Allen-Bradley 1794-ACNR15XT FLEX I/O ControlNet Dual Media Adapter

Product Overview

The Allen-Bradley 1794-ACNR15XT functions as a high-performance communication interface that connects FLEX I/O modules to a ControlNet network. This "XT" version features hardened components specifically designed for extreme environments, supporting a wide operating temperature range from -20°C to +70°C. The dual-media capability provides port redundancy, ensuring continuous data transmission even if one cable path fails. We supply this unit in 100% Brand New condition, providing an original, zero-hour hardware solution for mission-critical remote I/O deployments.

Technical Specifications

• Network Protocol: ControlNet

• Media Support: Dual Media (Redundant Coax)

• Operating Temperature: -20°C to +70°C (-4°F to +158°F)

• Input Voltage: 24V DC

• Mounting Type: DIN Rail

• Enclosure Rating: IP20, Open Style

• I/O Module Support: Up to 8 FLEX I/O modules

• Weight: 0.31 lbs (0.14 kg)

• Communication Rate: 5 Mbps

Engineering Advantages

The 1794-ACNR15XT addresses specific industrial networking challenges through its ruggedized design and redundant architecture:

• Extreme Thermal Resilience: The XT hardware specification eliminates the need for expensive enclosure cooling or heating systems. It maintains stable communication in outdoor cabinets or non-climate-controlled factory zones where standard adapters would suffer thermal drift or hardware failure.

• Redundant Media Pathing: The dual BNC connectors support redundant ControlNet cabling. This architecture prevents system-wide downtime by automatically switching data traffic to the secondary cable if the primary line sustains physical damage or signal interference.

• High-Speed Deterministic Control: ControlNet technology provides a deterministic, repeatable data link for time-critical I/O. This ensures that safety interlocks and high-speed motion commands arrive at the processor with consistent latency, regardless of overall network traffic.

• Rapid Distributed Deployment: The compact DIN-mount design allows engineers to place I/O points closer to the actual field sensors and actuators. This proximity reduces long runs of expensive multi-core cables and minimizes signal degradation from electromagnetic interference (EMI).

FAQs

• Can I use the 1794-ACNR15XT to replace a standard 1794-ACNR15?

  Yes. The XT version serves as a direct, ruggedized replacement for the standard model. It shares the same footprint and configuration logic but offers a significantly higher temperature rating for improved reliability.

• Does this adapter require a separate power supply for the connected I/O?

  The 1794-ACNR15XT requires a 24V DC input to power its own internal logic and the Flexbus. Depending on the total current draw of your 8 I/O modules, you must ensure your 24V supply provides sufficient amperage for the entire stack.

• Is this a Brand New original product?

  Yes. We guarantee this 1794-ACNR15XT is 100% Brand New original stock. In extreme temperature applications, using brand-new hardware is vital to ensure the internal capacitors and transceivers meet their full rated lifespan under thermal stress.

• What type of cable does the ControlNet port use?

  The module uses standard RG-6 quad-shielded coaxial cable with BNC connectors. For optimal performance in "XT" environments, we recommend using cables and taps also rated for extended temperatures.