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Product Description
The Allen-Bradley/Rockwell Automation 1772-LI Processor Control Module, part of the PLC-2/20's 1772 Series, provides control, timing, and interfacing for other processor modules. Unique to the PLC-2/20, it features a "PROC FAULT" indicator, visible through the front panel window, to signal processor malfunctions. Located in the second slot from the right (the middle plastic slot), it connects to the separately ordered memory module for data transfer. The indicator is normally off, illuminating only upon a fault, typically requiring module replacement. When replacing the module, set the mode select switch to "PROG" and monitor diagnostic indicators afterward. The module is secured to the processor chassis with two thumbscrews.
Is Your Device Showing These Signs?
The Allen Bradley 1772-LI analog input module commonly experiences issues such as signal drift, calibration errors, and inaccurate readings due to component aging or environmental factors. Resolve these problems by recalibrating the module, replacing faulty components like operational amplifiers or analog-to-digital converters, and ensuring proper grounding to mitigate noise interference. Backplane connectivity issues and power supply fluctuations also contribute to module malfunction; inspect and rectify these to ensure stable and accurate analog signal processing. Address firmware corruption through a reflash procedure using compatible programming software to restore proper module operation.
Technical specifications
The Allen-Bradley 1772-LI Processor Control Module for the PLC-2/20 provides control and interfacing. It has a "PROC FAULT" indicator that lights up upon processor malfunction, signaling the need for replacement. It resides in the middle slot and connects to a separate memory module. Replacement requires setting the mode switch to "PROG" and monitoring diagnostics. It's secured with two thumbscrews.
Our Repair Process for the
1772-LI
Our repair process for the Allen Bradley 1772-LI analog input module begins with a thorough assessment to pinpoint signal drift, calibration errors, or inaccurate readings. Technicians recalibrate the module to factory specifications, replace any faulty components, including operational amplifiers and analog-to-digital converters, and verify proper grounding to eliminate noise interference. Backplane connectivity and power supply stability are inspected and corrected to guarantee consistent analog signal processing. In cases of firmware corruption, the module is reflashed using compatible programming software to restore proper operation.
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
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Ships from Rochester, NY