Product Description
The Allen-Bradley 1756-L84EXT ControlLogix-XT Controller, part of the ControlLogix-XT 5580 series, offers 20 MB of user memory and optional 2 GB nonvolatile memory. It operates within a wide temperature range (-25 to 70C operating, -40 to 85C non-operating) and tolerates up to 70C ambient air without condensation. Key specs include a 5 mA draw at 1.2V DC and 1.2 A at 5.1V DC, 6.2W power dissipation, 21.2 BTU/hr thermal dissipation, and 50V continuous isolation (tested to 1000V AC for 60 seconds) for USB/Ethernet ports to backplane and each other. Weighing approximately 0.394 kg, it meets CE, CSA, IECEx, KC, RCM, Ex, FM, cULus, and EAC standards, tolerates 5-95% non-condensing humidity, and withstands 30 G shock and 2 G vibration (10-500 Hz). It features an open-style enclosure, uses Cat 3 wire for USB and Cat 2 for Ethernet, and supports sequential function chart, relay ladder logic, function block diagram, and structured text programming languages.
Is Your Device Showing These Signs?
The Allen Bradley 1756-L84EXT ControlLogix controller commonly requires repair due to capacitor degradation within the power supply, leading to voltage instability and operational failures. Corrupted firmware necessitates reflashing the controller's memory to restore proper functionality. Communication errors on the EtherNet/IP port are resolved through port replacement or repair of damaged transceivers. Backplane connector damage results in intermittent connectivity and requires connector replacement to ensure reliable module communication. Overheating due to inadequate cooling causes component stress, mandating thermal paste replacement and fan maintenance to prevent premature failure.
Technical specifications
The Allen-Bradley 1756-L84EXT ControlLogix-XT Controller is a robust industrial controller with 20 MB user memory (optional 2 GB nonvolatile), designed for extreme temperatures (-25 to 70C operating). It features low power consumption, high isolation, and meets numerous industry standards (CE, CSA, etc.). It's durable, tolerating high shock and vibration, and supports multiple programming languages. It also specifies wire categories for USB and Ethernet connections.
Our Repair Process for the
1756-L84EXT
Our repair process for the Allen Bradley 1756-L84EXT ControlLogix controller begins with a comprehensive diagnostic assessment to pinpoint the root cause of the malfunction. Power supply issues stemming from capacitor degradation are addressed through complete capacitor replacement, restoring voltage stability. Corrupted firmware is rectified by reflashing the controller's memory with the correct firmware version. EtherNet/IP communication errors are resolved via port replacement or transceiver repair, ensuring network connectivity. Damaged backplane connectors are replaced to eliminate intermittent connectivity and guarantee reliable module communication. Overheating problems are mitigated by replacing thermal paste and performing fan maintenance, preventing component stress and ensuring optimal thermal management.
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.