Product Description
The Allen-Bradley 1771-DLC gray encoder input module converts gray code to binary, requiring a 12-24V DC power supply. This 3cm x 15cm x 25cm, 1.3kg module operates between 0-60C (storage: -40-85C, 5-95% non-condensing humidity). It draws 120mA from the power supply for overload protection and sinks 6mA (12V DC) or 15mA (24V DC) per gray code input. Power should be centrally connected to both encoder and module. Use Belden 9556 shielded cable (max 50ft, single ground) to connect the encoder to the module's wiring arm. Keying bands are needed between pins 4/6 and 24/26 for correct module placement. Logic states are 10-27V DC (Logic 1) and 0-2V DC (Logic 0), with a digital resolution of 1/256. Prevent electrostatic discharge by avoiding contact with connectors/components and ensuring a static-free environment, including grounding yourself before handling.
Is Your Device Showing These Signs?
The Allen Bradley 1771-DLC commonly experiences issues related to backplane communication failures, manifesting as I/O errors and PLC downtime. Resolve these by inspecting the data highway cable for proper termination and continuity. Address module failures due to component degradation by replacing capacitors and integrated circuits on the board. Correct corrupted memory by clearing and reloading the PLC program. Overcome power supply problems by verifying voltage levels and replacing faulty power components. Ensure proper grounding to mitigate electrical noise interference that disrupts communication.
Technical specifications
The Allen-Bradley 1771-DLC encoder input module converts gray code to binary, needing a 12-24V DC power supply. It's a 3cm x 15cm x 25cm, 1.3kg module operating in 0-60C (storage: -40-85C) with 5-95% non-condensing humidity. It draws 120mA and sinks 6mA/15mA per input (12V/24V DC). Power should be centrally connected, and Belden 9556 shielded cable (max 50ft, single ground) is used for encoder connection. Keying bands are required for proper placement. Logic states are 10-27V DC (Logic 1) and 0-2V DC (Logic 0), with 1/256 resolution. ESD prevention is crucial during handling.
Our Repair Process for the
1771-DLC
Our repair process for the Allen Bradley 1771-DLC begins with a thorough inspection of the data highway cable to confirm proper termination and continuity, addressing backplane communication failures. Module failures stemming from component degradation are resolved through the replacement of capacitors and integrated circuits directly on the board. Corrupted memory is corrected by clearing and reloading the PLC program. Power supply problems are overcome by verifying voltage levels and replacing any faulty power components. Finally, proper grounding is established to mitigate electrical noise interference that disrupts communication.
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.