Allen-Bradley 1794-ACNR15 Power Module
Product Overview
The 1794-ACNR15 is a redundant communication adapter module from Rockwell Automation's Allen-Bradley FLEX I/O series. This key component connects local controllers to distributed FLEX I/O modules in remote I/O systems, providing deterministic data transmission via the ControlNet bus for stable and reliable distributed signal acquisition and control in industrial automation systems.
The module's most significant feature is its ControlNet redundant communication capability. Equipped with dual ControlNet ports, it enables redundant topology deployment where data automatically switches to the backup link if one communication link fails, effectively preventing system downtime and improving reliability for industrial scenarios with high communication stability requirements.
Technical Specifications
| Parameter Category |
Specifications |
Additional Details |
| Product Model |
1794-ACNR15 |
Allen-Bradley FLEX I/O Series Redundant ControlNet Communication Adapter |
| Communication Parameters |
Protocol: ControlNet
Ports: 2 ControlNet BNC
Speed: 5 Mbps |
Supports redundant topology with automatic link switching for uninterrupted data transmission |
| Power Supply |
Input: 19.2-31.2V DC
Current: 400 mA max
Power: 3.4W max |
Requires external 24V DC power supply with 0.33-2.5mm² insulated copper wire |
| I/O Compatibility |
Supports 8 FLEX I/O modules
FlexBus: 640 mA max |
Automatically identifies connected 1794 series modules for plug-and-play functionality |
| Physical Specifications |
Dimensions: 87×94×69mm
Weight: 220g
Rating: IP20 |
35mm DIN rail mounting, compact design for control cabinet installation |
| Environmental |
Temp: -25℃ to 55℃
Humidity: 5-95%
Vibration: 5.0G |
Stable operation in harsh industrial environments including machine tools and water treatment |
| Certifications & Indicators |
CE, UL, CSA certified
LED status indicators |
Visual communication link and I/O status monitoring for rapid troubleshooting |
| Software & Firmware |
Studio 5000, RSLinx compatible
Firmware upgradeable |
Seamless integration with Rockwell Logix 5000 control systems |
Core Functional Features
- Redundant Communication: Dual ControlNet ports with automatic failover to backup link for uninterrupted operation in critical industrial applications
- High-Speed Deterministic Transmission: 5 Mbps ControlNet protocol ensures real-time control capabilities for multi-station linkage and closed-loop control scenarios
- Seamless Compatibility: Automatic identification of 1794 series I/O modules with plug-and-play functionality and integration with Rockwell control systems
- Convenient Fault Diagnosis: Three sets of LED indicators (Comm A, Comm B, I/O status) for visual monitoring and rapid troubleshooting
- Flexible Deployment: Standard 35mm DIN rail mounting with compact design for installation near field equipment, reducing signal interference and cabling costs
- Harsh Environment Adaptability: Wide operating temperature range, strong vibration resistance, and IP20 protection for stable operation in demanding industrial conditions