Product Description
The Schneider TM3DQ8RG is a high-performance, eight-channel digital output module designed for Modicon M221 PLCs. This module provides a reliable interface for controlling actuators, valves, and other discrete devices in industrial automation applications. It features relay outputs with a robust switching capacity, ensuring dependable operation in demanding environments. The TM3DQ8RG supports a wide range of voltage levels and offers built-in diagnostics for simplified troubleshooting and maintenance. Its compact design and seamless integration with the Modicon M221 series guarantee efficient system configuration and optimized performance. This module is a dependable solution for precise and consistent digital output control.
Is Your Device Showing These Signs?
The Schneider TM3DQ8RG discrete output module commonly experiences field wiring issues, requiring inspection and correction of terminal block connections. Overcurrent conditions stemming from connected inductive loads or short circuits damage the output transistors, necessitating module replacement. Communication failures with the PLC backplane arise from corrupted firmware or hardware faults within the module's internal circuitry, mandating firmware reflashing or hardware repair. Power supply fluctuations or inadequate grounding introduce noise, causing erratic output behavior, which requires power supply stabilization and proper grounding implementation. Finally, environmental factors such as excessive heat or humidity accelerate component degradation, leading to premature module failure, thus environmental control measures are crucial.
Technical specifications
The Schneider TM3DQ8RG is a high-performance, 24 VDC solid-state output module designed for Modicon M221 and M241 PLCs. This module features eight discrete outputs, each capable of switching up to 0.5A with a response time of less than 1 ms, ensuring rapid and precise control of actuators and other field devices. Integrated diagnostics include short-circuit and overload detection on each channel, providing robust protection and minimizing downtime. The TM3DQ8RG utilizes a removable screw terminal block for secure and straightforward wiring, and it conforms to industry standards for EMC and safety, guaranteeing reliable operation in demanding industrial environments. It seamlessly integrates into the PLC system via the TM3 bus, facilitating easy configuration and programming through SoMachine Basic or SoMachine programming software.
Our Repair Process for the
TM3DQ8RG
Our repair process for the Schneider TM3DQ8RG discrete output module begins with a thorough inspection and correction of terminal block connections to resolve field wiring issues. Overcurrent conditions necessitate complete module replacement due to damaged output transistors. Communication failures are addressed through firmware reflashing, and if unsuccessful, hardware repair is initiated. Erratic output behavior requires immediate power supply stabilization and implementation of proper grounding techniques. To combat environmental factors, implement environmental control measures to prevent premature module failure.
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.

















