Product Introduction
When network downtime halts your production line, the Allen-Bradley 1794-ACN15 Redundant Media ControlNet Adapter ensures continuous communication for critical control systems. Part of the 1794 Flex I/O family, this adapter integrates seamlessly into ControlNet networks, bridging remote I/O with a reliable, cost-effective solution. With its redundant media capability, the 1794-ACN15 minimizes the risk of single-point failures, maximizing uptime and reducing costly interruptions—a clear ROI advantage for any industrial automation setup.
Technical Specifications
| Parameter |
Value |
| Communication Protocol |
ControlNet |
| Communication Rate |
5 Mbps |
| Number of ControlNet Ports |
1 |
| Flexbus Output Current |
640 mA maximum |
| Input Voltage Range |
19.2 to 31.2 V DC |
| Power Dissipation |
4.6 W maximum at 19.2 V DC |
| Current Draw |
450 mA maximum |
| Inrush Current |
23 A for 2 ms |
| Isolation Voltage |
850 V DC |
| Operating Temperature |
0 to 55 °C (32 to 131 °F) |
| Storage Temperature |
-40 to 85 °C (-40 to 185 °F) |
| Mounting |
DIN Rail / Panel Mount |
| Weight |
0.3 lb (0.136 kg) |
Industry Applications
The Allen-Bradley 1794-ACN15 excels in manufacturing lines requiring redundant communication paths. For example, in a packaging plant where a single ControlNet drop causes line stoppages, this adapter provides an alternate media path, keeping operations running. Similarly, in oil and gas facilities with harsh electrical noise, the 1794-ACN15's robust isolation (850 V DC) ensures reliable data transfer, preventing costly shutdowns. Its ability to support up to eight Flex I/O modules makes it ideal for scalable remote I/O racks in discrete and process automation.
Installation & Setup Guidance
Mount the Allen-Bradley 1794-ACN15 on a DIN rail or panel using the provided slots. Use Belden RG-6/U coaxial cable for the ControlNet connection. For power wiring, use single wire (0.33–2.5 mm² / 22–12 AWG) or double wire (0.33–1.3 mm² / 22–16 AWG) copper rated at 75 °C or higher. Keep power wiring under 10 meters to minimize voltage drop. The module draws 450 mA maximum; verify your power supply can handle the combined load of up to eight I/O modules.
Compatibility & Integration
The 1794-ACN15 works with any ControlNet controller, such as Rockwell Automation ControlLogix or CompactLogix processors. It integrates with the full 1794 Flex I/O family—digital, analog, and specialty modules. The module's status indicators (Comm A, Comm B, I/O Status) simplify diagnostics. For redundant media, connect both ControlNet cables to the single port; the adapter automatically selects the active path.
Selection Guide & Purchasing Advice
Before ordering the Allen-Bradley 1794-ACN15, confirm your system's ControlNet baud rate and ensure you have the correct coaxial cable (Belden RG-6/U or equivalent). Verify that your power supply provides 19.2–31.2 V DC with sufficient current for the adapter and all connected Flex I/O modules. For volume or custom requirements, contact UBEST Automation—your trusted source for industrial automation spares. Rest assured, the 1794-ACN15 is built for long-term reliability, making it a smart investment for critical networks.