Product Description
The Allen Bradley (Rockwell Automation) 1791-IOVW is a compact I/O module block integrating an adapter, power supply, I/O module, and I/O rack. It features 32 sourcing inputs, 32 sinking outputs, programmable control interface, signal conditioning, and I/O connections. LED indicators display Fuse, Active, Communication, Power, and I/O status. Connections are made via two 37-pin removable terminal blocks for remote I/O, plus a separate terminal block for external power (18-26.4V DC recommended). Configuration switches allow setting baud rate, I/O group, last state, last rack, and processor restart lockout. The module dissipates 51.8 BTU/hr (15.1 Watts), measures 156.21 x 17 x 44.7 mm, and requires 14-gauge stranded wire. Operating temperature is 0-60C (storage: -40-85C). Connect outputs to the right terminals and inputs to the left. Use Belden 9463 cable for remote I/O links, wiring blocks in series with a terminator resistor at both ends of the link if it's the last block. The 1791-IOVW is incompatible with the 1747-DSN distributed I/O scanner module.
Is Your Device Showing These Signs?
The Allen Bradley 1791-IOVW is commonly repaired for communication failures stemming from corrupted backplanes or damaged Ethernet ports, resulting in a loss of network connectivity and preventing data exchange with the PLC. I/O module failures are frequent, manifesting as unresponsive input channels or non-operational output points due to component degradation or overvoltage events. Power supply issues also occur, causing intermittent operation or complete module shutdown, often traced to capacitor degradation or regulator malfunction. Addressing these issues restores proper functionality and ensures reliable operation within the automation system.
Technical specifications
The Allen Bradley 1791-IOVW is a compact I/O module block that combines an adapter, power supply, I/O module, and I/O rack. It offers 32 sourcing inputs and 32 sinking outputs, along with programmable control, signal conditioning, and I/O connections. It features LED indicators for status monitoring and configuration switches for various settings. It requires specific wiring and cable types for proper operation and is incompatible with the 1747-DSN scanner module.
Our Repair Process for the
1791-IOVW
Our repair process for the Allen Bradley 1791-IOVW begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the failure, whether it be communication issues, I/O module malfunctions, or power supply problems. Corrupted backplanes and damaged Ethernet ports are meticulously repaired or replaced to re-establish network connectivity. Unresponsive input channels and non-operational output points are addressed through component-level repairs, rectifying degradation and overvoltage damage. Power supply malfunctions are resolved by replacing degraded capacitors and repairing regulator circuits, ensuring stable and consistent power delivery. Rigorous testing follows all repairs to guarantee complete restoration of functionality and reliable operation within the automation system.
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.