Product Summary
Engineers use the Allen-Bradley 1768-CNBR for deterministic control in critical systems. This module delivers redundant bridge communication over a ControlNet network. It supports high-throughput applications with a reliable 5 Mbps data rate for real-time automation tasks.
Step-by-Step Installation Guide for the 1768-CNBR
Proper mounting ensures reliable operation for this communication module. The 1768-CNBR requires a single slot within a CompactLogix chassis. You can mount it using a DIN rail or a panel mount. For a panel mount, use either M4 screws or 8 screws for a secure fit. This module has an open style enclosure for better airflow. Its compact dimensions are 132 x 56.7 x 105.1 millimeters.
Mechanical Setup and Wiring
Begin by securing the module to your chosen mounting surface. The module weighs just 0.64 pounds or 0.293 kilograms. Connect the coaxial RG6 quad shield cable to your network. This module uses two ControlNet BNC connectors for trunk cable connections. Use the single ControlNet RJ45 port for programming via a PC. This setup connects to up to 99 ControlNet nodes on your network.
Maintenance, Troubleshooting & Longevity Protocols
Maintaining the 1768-CNBR ensures long-term system reliability. The product lifecycle is obsolete, so follow strict maintenance protocols. Regular inspection prevents unexpected downtime in critical processes. This module draws 1.0 Amps of current at 5.2 Volts DC. It dissipates 5.14W of heat or 17.5 BTU per hour which requires good airflow.
Scheduled Inspection and Cleaning
Check all cable connections for signs of wear or damage each quarter. Verify the isolation voltage of 30 Volts during routine testing. The factory tests this at 500 Volts AC for 60 seconds. Clean the open style enclosure with a dry, low-pressure air stream. This prevents debris from interfering with the internal circuitry.
Error Code Mitigation
If a communication fault occurs, first check the BNC connections. Then verify the integrity of the RG6 quad shield cable. Confirm that your network does not exceed the maximum of 99 nodes. The module supports up to 48 Logix communication connections. A System Configuration tool can help verify the node settings and connections. Always confirm the T4 temperature code is appropriate for your environment.
Logistics & Standard Packaging Details
- One Allen-Bradley 1768-CNBR ControlNet Bridge Module (Series A or B)
- No additional cables or adapters are included in the standard shipment.
- Shipping weight is approximately 2 lbs with dimensions of 8 x 8 x 5 inches.
- We ship orders using express delivery via FedEx, UPS, and DHL.
