Product Description
The Allen-Bradley PowerFlex 700 drive, model 20BD248A3ANNACC0, is a size 6, 480VAC, 248 Amp, 3-phase drive with a Type 1/IP20 conformal-coated enclosure and 24V I/O vector control. It lacks a brake resistor and drive-mounted IGBT, and uses a ControlNet communication module without feedback. This module facilitates integration and status reporting. The drive features easily visible LED status indicators and a removable HMI with a backlit LCD displaying 7 lines of 21 characters, supporting multiple languages, numeric keypad input, and displaying operating conditions, alarms, and faults.
Is Your Device Showing These Signs?
The Allen Bradley 20BD248A3ANNACC0 PowerFlex 755 AC drive commonly experiences issues related to IGBT failures, DC bus capacitor degradation, and encoder feedback malfunctions. Resolving these problems involves replacing faulty IGBT modules, performing preventative maintenance on the DC bus capacitors to mitigate ESR increases, and troubleshooting encoder wiring or replacing the encoder to restore accurate motor speed and position control. Parameter corruption within the drive's memory also occurs, necessitating a firmware reload and parameter reconfiguration to factory settings or a known good configuration. Communication faults on the EtherNet/IP network are addressed through network diagnostics, cable replacement, or updating the drive's communication module firmware.
Technical specifications
The Allen-Bradley PowerFlex 700 drive (20BD248A3ANNACC0) is a 480VAC, 248A, 3-phase, size 6 drive with a Type 1/IP20 conformal-coated enclosure and 24V I/O vector control. It's designed for ControlNet communication (no feedback), lacks a brake resistor and drive-mounted IGBT, and includes a removable HMI with a backlit LCD for displaying status, alarms, and faults in multiple languages.
Our Repair Process for the
20BD248A3ANNACC0
Our repair process for the Allen Bradley 20BD248A3ANNACC0 PowerFlex 755 AC drive begins with a comprehensive diagnostic assessment to pinpoint the root cause of the malfunction. For IGBT failures, we replace the defective IGBT modules with new, high-quality components. To address DC bus capacitor degradation, we execute preventative maintenance, which includes capacitor replacement to prevent ESR increases. Encoder feedback malfunctions are resolved through meticulous troubleshooting of encoder wiring or complete encoder replacement to ensure precise motor control. Parameter corruption requires a complete firmware reload and parameter reconfiguration to either factory settings or a verified good configuration. Communication faults on the EtherNet/IP network are rectified through rigorous network diagnostics, cable replacement, or updating the drive's communication module firmware.
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