1756 DNB DEVICE NET MODULE

Overview of Allen-Bradley 1756-DNB DeviceNet Module

The Allen-Bradley 1756-DNB is a ControlLogix DeviceNet Scanner communication module that acts as a DeviceNet bridge connecting DeviceNet devices to a ControlLogix controller. It supports DeviceNet communication rates of 125, 250, and 500 Kbps and can manage up to 64 device nodes on the network. The module is designed for robust industrial environments, featuring isolation between the DeviceNet network and backplane, and certified for safety and performance standards.

Key Features

• DeviceNet communication rates: 125 Kbps (max 500 m), 250 Kbps (max 250 m), 500 Kbps (max 100 m)
• Supports up to 64 DeviceNet nodes
• Backplane current draw: 850 mA @ 5.1 V DC, 3 mA @ 24 V DC
• DeviceNet current draw: 60 mA max @ 24 V DC
• Power dissipation: 5.8 W; thermal dissipation: 19.8 BTU/hr max
• Isolation voltage: 30 V continuous between DeviceNet network and backplane
• Communication port: 1 linear DeviceNet open-style 5- or 10-pin plug
• USB 2.0 programming port for local device configuration (temporary use)
• Open-style chassis-mount module fitting any ControlLogix slot
• Operating temperature: 0 to 60 °C (32 to 140 °F); storage temperature: -40 to 85 °C (-40 to 185 °F)
• Relative humidity max: 95% non-condensing
• Meets multiple IEC and ODVA standards; cUL, CE, CSA certified

Technical Specifications

Applications

The 1756-DNB DeviceNet module is widely used in industrial automation systems for connecting DeviceNet networks of sensors, actuators, and devices to ControlLogix controllers. It supports efficient data exchange, network diagnostics, and device management in manufacturing, process control, and factory automation environments.