Product Description
The Allen-Bradley 1747-L20 is a fixed-hardware SLC 500 processor module with 1K instruction capacity, integrated power supply, and fixed I/O. It uses capacitor-backed RAM memory, operates at 47-63 Hz, and has a 5-year battery life. Performance specifications include a typical scan time of 8 ms/1K and a bit execution time of 4 ms. Power requirements include a 40A inrush rating and a 50 VA maximum. It uses 14 AWG wiring. The system is susceptible to power loss from voltage drops or temporary disruptions. Operating conditions are 5-95% relative humidity (non-condensing) and 0-60C (32-140F) temperature, with a storage temperature range of -40-85C (-40-185F). Avoid exposing the module to unfiltered air to prevent contamination and potential damage; in extreme heat, consider using air conditioning within the enclosure.
Is Your Device Showing These Signs?
The Allen Bradley 1747-L20 SLC 5/02 processor commonly experiences issues such as program corruption due to memory failure, requiring memory replacement and PLC reprogramming. Communication faults on the DH-485 network are often traced to faulty communication ports or incorrect network configuration, necessitating port repair or network reconfiguration. Power supply degradation leads to intermittent operation and processor faults, demanding power supply replacement. Firmware corruption during upgrades results in PLC malfunction, requiring firmware re-flashing or processor replacement. I/O module communication errors are frequently caused by backplane issues or module failures, mandating backplane inspection or module replacement.
Technical specifications
The Allen-Bradley 1747-L20 is a fixed-hardware SLC 500 processor with 1K instruction capacity, integrated power supply, and fixed I/O. Key features include capacitor-backed RAM, 47-63 Hz operation, 5-year battery life, 8 ms/1K scan time, and 4 ms bit execution time. It requires 40A inrush and 50 VA max power, using 14 AWG wiring. It's vulnerable to power loss and requires specific operating conditions: 5-95% non-condensing humidity, 0-60C operating temperature, and -40-85C storage temperature. Protection from unfiltered air and extreme heat is crucial.
Our Repair Process for the
1747-L20
Our repair process for the Allen Bradley 1747-L20 SLC 5/02 processor begins with a comprehensive diagnostic evaluation to pinpoint the failure. Program corruption due to memory failure requires immediate memory replacement followed by complete PLC reprogramming. Communication faults on the DH-485 network are resolved through port repair or precise network reconfiguration. Power supply degradation necessitates complete power supply replacement to ensure stable operation. Firmware corruption demands immediate firmware re-flashing; if unsuccessful, processor replacement is mandatory. I/O module communication errors are rectified through thorough backplane inspection and, if necessary, I/O module replacement.
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.