Product Description
The Allen-Bradley 1771-OWK is a conformal-coated Selectable Contact Output Module with eight isolated outputs, arranged in four groups of two with individual commons. Designed for harsh environments requiring humidity and contaminant protection, it's an ideal replacement for the standard 1771-OW. Its open contact relays prevent leakage currents, and each output is configurable. The module requires 700mA to operate and supports 24-138V AC (resistive) or 24-25V DC. Each output handles up to 0.25A at 120V AC/DC or 1A at 30V AC/DC, with a typical 5ms operate/release time, a 10Hz maximum switching frequency, and 1ms bounce time. Outputs are factory-set to normally-open but can be reconfigured to normally-closed. Use a 1771-WD field wiring arm for connections and key the I/O chassis between pins 6/8 and 16/18 to accept the module.
Is Your Device Showing These Signs?
The Allen Bradley 1771-OWK output module commonly experiences issues such as blown output fuses due to overcurrent conditions from inductive load switching or short circuits in field wiring. Technicians address failures by inspecting and replacing faulty fuses, verifying proper field wiring practices to eliminate shorts, and ensuring adequate suppression diodes are installed for inductive loads to prevent voltage transients. Module failures also stem from component degradation on the PCB, requiring troubleshooting with a multimeter to identify defective transistors, resistors, or capacitors. Backplane connectivity issues arise from corrosion or damage to the module's connector pins, necessitating cleaning or replacement of the connector or the entire module to restore proper communication with the PLC chassis.
Technical specifications
The Allen-Bradley 1771-OWK is a ruggedized, conformal-coated output module with eight isolated, configurable outputs arranged in groups of two. It's designed for harsh environments and replaces the 1771-OW. It features open contact relays, supports various AC/DC voltages and currents, and has a typical 5ms operate/release time. Outputs are factory set to normally-open but can be reconfigured. It requires a 1771-WD wiring arm and specific I/O chassis keying.
Our Repair Process for the
1771-OWK
Our repair process for the Allen Bradley 1771-OWK output module begins with a thorough inspection of output fuses, replacing any that are blown and verifying field wiring to eliminate short circuits. Technicians ensure proper suppression diodes are installed for all inductive loads. If fuse issues are not the cause, component-level troubleshooting is performed using a multimeter to identify and replace defective transistors, resistors, or capacitors on the PCB. Backplane connectivity is then assessed, with connector pins cleaned or replaced to eliminate corrosion or damage. If cleaning or replacement does not restore communication, the entire module is replaced to guarantee proper operation within the PLC chassis.
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.