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Product Description
The Allen-Bradley 1791D-0B8P is a compact DC block I/O module from the 1791D series, featuring 8 outputs and no inputs. It can be expanded in two ways: either to 24 outputs and 0 inputs, or to 8 outputs and 16 inputs, both consuming 3 output bytes and 1 input byte (the latter scheme potentially increasing DeviceNet current to 200mA at 11-25V DC). The module includes a power supply, DeviceNet I/O adapter, and I/O circuit, operating on 10-30V DC and offering output short-circuit protection. Its I/O block design allows for sensor/actuator proximity, reducing wiring costs and installation time. The 1791D-0B8P is certified with CE, UL, UL hazardous class I, C-UL, and C-UL hazardous class I, and its enclosure meets IEC IP20 standards.
Is Your Device Showing These Signs?
The Allen Bradley 1791D-0B8P I/O block commonly experiences failures related to power supply degradation, resulting in intermittent communication errors on the DeviceNet network. Field technicians often address issues stemming from connector pin corrosion, leading to signal degradation and network faults. Resolving software configuration conflicts within the PLC program, particularly concerning I/O mapping and node addressing, is a frequent corrective action. Replacing damaged or improperly terminated DeviceNet cabling is essential for restoring network integrity. Internal component failures within the module necessitate repair or replacement to ensure proper functionality and prevent system downtime.
Technical specifications
The Allen-Bradley 1791D-0B8P is a compact DC block I/O module with 8 outputs and no inputs, expandable to either 24 outputs/0 inputs or 8 outputs/16 inputs. It includes a power supply, DeviceNet adapter, and I/O circuit, operating on 10-30V DC with output short-circuit protection. Its block design facilitates sensor/actuator proximity, saving on wiring. It's certified with CE, UL, C-UL, and meets IEC IP20 enclosure standards.
Our Repair Process for the
1791D-0B8P
Our repair process for the Allen Bradley 1791D-0B8P I/O block begins with a thorough assessment of power supply functionality to identify degradation issues causing communication errors. Technicians meticulously inspect and clean connector pins to eliminate corrosion that compromises signal integrity and induces network faults. Software configurations within the PLC program are examined and corrected to resolve I/O mapping and node addressing conflicts. DeviceNet cabling is replaced when damage or improper termination is detected. Internal component failures require immediate repair or module replacement to guarantee operational integrity and minimize system downtime.
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
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY