1756-CNBR ControlNet Communication Module Allen-Bradley

Product Overview

The Allen-Bradley 1756-CNBR is a ControlNet communication module. It belongs to the ControlLogix series. This module has two ControlNet ports. It also includes one Network Access Port (NAP). The NAP uses an 8-pin RJ45 connector. This module enables high-speed data exchange. It operates at a rate of 5 Mbps. The 1756-CNBR supports up to 64 connections. It can handle up to 99 nodes on the network. It is an open-type enclosure module. This module is lightweight at only 0.64 lbs. It fits into a single slot in the chassis. Maximum power dissipation is 5.5 Watts. Thermal dissipation is 17.4 BTU/hr.

Application Scenarios

Use the 1756-CNBR in industrial automation systems. It works best in ControlLogix platforms. It connects controllers to remote I/O racks. It links drives and other devices. Use it for real-time control applications. It is ideal for manufacturing plants. It works in process control environments. It supports redundant media for high reliability. Use it in discrete and process industries. It is suitable for oil and gas facilities. It also fits in water treatment plants.

Technical Specifications

This module requires 5.1 Volts DC backplane current. It draws 970 milliamps. It also needs 24 Volts DC at 1.7 milliamps. Isolation voltage is 30 Volts Continuous. It uses 1786-RG6 quad shield RG6 coaxial cable. Operating temperature range is 32-140 Fahrenheit. That is 0-60 Celsius. Dimensions are 5.51 x 4.41 x 5.71 inches. The module supports 40-48 Logix communication connections. Maximum connections supported is 64. Maximum number of nodes is 99. It has two ControlNet ports. It has one 8-pin RJ45 NAP port.

Installation & Maintenance Guide

Install the module in a ControlLogix chassis. Ensure the chassis power is off. Align the module with the slot. Slide it in until it clicks. Secure it with the locking screws. Connect the ControlNet cable to the ports. Use 1786-RG6 coaxial cable. Connect the NAP port for programming. Power on the system. Configure the module using software. Regularly check cable connections. Keep the module free from dust. Monitor the module status indicators. Replace the module if faults occur.

Packing List

One Allen-Bradley 1756-CNBR module. One installation guide. This product ships via Fedex, UPS, or DHL.