Product Summary
The 1768-CNB is an Allen-Bradley CompactLogix ControlNet interface module. This device enables high-speed data transfers at 5 Mbps. It supports up to 48 connections across 99 nodes. The module handles media redundancy and intrinsic safety applications. Engineers use it for redundant controller systems in harsh environments.
Product Procurement & Buyer Guide
Procurement managers must verify the 1768-CNB fits their system architecture. This module operates on a backplane current of 1 ampere at 5 volts. It consumes only 5.14 watts of power. The thermal dissipation is a low 17.5 BTU/hr. These specs ensure minimal heat generation inside your cabinet.
The module fits into any slot from 1 to 4. It requires a single slot width for installation. You must mount it on a 1768 ControlLogix chassis. Alternatively, you can use a Din Rail or panel mount. This flexibility simplifies integration into existing control panels.
Application engineers need the 1768-CNB for demanding network tasks. It supports a maximum of 99 nodes on a ControlNet network. The communication rate is a steady 5 Mbps. This speed handles high-speed data transfers efficiently. The module also supports redundant media for critical uptime.
The operating temperature range spans 0 to 60 degrees Celsius. Nonoperating conditions allow -40 to 85 degrees Celsius. The module withstands 5 g vibration from 10 to 500 Hz. It also handles an operating shock of 30 g. These tolerances make it ideal for rugged industrial floors.
The 1768-CNB includes two key connectors for network access. One BNC connector supports non-redundant media operation. One NAP connector uses an RJ45 8-pin shielded design. This setup provides flexible wiring for different network topologies. Engineers can quickly adapt to existing ControlNet infrastructure.
Step-by-Step User & Installation Guide
First, power down the entire control system completely. Verify the chassis slot is clean and free of debris. Align the 1768-CNB module with the chosen slot guides. Push the module firmly until it seats securely. Lock the module into place using the retention tabs.
Next, connect the ControlNet BNC cable to the module. Use the BNC connector for standard non-redundant media. Attach the NAP connector for network access port functionality. Ensure all cable connections are tight and secure. Check for any physical damage on the connectors.
Now, apply system power and monitor the module status. The module draws exactly 1 ampere at 5 volts. Verify the power consumption stays near 5.14 watts. Check the thermal dissipation remains at 17.5 BTU/hr. These values confirm proper electrical installation.
Finally, configure the module using Rockwell Automation software. Set the node address within the 99-node limit. Establish up to 48 simultaneous connections as needed. Test communication at the 5 Mbps rate. Confirm data transfers occur without errors or delays.
Logistics & Standard Packaging Details
- One Allen-Bradley 1768-CNB CompactLogix ControlNet Interface Module
- Product dimensions: 132 mm x 56.7 mm x 105.1 mm
- Approximate weight: 0.260 kg (0.57 lb)
- Express delivery shipping is available via FedEx, UPS, and DHL
- Module is shipped in anti-static protective packaging
