Product Description
The Allen-Bradley 1791-16A0 is a compact, self-contained Distributed I/O block featuring sixteen 120VAC inputs, an integrated power supply, and a PLC interface. As part of the Block I/O family, it combines the functions of an I/O rack, adapter, power supply, and I/O devices, connecting to a network controller via a daisy-chain configuration for asynchronous I/O scanning. It's compatible with various discrete input devices like switches and proximity sensors. When used with 1771 series output modules, specific voltage and current limitations must be observed for compatibility, with modules like the 1771-OAN and 1771-OD16 being examples of suitable options. The 1791-0A16 can be mounted horizontally or vertically, offering a maximum output rating of 600mA at both 30C and 60C, and a surge current of 10A for 50ms every 2 seconds; a 2-inch (58.0 cm) clearance on all sides is recommended for ventilation during installation.
Is Your Device Showing These Signs?
The Allen Bradley 1791-16A0 I/O block commonly experiences issues such as communication failures stemming from corrupted backplane connectivity or faulty network adapters. Field wiring terminations become loose or corroded, causing signal degradation and intermittent sensor/actuator operation. Internal component degradation, specifically electrolytic capacitor failures within the power supply circuitry, leads to voltage instability and operational faults. Firmware corruption during upgrades necessitates a re-flash, and physical damage to the housing compromises environmental protection, accelerating component failure. Resolve these issues through backplane inspection, proper termination techniques, component-level repair, firmware updates, and enclosure replacement.
Technical specifications
The Allen-Bradley 1791-16A0 is a compact Distributed I/O block with 16 120VAC inputs, a built-in power supply, and a PLC interface. It integrates I/O rack, adapter, power supply, and I/O devices, connecting to a network controller via daisy-chain for asynchronous I/O scanning. It's compatible with discrete input devices and, when used with 1771 series output modules (like 1771-OAN and 1771-OD16), requires adherence to voltage and current limitations. It can be mounted horizontally or vertically, has a 600mA output rating at 30C and 60C, and a 10A surge current. Ventilation clearance of 2 inches is recommended.
Our Repair Process for the
1791-16A0
Our repair process for the Allen Bradley 1791-16A0 I/O block begins with a thorough inspection of the backplane for connectivity issues and a check of the network adapter for faults. Field wiring terminations are examined for looseness or corrosion, and proper termination techniques are applied. Internal components are scrutinized for degradation, with electrolytic capacitors in the power supply circuitry receiving particular attention, and component-level repairs are performed as needed. Firmware is verified and updated to resolve any corruption. Finally, the housing is assessed for physical damage, and a replacement is provided if the enclosure is compromised.
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
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Ships from Rochester, NY