• Allen-Bradley 1756-CNBR
  • Allen-Bradley 1756-CNBR
  • Allen-Bradley 1756-CNBR
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Allen-Bradley 1756-CNBR ControlLogix ControlNet Redundant Bridge Module

Allen-Bradley 1756-CNBR ControlLogix ControlNet Redundant Bridge Module

Description

The Allen-Bradley 1756-CNBR is a ControlLogix ControlNet Bridge module designed to facilitate high-speed communication between ControlLogix controllers and other devices on a ControlNet network. This module supports redundant media configurations,...

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Availability: In stock

SKU: 1756-CNBR
Vendor: Allen-Bradley
Category: Communication Module
Related Series:

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Description

The Allen-Bradley 1756-CNBR is a ControlLogix ControlNet Bridge module designed to facilitate high-speed communication between ControlLogix controllers and other devices on a ControlNet network. This module supports redundant media configurations, providing increased reliability for critical industrial automation applications. It acts as a bridge, allowing the controller to communicate with I/O modules, drives, and other controllers across the ControlNet link.

Features

  • Supports redundant ControlNet media for enhanced network fault tolerance.
  • Provides high-speed data transfer rates of 5 Mbps.
  • Integrates seamlessly into the ControlLogix chassis, drawing power directly from the backplane.
  • Designed for high-availability industrial control environments.
  • Supports scheduled and unscheduled communication for deterministic I/O control.

Technical Specifications

Product Model 1756-CNBR
Communication Rate 5 Mbps
Backplane Current (5.1V DC) 970 mA
Current Draw (24V DC) 1.7 mA
Power Dissipation (Max) 5.5 W
Isolation Voltage 30V Continuous
Operating Temperature 0 to 60 degC (32 to 140 degF)

Installation Guidelines

  • Ensure the ControlLogix chassis is powered down before inserting or removing the 1756-CNBR module to prevent electrical damage.
  • Align the module carefully with the chassis slot guides and press firmly until the module is seated and the locking tabs engage.
  • Use appropriate ControlNet cabling and ensure proper termination at both ends of the network segment to maintain signal integrity.
  • Maintain adequate clearance around the module to ensure proper airflow and cooling, as the module dissipates up to 5.5 Watts during operation.
  • Follow standard ESD (Electrostatic Discharge) precautions when handling the module to protect internal circuitry.

FAQ

What is the primary function of the 1756-CNBR?

The 1756-CNBR is a communication bridge that allows a ControlLogix controller to interface with the ControlNet network, enabling data exchange with remote I/O and other controllers.

Does this module support redundant networks?

Yes, the 1756-CNBR is specifically designed to support redundant ControlNet media, which provides a backup communication path in the event of a cable failure.

What is the power requirement for this module?

The module draws 970 mA from the 5.1V DC backplane and 1.7 mA from the 24V DC source.