Product Description
The Mitsubishi QX21L, an AC input module for the Melsec-Q series, manages up to 32 input points with a 200-240V AC operating range (220V AC at 60Hz), a 10mA current rating, and a 25ms response time, using a single common 32-point configuration and requiring a separate 38-point terminal block. Suitable for indoor use between -10C and 55C, it features screw terminals for easy installation, replaces the AX21, and complies with LR, NK, DNV, ABS, RINA, and BV standards.
Is Your Device Showing These Signs?
Mitsubishi QX21L discrete output module failures commonly stem from blown output fuses due to overcurrent events caused by inductive load switching or short circuits in connected field devices. Troubleshooting includes verifying proper field wiring, replacing damaged fuses with the correct amperage rating, and inspecting the module's transistors for damage using a multimeter. Address grounding issues to mitigate electrical noise and prevent spurious signals. Confirm the PLC backplane voltage is within the specified range to ensure proper module operation.
Technical specifications
The Mitsubishi QX21L is a Melsec-Q series AC input module handling 32 points (200-240V AC), with 10mA current, 25ms response, single common 32-point configuration, and requiring a 38-point terminal block. It's for indoor use (-10C to 55C), has screw terminals, replaces the AX21, and meets LR, NK, DNV, ABS, RINA, and BV standards.
Our Repair Process for the
QX21L
Our repair process for Mitsubishi QX21L discrete output module failures begins with a thorough verification of field wiring to ensure correct connections and identify potential short circuits. Blown output fuses are replaced with fuses of the exact amperage rating as specified by the manufacturer. Transistors within the module are meticulously inspected for damage using a multimeter, and any faulty components are replaced. Grounding issues are addressed to eliminate electrical noise and prevent unintended signal activation. The PLC backplane voltage is confirmed to be within the manufacturer's specified range to guarantee proper module operation.
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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