEx, etc., certifications, suitable for hazardous areas.

Online Self-Diagnosis: Real-time monitoring of the module's internal circuits, power supply, and communication status, triggering an alarm in case of faults.

Input Signal Monitoring: Detects abnormal conditions such as contact jitter, disconnection, and short circuits, and provides fault location information.

LED Indicators: Intuitively display the input status of each channel and the health status of the module.

High-Speed Synchronization Bus: Real-time data exchange with the Triconex controller to ensure fast response of input signals.

Redundant Communication: Supports dual redundant communication paths to improve data transmission reliability.

Receives digital signals from field devices (such as limit switches, pressure switches, solenoid valve feedback, etc.).

Achieves electrical isolation between the field and the system through optical isolation or relay isolation technology, enhancing anti-interference capability.

Each channel processes input signals independently, converting physical signals into digital logic (0/1).

The processing results of the three channels are compared through a hardware voting circuit to ensure consistency. In case of discrepancies, the system automatically triggers a fault handling process.

The processed digital signals are transmitted to the Triconex controller through an internal bus for logical operations and safety decision-making.

Supports mechanisms such as Cyclic Redundancy Check (CRC) to ensure the accuracy of data transmission.

Monitors the operating status of key equipment (such as compressors, pumps) and triggers an emergency shutdown when abnormalities are detected.

Connects to smoke detectors, combustible gas sensors, etc., to achieve rapid response to fires or leaks.

In industries such as chemical engineering and oil refining, monitors valve positions, level switches, etc., to ensure process parameters are within a safe range.

Used for status monitoring of non-nuclear safety-level systems, such as switch  monitoring of cooling water systems and ventilation systems.

Monitors the status of safety valves and shut-off valves in wellhead platforms and pipeline pump stations to ensure production safety.

High Availability: Triple redundancy design and hot-swap features ensure no single point of failure in the system, reducing downtime.

Safety and Reliability: Passes SIL3 certification, meets the most stringent safety requirements, and reduces accident risks.

Simplified Maintenance: Modular design and intuitive diagnostic functions reduce maintenance complexity and costs.

Flexible Adaptation: Supports multiple input types and voltage ranges, adapting to different industrial environments.