Allen Bradley 1797-BCNR Flex Ex ControlNet Coaxial Barrier Module
Allen Bradley 1797-BCNR Flex Ex ControlNet Coaxial Barrier Module
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Brand:Allen Bradley PLC Item No.:1797-BCNR Product Origin:USA Product Dimensions:100 x 70 x 90 mm Product Weight:0.2 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen-Bradley 1797-BCNR Flex Ex ControlNet Coaxial Barrier Module is a critical safety interface used in ControlNet Ex architectures. It enables reliable communication between standard ControlNet systems and intrinsically safe field networks, ensuring compliance with hazardous area requirements while maintaining network performance.
Engineered for demanding industrial environments, it plays a vital role in oil, gas, and chemical processing systems where safety and continuous operation are essential. By isolating network segments and maintaining deterministic communication, it enhances both system integrity and operational safety in complex distributed control systems.
Technical Specifications
Parameter
Specification
Product Model
1797-BCNR
Product Type
ControlNet Ex Coaxial Barrier Module
Brand
Allen-Bradley
Function
Intrinsic safety barrier for ControlNet networks
System Compatibility
Flex Ex / ControlNet Ex systems
Communication Protocol
ControlNet
Installation
DIN rail mounting
Operating Environment
Safe area (Zone 2 / Division 2)
Dimensions
100 × 70 × 90 mm
Weight
0.2 kg (0.44 lb)
Applications
The Allen-Bradley 1797-BCNR Flex Ex ControlNet Coaxial Barrier Module is designed to provide intrinsically safe signal isolation between standard ControlNet networks and ControlNet Ex systems in hazardous industrial environments. It ensures safe communication while maintaining deterministic network performance.
Typical applications include:
Oil & gas production facilities
Petrochemical and refinery automation systems
Offshore platforms and drilling operations
Hazardous area (Ex Zone) distributed I/O systems
Turbine and compressor control networks
Process control systems requiring intrinsic safety barriers
Remote ControlNet network segmentation
Safety-critical industrial communication architectures
Advantages
Provides galvanic isolation between ControlNet and ControlNet Ex networks
Ensures intrinsically safe communication in hazardous environments
Supports deterministic ControlNet communication performance
Enhances system safety by isolating field and safe-area networks
Designed for high reliability in continuous industrial operation
Reduces risk of electrical faults propagating into hazardous zones
Supports redundant and complex distributed I/O architectures
Robust construction suitable for harsh industrial conditions
DIN rail mounting for efficient control cabinet integration
Compatible with Flex Ex system architecture
Technical FAQs
1. What is the main function of the 1797-BCNR?
It acts as a coaxial barrier, isolating ControlNet networks from ControlNet Ex systems for intrinsic safety.
2. Where is it installed in the system?
It is typically installed in the safe area between standard ControlNet and hazardous area networks.
3. Does it provide electrical isolation?
Yes, it provides galvanic isolation between network segments.
4. What protocol does it support?
It supports ControlNet communication protocol.
5. Is it suitable for hazardous environments?
Yes, it is specifically designed for Ex (hazardous area) applications.
6. How many devices can it support?
It can support multiple ControlNet Ex nodes depending on network configuration.
7. Does it support redundant communication?
Yes, it is used in architectures that support redundant or segmented ControlNet networks.
8. Is it an active or passive device?
It functions as a specialized barrier/interface module within the network infrastructure.
9. What industries commonly use it?
Oil & gas, petrochemical, offshore, and heavy industrial automation sectors.
10. Why is a coaxial barrier needed in ControlNet Ex systems?
Because it ensures safe separation between standard industrial networks and intrinsically safe field networks, preventing hazardous energy transfer.
