Allen-Bradley 1734-PDN POINT I/O DeviceNet Adapter Module

The Allen-Bradley 1734-PDN, also cataloged as the 1734-PDN DeviceNet Adapter Module, operates as a dedicated hardware component for communication interfacing and backplane power distribution within POINT I/O 1734 platforms.

Hardware Specifications

Backplane Bus Communication Velocity and Deterministic Networks

• The Allen-Bradley 1734-PDN module manages high-speed backplane bus communication velocity across DeviceNet networks, enabling master units to communicate with subnets.
• Hardware design incorporates two separate power switches dedicated to isolating system logic power from DeviceNet network power.
• High-density I/O configurations are managed up to the maximum total POINTBus backplane current limit of 1300 mA without expansion power supply capabilities.
• Integrated diagnostic hardware continuously monitors network traffic to optimize data collection and fault detection mechanisms.

Frequently Asked Questions

Q: Can an expansion power supply module be added to extend the backplane current of the 1734-PDN?

A: No, the 1734-PDN cannot utilize an expansion power supply, requiring the total POINTBus backplane current draw of all connected modules to remain strictly within the 1300 mA limit.

Q: How are network nodes addressed when using the 1734-PDN on a DeviceNet network?

A: Each individual POINT I/O module connected through the 1734-PDN adapter functions as an independent, separate node on the primary DeviceNet network.

Field Installation Guidelines

Mount the module directly onto a standard 35 mm DIN rail within a grounded metallic enclosure. Verify that all 24 VDC supply lines match the rated input parameters and maintain correct polarity to prevent triggering internal reverse polarity protection circuits. Separate field power lines from high-voltage AC cables and variable frequency drive outputs to preserve high noise resistance on the plant floor. When attaching the DeviceNet connector, ensure signal wire shielding is properly terminated and grounded according to standard network installation guidelines.