Features:
- True Redundant Media for Zero-Downtime Operations
- Non-Disruptive Diagnostics with NAP & Status Display
- Legacy I/O Optimization with Flexible Addressing
The Allen Bradley 1771-ACNR15 is equipped with dual BNC connectors that support fully redundant ControlNet trunk lines. In critical processes such as refinery shutdown systems or mining conveyors, a single cable break will not stop your production. The adapter automatically fails over from Channel A to Channel B with no logic program interruption, ensuring continuous I/O refresh.
Unlike passive adapters, the Allen Bradley 1771-ACNR15 features a built-in Network Access Port (NAP) and an alphanumeric status display. Engineers can plug a programming terminal into the NAP to monitor traffic or change parameters without disconnecting the main trunk cable. The front-panel display provides real-time mnemonics (e.g., DUPL NODE, SHRT BP, IDLE), allowing field technicians to diagnose duplicate addresses or backplane shorts in under 30 seconds.
The Allen Bradley 1771-ACNR15 supports 2-slot, 1-slot, and 1/2-slot addressing modes. This flexibility allows you to mix standard 8-point modules, high-density 16-point modules, and quad-density 32-point modules in the same chassis. For system upgrades, you can maximize I/O density by using 1/2-slot addressing, effectively doubling the I/O count per physical chassis without adding hardware.
The 1771-ACNR15 Allen Bradley ControlNet Redundant Media Adapter Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1771-ACNR15 ControlNet Redundant Media Adapter Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen Bradley 1771-ACNR15 ControlNet Redundant Media Adapter Module
General
- Manufacturer Allen Bradley
- Model 1771-ACNR15
- Condition New Original ready stock
- Product Family 1771-P4S1,1771-ACN15,1771-ACN
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Oil & Gas Pipeline SCADA: The Allen Bradley 1771-ACNR15 ensures reliable remote I/O data acquisition over long distances (up to 1,000m per segment) where redundant coax prevents communication loss due to rodent damage or corrosion.
- Mining & Metals (Conveyor Systems): Used to control 1771 DC drive interfaces and motor control centers (MCCs) in high-vibration environments, leveraging the 5 Mbps deterministic speed for emergency stops.
- Water/Wastewater Treatment Plants: Ideal for retrofitting legacy PLC-5 systems that control pump stations and chemical dosing, allowing operators to add redundant media without rewriting ladder logic.
- Automotive Assembly Lines: Deployed in body shops and paint shops to connect I/O racks for robotic welding controls, where the NAP port allows line-side troubleshooting without halting production.
- Indoor Industrial Use Only: The Allen Bradley 1771-ACNR15 is rated for pollution degree 2 (non-conductive pollution) and must be installed in a NEMA-rated enclosure if exposed to airborne dust or oil mist.
- Temperature Management: Relies on convection cooling; requires 2 inches (50mm) of free space above and below the module for passive airflow. Sustained operation at 60°C requires a verified chassis backplane current below 4A total.
- Shock & Vibration: Designed for 2.5G peak acceleration (operating) and 5G (non-operating) per IEC 68-2-6, making it suitable for compressor skids or vibrating screens but not direct engine mounting.
- Altitude Derating: Maximum operating altitude is 2,000 meters (6,560 feet) without derating; above this, the 60°C maximum temperature must be reduced by 5°C per 1,000 meters.
- CE Marking (EMC Directive 89/336/EEC): The Allen Bradley 1771-ACNR15 complies with EN 50081-2 (industrial emission) and EN 50082-2 (industrial immunity), ensuring it does not interfere with nearby sensitive instrumentation.
- Low Voltage Directive (73/23/EEC): Tested to EN 61131-2 (Programmable Controller safety requirements), confirming safe isolation between the ControlNet ports and the chassis backplane.
- Hazardous Location (Restricted): Not ATEX or IECEx certified. For Class I, Division 2 (gas) environments, the module must be installed in a purged or explosion-proof enclosure as per API 14F.
- Obsolete Status Management: While no longer in active production by Rockwell Automation, the Allen Bradley 1771-ACNR15 remains supported via third-party lifecycle management services (repair/exchange) until 2030+ for legacy asset protection.