Allen-Bradley 1734-ADN DeviceNet Network Adapter for Distributed I/O Applications

Allen-Bradley 1734-ADN DeviceNet Network Adapter for Distributed I/O Applications

The Allen-Bradley 1734-ADN​ is a DeviceNet network adapter manufactured by Rockwell Automation, designed to serve as the communication backbone for POINT I/O systems in industrial automation environments. As a critical component within the Allen-Bradley POINT I/O product family, the Allen-Bradley 1734-ADN​ connects POINT I/O modules to DeviceNet networks, enabling remote I/O functionality with advanced diagnostics and configuration capabilities. Its compact design and DIN rail mounting make it ideal for distributed I/O installations where space is at a premium and reliable communication is essential.

The Allen-Bradley 1734-ADN​ supports DeviceNet communication at 125, 250, or 500 kbps, providing flexibility to match network speed requirements with application needs. The adapter can support up to 63 POINT I/O modules in a single network configuration, delivering substantial I/O capacity in a minimal footprint. Each module connected through the Allen-Bradley 1734-ADN​ is individually isolated, ensuring that faults in one module do not propagate to others and simplifying troubleshooting procedures. The adapter’s diagnostic capabilities provide detailed status information including network health, module status, and configuration errors, enabling maintenance teams to identify and resolve issues quickly.

As part of the modular POINT I/O platform, the Allen-Bradley 1734-ADN​ offers exceptional flexibility and scalability. Its compatibility with the full range of POINT I/O digital, analog, and specialty modules allows it to be deployed across diverse automation architectures, from simple machine control to complex distributed systems. The adapter’s configuration is stored on a removable Compact Flash card, simplifying replacement procedures and enabling quick recovery from hardware failures. For engineers seeking reliable, high-performance DeviceNet communication in a compact form factor, the Allen-Bradley 1734-ADN​ represents an optimal balance of connectivity, diagnostics, and ease of use.

Allen-Bradley 1734-ADN DeviceNet Network Adapter for Distributed I/O Applications

 

Technical Specifications

Parameter Name Parameter Value
Product Model 1734-ADN​
Manufacturer Allen-Bradley (Rockwell Automation)
Product Type DeviceNet Network Adapter
System POINT I/O
Communication Protocol DeviceNet
Baud Rates 125, 250, 500 kbps (selectable)
Maximum Modules 63 POINT I/O modules per adapter
Isolation Individual isolation per I/O module
Configuration Storage Removable Compact Flash card
Network Connector 5-pin Phoenix connector
Operating Temperature -20°C to +55°C
Storage Temperature -40°C to +85°C
Relative Humidity 5% to 95% (non-condensing)
Dimensions (W×H×D) 56.8 mm × 120.7 mm × 78.7 mm
Weight Approx. 300 g
Mounting DIN 35 rail (EN 60715)
Power Supply 24 VDC (from POINT I/O bus)
Ingress Protection IP20 (enclosed cabinet use)
Certifications CE, UL, cUL, C-Tick, Ex

 

Main Features and Advantages

The Allen-Bradley 1734-ADN​ combines robust DeviceNet communication capability with the convenience and reliability that characterize the POINT I/O platform. Its support for multiple baud rates allows engineers to optimize network performance for specific application requirements, balancing communication speed with cable distance limitations. The adapter’s capacity to support up to 63 modules in a single configuration provides substantial I/O density, reducing the number of network nodes required and simplifying system architecture.

One of the most significant advantages of the Allen-Bradley 1734-ADN​ is its individual module isolation. Unlike traditional I/O systems where a fault in one module can affect the entire rack, the Allen-Bradley 1734-ADN​ ensures that each connected module is electrically isolated from the others. This design dramatically simplifies fault isolation and reduces the impact of module failures on overall system operation. The adapter’s diagnostic capabilities provide real-time status information for each connected module, enabling maintenance teams to identify failing modules before they cause process disruptions.

The physical design of the Allen-Bradley 1734-ADN​ reflects Rockwell Automation’s commitment to installation efficiency. The removable Compact Flash configuration card stores all adapter settings, allowing for quick replacement without reconfiguration—a significant advantage during emergency repairs. The DIN rail mounting and compact form factor conserve valuable cabinet space, while the adapter’s compatibility with the full range of POINT I/O modules enables deployment across diverse I/O requirements without additional network infrastructure.

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