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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
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
Shaanxi Qindiyuan Environmental Protection Equipment Co., Ltd.
Founded in 2018 | Headquartered in Fengdong New Town, Xi'an, Shaanxi Province, China
Company Overview
Shaanxi Qindiyuan Environmental Protection Equipment Co., Ltd. is a leading manufacturer and supplier of industrial automation contr...
Shaanxi Qindiyuan Environmental Protection Equipment Co., Ltd.
Founded in 2018 | Headquartered in Fengdong New Town, Xi'an, Shaanxi Province, China
Company Overview
Shaanxi Qindiyuan Environmental Protection Equipment Co., Ltd. is a leading manufacturer and supplier of industrial automation contr...
