Product Description
The Allen-Bradley 1772-LZ is a Mini-PLC-2/02 processor featuring 2K words of RAM, a data table ranging from 48 to 1920 floating words, and typical I/O capacities of 128 total and 128 analog. It offers a program scan time of 7.5 ms/K minimum and 12 ms typical, with I/O scan times of 0.82 ms (2-slot), 2 ms (1-slot), and 2.15 ms (1/2-slot). The processor requires 1.25 A backplane current and operates in 5-95% non-condensing relative humidity. It includes a 15-pin interface, a lithium battery for up to one year of memory retention without AC power, a mode selection key switch, and status indicators. Key features include report generation, data highway interface, full I/O forcing (2-slot addressing), online data change and programming, selectable timed interrupts for recurring subroutines, and both basic and advanced instruction sets. The basic set offers up to 488 timers/counters, data manipulation, three-digit math, relay-like instructions, and program control. The advanced set adds EAF functions like six-digit math, jump instructions, subroutine programming, bit shift registers, sequencer instructions, block transfer instructions, and data-transfer file instructions.
Is Your Device Showing These Signs?
The Allen Bradley 1772-LZ suffers from common failures including memory corruption, often requiring memory module replacement or reprogramming. Backplane communication issues arise due to connector corrosion or damage, necessitating cleaning or replacement. Power supply degradation leads to intermittent operation; inspect and replace capacitors. PLC program corruption occurs from power surges or improper shutdowns, demanding program reloading from backup. Resolve I/O module communication faults through backplane inspection and module reseating.
Technical specifications
The Allen-Bradley 1772-LZ is a Mini-PLC-2/02 processor with 2K RAM, a data table up to 1920 words, and 128 total/analog I/O capacity. It has a program scan time of 7.5-12 ms/K and I/O scan times ranging from 0.82 to 2.15 ms depending on slot configuration. It requires 1.25A backplane current and operates in 5-95% humidity. Features include a 15-pin interface, battery backup for memory, mode selection, status indicators, report generation, data highway interface, full I/O forcing, online programming, timed interrupts, and both basic and advanced instruction sets offering various timer/counter, math, data manipulation, and program control capabilities.
Our Repair Process for the
1772-LZ
Our repair process for the Allen Bradley 1772-LZ begins with a comprehensive diagnostic evaluation to pinpoint the failure. Memory corruption issues are addressed through memory module replacement or reprogramming. Backplane communication faults are resolved by cleaning or replacing corroded or damaged connectors. Power supply degradation is rectified by inspecting and replacing faulty capacitors. PLC program corruption necessitates reloading the program from a verified backup. I/O module communication faults are resolved through thorough backplane inspection and module reseating.
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.