• Triconex 3351S2
  • Triconex 3351S2
  • Triconex 3351S2
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Triconex 3351S2 Analog Input Module

Triconex 3351S2 Analog Input Module

Description

The Triconex 3351S2 is a high-reliability Analog Input Module designed for integration within the Tricon Triple Modular Redundancy (TMR) architecture. Engineered for safety-critical applications in oil and gas, petrochemical, and...

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SKU: 3351S2
Proveedora: Triconex
tipo: Analog Input Module
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Description

The Triconex 3351S2 is a high-reliability Analog Input Module designed for integration within the Tricon Triple Modular Redundancy (TMR) architecture. Engineered for safety-critical applications in oil and gas, petrochemical, and power generation sectors, this module provides continuous, high-precision monitoring of field sensors. It converts analog signals into digital data while performing comprehensive self-diagnostics to ensure system integrity. By employing a three-channel voting mechanism, the 3351S2 eliminates single points of failure, maintaining maximum system availability in demanding industrial environments.

Features

  • TMR Architecture: Utilizes three isolated input paths to process field data independently, providing hardware-based fault masking.
  • High Channel Density: Supports 32 isolated input points for efficient system scaling.
  • Hot-Swappable: Designed for replacement during active operations to minimize maintenance downtime.
  • Galvanic Isolation: Protects the main processor from field-side electrical surges and noise interference.
  • Precision Monitoring: Offers 12-bit resolution with an accuracy of less than 0.15 percent of Full Scale Range (FSR).

Applications

The 3351S2 is intended for use in Safety Instrumented Systems (SIS) where continuous operation and high fault tolerance are required. Typical applications include emergency shutdown systems (ESD), burner management systems, and critical process monitoring in hazardous environments.

Technical Specifications

Model 3351S2
Input Signal Range 4-20 mA DC
Number of Channels 32 points, isolated
Resolution 12 bits
Accuracy Less than 0.15 percent of FSR
Input Update Rate 50 ms
Power Consumption 10 W
Operating Temperature 0 to 60 deg C

Installation Guidelines

  • Ensure the Tricon chassis is powered down before inserting or removing the module, unless performing a hot-swap in accordance with site safety procedures.
  • Handle the module using ESD-safe practices to prevent damage to sensitive internal components.
  • Verify that field wiring is correctly terminated to the corresponding terminal blocks and that shielded cables are properly grounded to mitigate EMI.
  • Ensure adequate ventilation in the cabinet to maintain the operating temperature within the specified 0 to 60 deg C range.
  • Check for proper seating in the chassis backplane to ensure reliable communication with the main processor.

FAQ

Is the 3351S2 hot-swappable? Yes, the module is designed to be replaced while the system is running, allowing for maintenance without requiring a full process shutdown.

What is the primary function of the TMR design in this module? The Triple Modular Redundancy (TMR) design uses three parallel paths to process inputs; if one path fails, the other two continue to provide accurate data, ensuring the safety loop remains intact.

What type of signals does this module accept? The 3351S2 is configured for standard 4-20 mA DC analog input signals.