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Product Description
The Allen-Bradley 1756-OA8 is a ControlLogix digital AC output module with eight channels, divided into two isolated groups of four. It operates from 74 to 265 VAC (47-63 Hz), driving loads like solenoids and motors, and requires an external fuse for protection. Each channel can handle 2 Amps at 60C with a 20 Amp surge capacity. The module is compatible with 1756-TBNH and 1756-TBSH RTBs for easy wiring and replacement, and can be used in local or remote ControlLogix chassis with any ControlLogix processor or communication module. Its backplane power rating is 1.07 Watts, with a 9.3-11 ms output delay.
Is Your Device Showing These Signs?
The Allen Bradley 1756-OA8 output module commonly experiences issues such as blown output fuses due to overcurrent conditions from connected field devices, leading to module faults and process downtime. Troubleshooting includes verifying field wiring for shorts, checking the load current against the module's specifications, and replacing any blown fuses with the correct amperage rating. Backplane communication errors also occur, necessitating inspection of the ControlLogix chassis, power supply, and proper module seating. Firmware corruption is a potential problem, requiring a firmware upgrade or re-flash using ControlFlash software to restore proper functionality.
Technical specifications
The Allen-Bradley 1756-OA8 is a ControlLogix AC output module featuring eight channels in two isolated groups of four. It operates on 74-265 VAC and drives AC loads like solenoids and motors, requiring an external fuse. Each channel handles 2A at 60C with a 20A surge capacity. It's compatible with 1756-TBNH/TBSH RTBs for simplified wiring and works in local or remote ControlLogix chassis with any ControlLogix processor. It has a 1.07W backplane power rating and a 9.3-11 ms output delay.
Our Repair Process for the
1756-OA8
Our repair process for the Allen Bradley 1756-OA8 output module begins with a thorough inspection of field wiring to identify and correct any shorts or overcurrent conditions. The load current is verified against the module's specifications, and any blown fuses are replaced with fuses of the correct amperage rating. The ControlLogix chassis, power supply, and module seating are inspected to resolve backplane communication errors. If firmware corruption is suspected, a firmware upgrade or re-flash is performed using ControlFlash software to restore proper functionality.
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.
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Ships from Rochester, NY