1768-CNB Allen-Bradley CompactLogix ControlNet Module

Product Overview

The 1768-CNB is a CompactLogix ControlNet interface module from Allen-Bradley. It connects to ControlNet networks for reliable data exchange. This module supports up to 48 connections at once. It can handle up to 99 nodes on the network. The 1768-CNB fits in one slot of a 1768 chassis. It draws 1 ampere at 5 volts from the backplane. Power consumption is 5.14 watts. Thermal dissipation is 17.5 BTU per hour. The module weighs 0.260 kilograms. Dimensions are 132 mm by 56.7 mm by 105.1 mm. It works with redundant controller systems and media redundancy.

Application Scenarios

Use the 1768-CNB in industrial automation systems that require fast ControlNet communication. It suits applications needing high-speed data transfers, such as packaging lines or material handling. The module supports redundant controllers for critical processes. It also works in intrinsically safe environments. Typical industries include automotive, food and beverage, and oil and gas.

Technical Specifications

Communication Details

The module uses a ControlNet network with a 5 Mbps data rate. It provides 2 connectors: one BNC for non-redundant media and one NAP (RJ45) for programming. Maximum nodes is 99. It supports 48 connections.

Electrical Characteristics

Backplane current is 1 ampere at 5 volts DC. Power consumption equals 5.14 watts. Power dissipation is also 5.14 watts. Isolation voltage is 30 volts.

Environmental Limits

Operating temperature range is 0 to 60 degrees Celsius. Nonoperating range is -40 to 85 degrees Celsius. Relative humidity can be 5% to 95% noncondensing. Vibration rating is 5 g at 10 to 500 Hz. Operating shock is 30 g. Nonoperating shock is 50 g.

Installation & Maintenance Guide

Mount the module on a DIN rail or panel. Install it in any slot 1 through 4 of a 1768 chassis. Connect the ControlNet cable to the BNC connector. Use the NAP port for network access. Ensure proper grounding to avoid noise. No routine maintenance is required. Keep the module in a clean, dry environment.

Packing List

The package includes one 1768-CNB module, a quick start guide, and a warranty card. All items are securely packed. Shipping methods available are FedEx, UPS, or DHL.