Product Description
The Allen-Bradley 20-HIM-A3 is a versatile human-machine interface (HMI) module for PowerFlex AC drives, particularly the PowerFlex 700 series. Featuring an LCD screen, full numeric keypad, and options for handheld or drive-mounted use (with a bezel kit), it simplifies monitoring and configuration. Key benefits include easy-to-read displays, a smart start programming feature, and a copycat function for parameter storage. While designed for newer PowerFlex drives like the 7000, 70, 700, 700S, 700L, 753, 755, 755TR, 755TL, and 700H series, it also offers limited backward compatibility with older PowerFlex 7-Class drives. Enhanced keypad touch response and improved menu structures provide a more ergonomic and efficient user experience compared to previous models.
Is Your Device Showing These Signs?
The Allen Bradley 20-HIM-A3 Human Interface Module commonly experiences failures related to backlight degradation, resulting in diminished screen visibility and requiring backlight replacement. Touchscreen unresponsiveness or inaccurate input is a frequent problem, often stemming from damaged touch sensors or calibration issues. Communication errors, specifically failures in serial or Ethernet connectivity, are traced to faulty communication ports or corrupted firmware, necessitating port repair or firmware reflashing. Power supply malfunctions, indicated by intermittent operation or complete failure, are attributed to capacitor degradation or voltage regulator failure, demanding power supply component replacement. Finally, software corruption leads to operational errors and display anomalies, requiring firmware updates or complete software reinstallation to restore proper functionality.
Technical specifications
The Allen-Bradley 20-HIM-A3 is an HMI module for PowerFlex AC drives, primarily the 700 series, offering easy monitoring and configuration via an LCD screen and numeric keypad. It can be handheld or drive-mounted and features smart start programming and a copycat function for parameter storage. While optimized for newer PowerFlex drives, it has some backward compatibility with older 7-Class drives and boasts improved ergonomics compared to previous models.
Our Repair Process for the
20-HIM-A3
Our repair process for the Allen Bradley 20-HIM-A3 Human Interface Module begins with a comprehensive diagnostic evaluation to pinpoint the specific failure. Backlight degradation requires complete backlight replacement to restore screen visibility. Touchscreen unresponsiveness necessitates touch sensor repair or recalibration to ensure accurate input. Communication errors are resolved through communication port repair or firmware reflashing to restore serial or Ethernet connectivity. Power supply malfunctions demand replacement of degraded capacitors or faulty voltage regulators to ensure stable operation. Software corruption is corrected through firmware updates or complete software reinstallation to eliminate operational errors and display anomalies.
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.

















