Product Details
Product Overview
The Allen Bradley 1797-ACNR15 functions as a high-performance communication interface for the FLEX Ex™ I/O platform. This adapter enables seamless data exchange between a ControlNet network and up to eight intrinsically safe (IS) I/O modules located in Zone 1 or Class I, Division 1 hazardous areas. We supply this unit as 100% Brand New and Original, featuring dual ControlNet BNC ports to provide physical media redundancy for critical process control loops in explosive atmospheres.
Technical Specifications
The 1797-ACNR15 operates with specific power and environmental ratings required for volatile industrial sites:
| Feature | Specification |
| I/O Capacity | Supports up to 8 Modules |
| Network Protocol | ControlNet V 1.5 |
| Communication Rate | 5 Mbps |
| Redundancy | Dual (2) BNC ControlNet Ports |
| Intrinsic Safety Rating | Class I Div 1 Groups A-D; Ex ib IIB/IIC T4 |
| Operating Temperature | -20 to 70 °C (-4 to 158 °F) |
| Power Consumption | 8.5 W |
| Output Power | 5.4V DC |
| Vibration Resistance | 2 g @ 10–500 Hz |
| Wire Size (Max) | 3.31 mm² (12 AWG) |
| Status Indicators | Comm A/B, Module Status, Power (LED) |
Engineering Advantages
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Intrinsically Safe Architecture: The 1797-ACNR15 eliminates the need for bulky explosion-proof enclosures or long cable runs from safe zones. By mounting directly in Class I Division 1 areas, it reduces installation costs and simplifies field-side wiring.
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Fault-Tolerant Networking: Dual ControlNet ports ensure system availability. If one coaxial cable fails, the adapter switches communication to the redundant path instantly, preventing process shutdowns in oil, gas, or chemical refinery operations.
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Extreme Thermal Performance: A surrounding temperature rating of up to 85 °C allows this adapter to function in high-heat process environments without the risk of thermal shutdown or signal degradation.
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Streamlined DIN Rail Integration: The module snaps onto standard DIN rails and connects to the FLEX Ex backplane. This modular design permits rapid hardware replacement and scales easily as process requirements expand.
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Rugged Mechanical Build: IEC 68-2-6 compliant vibration testing (2 g) ensures that the unit maintains electrical integrity even when mounted on heavy processing equipment or near high-vibration machinery.
FAQs
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What type of ControlNet cable does this adapter require?
Use Allen-Bradley RG-6/U Quad shield coax. For standard installations, use part number 1786-RG6. For applications requiring high flexibility, select the 1786-RG6F/A cable.
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How many I/O modules can a single 1797-ACNR15 support?
This adapter manages a maximum of eight FLEX Ex I/O modules. Ensure your total backplane power consumption does not exceed the adapter's output limits.
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Can I use this module in non-hazardous areas?
While technically possible, the 1797-ACNR15 is specifically engineered and certified for Intrinsically Safe environments. For standard non-hazardous applications, the 1794-ACNR15 provides a more cost-effective alternative.
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Does this unit arrive in factory-sealed packaging?
Yes. We guarantee this 1797-ACNR15 is 100% Brand New and Original. Each module arrives in the original manufacturer's box with full documentation and quality seals intact.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Implementing FIFO and LIFO Data Sequencing in PLC Programming
Data management serves as a cornerstone of modern industrial automation. Whether tracking materials on a conveyor or managing batch sequences in a process, engineers frequently rely on sequential logic. Two primary structures—First-In-First-Out (FIFO) and Last-In-First-Out (LIFO)—form the bedrock of this data handling. Mastering these blocks allows programmers to optimize complex machine operations efficiently.
Evolving SCADA System Architectures in Industrial Automation
A robust Supervisory Control and Data Acquisition (SCADA) system serves as the heartbeat of modern industrial operations. Understanding SCADA system architecture is vital for engineers designing efficient control systems. These architectures have evolved from isolated, monolithic structures to highly interconnected, networked ecosystems. Choosing the right design requires balancing data visibility, processing power, and long-term scalability requirements.
Choosing the Right Controller: PLC vs. Motion Controller in Industrial Automation
Selecting the optimal control architecture is a foundational decision in industrial automation. Engineers must frequently choose between a Programmable Logic Controller (PLC) and a dedicated Motion Controller. While both systems manage machinery, their underlying design philosophies differ significantly, impacting performance, scalability, and system integration.