Allen-Bradley Redundant ControlNet Ex Barrier for 1797-BCNR Flex Ex I/O Series Devices

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Allen-Bradley Redundant ControlNet Ex Barrier for 1797-BCNR Flex Ex I/O Series 

Product Overview

The Allen-Bradley Redundant ControlNet Ex Barrier is a critical safety component designed for use with 1797-BCNR Flex Ex I/O Series devices in hazardous environments (Class I, Division 2/Zone 2). It provides intrinsic safety (IS) isolation and redundant communication paths, ensuring uninterrupted data transmission in oil & gas, chemical, and pharmaceutical applications where explosive atmospheres may exist .

Key Features

1. Hazardous Area Compliance

   • Certified for Class I, Division 2 (North America) and Zone 2 (ATEX/IECEx) installations .

   • Enables intrinsically safe (IS) Flex Ex I/O modules to interface with non-IS ControlNet networks .

2. Redundant Communication

   • Supports dual-channel ControlNet Ex for fault-tolerant networking .

   • Maintains deterministic data transfer (5 Mbps) even if one path fails .

3. Seamless Integration

   • Compatible with 1797-BCNR adapters and Flex Ex I/O modules (up to 8 modules per segment) .

   • Works with Studio 5000 for configuration and diagnostics .

4. Robust Design

   • DIN rail mounting with IP20 protection (requires enclosure for harsh environments) .

   • -40°C to +70°C operating range .

Technical Specifications

Applications

• Oil & gas (wellhead monitoring, refinery control) .

• Chemical plants (reactor safety systems) .

• Pharmaceutical (batch process automation).

Installation Notes

• Use shielded Belden 9463 cables for noise immunity .

• Pair with 1797-ACNR15 adapters for full redundancy .

• Configure via RSLogix 5000 for seamless integration with PlantPAx DCS 

The structure and details of the product：

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