Product Details
Product Description
The Allen Bradley 1794-ACNR is a ControlNet redundant media adapter designed for the FLEX I/O 1794 series. It provides dual-channel communication capability, ensuring reliable data transfer and redundancy in distributed control systems. With DIN rail mounting, robust isolation, and support for ControlNet protocol version 1.25, this adapter is engineered for demanding industrial environments.
Technical Specifications
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Manufacturer Allen Bradley
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Product Line FLEX I/O 1794
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Product Type ControlNet Redundant Media Adapter
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Part Number 1794-ACNR
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Weight 0.81 lbs (0.37 kg)
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Input Voltage Range 19.2–31.2 V DC
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Nominal Voltage 24 V DC
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Power Consumption 400 mA max from external 24 V supply
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Power Dissipation 4.6 W max @ 19.2 V DC
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Thermal Dissipation 15.7 BTU/hr @ 19.2 V DC
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FlexBus Output Current 640 mA max
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Inrush Current 23 A for 2 ms
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Isolation Voltage 850 V DC continuous (basic insulation type)
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Communication Protocol ControlNet V1.25
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Data Transfer Speed 5 Mbps
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Communication Ports Two BNC connectors (Comm A and Comm B)
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Indicators Comm A (red/green), Comm B (red/green), I/O status (red/green)
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Mounting DIN rail
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Operating Temperature –20 °C to +55 °C (–4 °F to +131 °F)
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Shock Resistance IEC 60068-2-27, 30 g (unpackaged)
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Vibration Resistance IEC 60068-2-6, 5 g @ 10–500 Hz
Application Scenarios
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Redundant communication in distributed FLEX I/O systems
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Industrial automation requiring high reliability and fault tolerance
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Control systems with long-distance communication up to 50 ft
FAQ
Q: What protocol version does the 1794-ACNR support? A: It supports ControlNet protocol version 1.25.
Q: How many communication ports are available? A: Two BNC ports for redundant media connections.
Q: What is the maximum FlexBus output current? A: 640 mA maximum.
Comparable Models
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1794-ACNR: Redundant ControlNet adapter (this model)
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1794-ACN15: Standard ControlNet adapter without redundancy
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1794-ACNR15: Enhanced redundant adapter with extended features
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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
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.