The 1768-CNBR from Allen-Bradley serves as a critical communication bridge for your industrial network. This module enables deterministic data delivery across redundant media systems. It creates a reliable backbone for demanding real-time applications. Engineers trust this module for high-throughput and repeatable operations.
Product Procurement & Buyer Guide
The 1768-CNBR solves key industrial pain points for control engineers. It provides a redundant ControlNet bridge for critical system architectures. This module supports up to 48 Logix communication connections simultaneously. It also handles a maximum of 99 ControlNet nodes on a single network. This capacity makes it ideal for large-scale distributed control systems.
Procurement managers value its specific electrical and physical parameters. The module draws only 1.0 Amps at 5.2 Volts DC from the backplane. It dissipates just 5.14W of heat (17.5 BTU/hour). This low power consumption reduces thermal management costs within your cabinet. The module weighs approximately 0.64 pounds (0.293 kg).
Its compact dimensions fit easily into tight panel spaces. The unit measures 5.20 x 2.23 x 4.12 inches (132 x 56.7 x 105.1 mm). It occupies only a single slot within the CompactLogix chassis. This space-saving design allows for more I/O modules in your rack. The module supports series A and B revisions for flexible integration.
Step-by-Step User & Installation Guide
Begin installation by selecting the correct mounting method for your panel. The 1768-CNBR supports both DIN rail and panel mounting. For panel mounting, use either M4 screws or 8 screws. Ensure the mounting surface provides adequate support for the module. The open-style enclosure type requires installation in a clean environment.
Connect the module to your ControlNet network using the correct cables. The module features two ControlNet BNC ports for trunk cable connections. It also includes one ControlNet RJ45 port for PC programming access. Use a coaxial RG6 quad shield cable for optimal signal integrity. This cable type ensures reliable communication across all 99 nodes.
Wire the module carefully to meet its isolation specifications. The device provides 30 Volts isolation voltage between circuits. This isolation is tested at 500 Volts AC for 60 seconds. Such rigorous testing guarantees safe operation in industrial environments. Always follow standard safety procedures during installation.
Configure the module for redundant media operation to maximize uptime. The 1768-CNBR supports deterministic and repeatable data delivery. This feature is essential for time-critical control applications. Set the communication rate to 5 Mbps for standard ControlNet operation. This speed balances performance with network stability.
Verify all connections before applying power to the system. Check the T4 temperature code rating for your operating environment. Ensure the ambient temperature remains within specified limits. Proper installation extends the lifespan of this communication module. Always refer to the official Rockwell Automation manual for detailed wiring diagrams.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1768-CNBR ControlNet Bridge Module
- The unit ships in protective anti-static packaging
- Shipping weight is approximately 2 lbs
- Shipping box dimensions are 8 x 8 x 5 inches
- Express delivery is available via FedEx, UPS, and DHL
