Product Summary
The Allen-Bradley 1768-CNBR CompactLogix communication module delivers a robust ControlNet redundant bridge solution for real-time industrial applications. Its design supports deterministic and repeatable data delivery across high-throughput automation systems.
Product Procurement & Buyer Guide for the 1768-CNBR
Why Choose the 1768-CNBR for Redundancy Systems
This module excels in ControlNet media redundancy setups for critical processes. The 1768-CNBR manages up to 48 Logix communication connections simultaneously. Such capability guarantees stable data flow during network switchovers or node failures.
Technical Specifications to Match Your Application
Procurement teams must verify key specs like the 5.14W heat dissipation (17.5 BTU/hour). Its current draw sits at 1.0 Amps from 5.2 Volts DC. The module withstands a 30V isolation voltage tested at 500V AC.
Compatibility and Controller Integration
The 1768-CNBR integrates specifically with certain Allen-Bradley CompactLogix controllers. Engineers should confirm controller compatibility before purchasing. This module belongs to the CompactLogix product line from Rockwell Automation.
Physical Dimensions and Mounting Options
This device weighs just 0.293 kilograms (0.64 pounds) and occupies a single slot width. Its dimensions measure 132 x 56.7 x 105.1 millimeters. You can mount the module via DIN rail or panel mount.
Panel Mounting Hardware Specifications
For panel mounting, use either M4 screws or 8 screws as specified. The module enclosure type is open style for standard industrial environments. The unit carries a T4 temperature code for operational safety.
Step-by-Step Installation Guide for the 1768-CNBR
Mechanical Mounting Procedures
First, secure the 1768-CNBR onto your DIN rail or panel surface. Use the correct hardware to ensure a firm mechanical connection. The single-slot width simplifies insertion into an existing chassis.
Electrical Wiring and Connection Points
Locate the two ControlNet BNC ports and one RJ45 port. Connect your coaxial RG6 quad shield cable to the BNC connectors. Use the RJ45 port for programming via a standard PC.
Powering the Module Correctly
The device draws 1.0 Amps at 5.2 Volts DC for stable operation. Ensure your power supply provides adequate current for peak performance. The module dissipates heat at 5.14W consistently under load.
Network Node Configuration
Configure the 1768-CNBR to support a maximum of 99 ControlNet nodes. This setup allows extensive network expansion without signal degradation. Each node connects reliably at the 5 Mbps communication rate.
Verification and Testing Steps
After installation, test network connections for deterministic data delivery. Verify all 48 Logix communication connections are active and stable. Perform a 60-second isolation test at 500 Volts AC.
