Product Description
The Allen-Bradley 1771-A3B is a 12-slot universal I/O chassis for 1771 PLC-5 systems, designed for mounting 1771 I/O modules. It facilitates communication between modules and the processor/I/O adapter via its backplane, which provides 24A of current. The chassis supports both 19-inch rack and back-panel mounting, requiring specific clearances for proper cooling. It measures 483 x 339 x 221 mm (19.0 x 13.35 x 8.7 inches), weighs 5.9 kg (13 lbs), and is certified for Class 1, Division 2, Groups A, B, C, and D environments with an operating temperature of 0-60C (32-140F) and humidity of 5-95% non-condensing.
Is Your Device Showing These Signs?
The Allen Bradley 1771-A3B I/O chassis commonly experiences issues such as backplane corrosion leading to communication failures, power supply degradation causing intermittent operation or complete system shutdown, and I/O module slot malfunctions resulting in inability to recognize or properly interface with installed modules. Resolve these problems through thorough inspection and cleaning of the backplane, replacement of the power supply with a compatible unit, and testing/replacement of faulty I/O module slots to restore optimal functionality and prevent PLC downtime. Address thermal issues by ensuring adequate ventilation and cooling.
Technical specifications
The Allen-Bradley 1771-A3B is a 12-slot chassis for 1771 PLC-5 I/O modules. It allows communication between modules and the processor via its backplane, providing 24A of current. It supports both rack and back-panel mounting, has specific size and weight, and is certified for use in certain hazardous environments within a specified temperature and humidity range.
Our Repair Process for the
1771-A3B
Our repair process for the Allen Bradley 1771-A3B I/O chassis begins with a comprehensive inspection to identify backplane corrosion, power supply degradation, and I/O module slot malfunctions. We meticulously clean any backplane corrosion to ensure proper communication. The degraded power supply is replaced with a fully compatible unit to eliminate intermittent operation or system shutdowns. Faulty I/O module slots are tested and replaced as needed to guarantee proper recognition and interface with installed modules. Finally, we verify adequate ventilation and cooling to mitigate thermal issues and prevent future failures, thus restoring optimal functionality and minimizing PLC downtime.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.
Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY