Product Description
The Allen-Bradley 1794-OA8K is a robust, 8-point AC digital output module from the Flex I/O system, designed for demanding industrial applications. It features conformal coating for environmental protection, requires an external AC power supply with a 50A surge current rating, and offers 8 non-isolated output channels rated at 85-120VAC. Each channel supports 5-75mA on-state current (at 35C), with a module maximum of 4A. Key specifications include a maximum 2.25mA leakage current, 1VAC voltage drop at 0.5A, a 7A surge current for 45ms, and a 1/2 cycle signal delay. Power dissipation ranges from 4.1W to 6.3W depending on current. It's easily installed on compatible 1794 terminal bases without rewiring and includes 8 yellow status indicators, T4/T4A temperature codes, and an open enclosure.
Is Your Device Showing These Signs?
The Allen Bradley 1794-OA8K FLEX I/O output module commonly experiences issues such as blown output fuses due to overcurrent or short circuits in field wiring. Technicians frequently address problems with the terminal base unit, including corroded pins or loose connections, leading to intermittent or failed output signals. Incorrect module configuration within the PLC program, specifically incorrect I/O mapping or parameter settings, prevents proper operation. Damaged or degraded internal components, such as the triacs or optocouplers responsible for switching the outputs, cause complete output failure and necessitate module replacement. Noise interference from nearby equipment affects signal integrity, requiring proper grounding and shielding techniques.
Technical specifications
The Allen-Bradley 1794-OA8K is a durable, conformal-coated 8-point AC digital output module for industrial use within the Flex I/O system. It requires an external AC power supply with a 50A surge rating and provides 8 non-isolated 85-120VAC output channels. Each channel supports 5-75mA on-state current, with a module maximum of 4A. Key specs include low leakage current, voltage drop, and a 7A surge capacity. It's easily installed, features status indicators, and has T4/T4A temperature codes.
Our Repair Process for the
1794-OA8K
Our repair process for the Allen Bradley 1794-OA8K FLEX I/O output module begins with a thorough inspection for blown output fuses, which are replaced after identifying and correcting the overcurrent or short circuit in the field wiring. Technicians then meticulously examine the terminal base unit for corroded pins or loose connections, ensuring secure and reliable connectivity. The PLC program configuration is verified to confirm correct I/O mapping and parameter settings, rectifying any discrepancies that impede proper operation. Internal components, including triacs and optocouplers, are tested, and the entire module is replaced if damage or degradation is found. Finally, grounding and shielding are implemented to mitigate noise interference and ensure signal integrity.
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.