1794-ADN | Allen-Bradley | Flex I/O DeviceNet Adapter Module

Product Description

The Allen-Bradley 1794-ADN is a DeviceNet adapter module designed for use with the Flex I/O 1794 system. It enables communication between distributed I/O modules and a DeviceNet network, providing a flexible and scalable solution for industrial automation. The module simplifies system expansion and allows integration of multiple I/O nodes over a single network connection.

Built for reliable operation, the 1794-ADN supports multiple baud rates and ensures efficient data exchange with high immunity to electrical noise and vibration. Its compact design supports both DIN rail and panel mounting, offering flexibility in control cabinet installations.

Key Specifications

• Manufacturer: Allen-Bradley

• Model: 1794-ADN

• Product Type: DeviceNet Adapter Module

• Series: Flex I/O 1794

• Communication Port: One DeviceNet interface

• Communication Rate: Selectable 125 Kbps, 250 Kbps, or 500 Kbps

• Input Voltage Range: 19.2 to 31.2 VDC

• Nominal Voltage: 24 VDC

• Power Consumption: 90 mA maximum

• Power Dissipation: 7.6 W maximum at 19.2 VDC

• FlexBus Output Current: 640 mA maximum at 5 VDC

• Isolation Voltage: 50 V continuous

• Indicators:

• Module/Network Status (Red/Green)

• I/O Status (Red/Green)

• Supported Cable: Belden YR-29832 or equivalent DeviceNet cable

• Wire Size: Up to 12 AWG stranded, with 1.2 mm insulation maximum

• Mounting: DIN rail or panel mount

• Operating Temperature: 0°C to 55°C (32°F to 131°F)

• Storage Temperature: -40°C to 85°C (-40°F to 185°F)

• Vibration Resistance: 5 g, 10–500 Hz (IEC 68-2-6 standard)

• Shock Rating: 30 g peak, 11 ms pulse width

• Weight: 0.38 lbs (0.17 kg)

Features

• Compact, lightweight adapter for distributed I/O systems

• Multiple selectable baud rates for flexible network integration

• Visual diagnostic indicators for quick network troubleshooting

• Rugged design for high-vibration and high-temperature environments

• Supports up to 8 Flex I/O modules in a single assembly

Application Scenarios

The Allen-Bradley 1794-ADN adapter is ideal for use in industrial automation systems requiring remote I/O connectivity. It is widely used in material handling, process control, automotive assembly lines, and other distributed control environments where DeviceNet communication is standard.

FAQs

Q: How many Flex I/O modules can the 1794-ADN support?
A: The module supports up to eight Flex I/O modules per adapter on a single DeviceNet node.

Q: What cable should be used for optimal performance?
A: Belden YR-29832 or equivalent DeviceNet-compliant coaxial cable is recommended for best communication reliability.

Q: Does the 1794-ADN require external power?
A: Yes, the module operates on 24 VDC supplied through the DeviceNet network connection.