Fault Codes and No Communication11/23/2016We recently repaired an Allen Bradley PowerFlex AC drive for a customer that reported “The drive does not initialize on start-up.” This was a model 20AD040A0AYNANC0 PowerFlex 70 drive that has an input voltage of 480VAC and has a rated output of 480VAC 25 horsepower and 25 amps.Upon initial evaluation we found that the drive would power up but it would give a fault code of F999 and another fault code of F14. The faults would not clear and there was no communication. The drive could not be read from or written to or monitored for current status.It is standard practice to completely refurbish the power supply and control boards of the PowerFlex drives during the course of the repair. Once the control board was refurbished the faults cleared but communication with the drive was still not possible. After more troubleshooting, it was determined that the control board was the cause and was at the point where no further repairs could be performed on that particular board. Control board replacement was the only option. When Precision Electronic Services, Inc. preforms drive repairs, we are typically able to retain customer’s parameters that are particular to a process or application. Since on this particular repair job, the control board was bad and had no communication or way to save the parameters other than to record them by hand, they could not be saved by any software to be reloaded at a later time. Once we obtained a replacement control board, it was installed on the drive. Other repairs that were also completed included replacing a damaged internal choke as well as the cooling fans.At that point, all necessary repairs had been completed and it was ready to begin testing. The factory default parameters were modified to be able to fully load test the drive on our custom engineered load test center. Once all load testing was completed and the drive was verified to be fully functional, the customer’s application specific parameters were reinstalled so that when the drive was received at their facility, it could be bolted back into the machine, re-wired as it was before, and started up without any additional steps necessary.PES repairs the entire Allen Bradley PowerFlex line of drives from Rockwell Automation. In addition to the 70 series drive described in the case here, we also have extensive experience with other PowerFlex drives from Rockwell’s Architecture line including the PowerFlex 753, 755, 700, 700S, 700H, and 700L series. We also repair the smaller drives from their Compact line such as the PowerFlex 4, 4M, 40, 40P, 400, 523, 525, and 527 series. Call us today at 800-732-4695. Back To Blog
Fault Codes and No Communication11/23/2016We recently repaired an Allen Bradley PowerFlex AC drive for a customer that reported “The drive does not initialize on start-up.” This was a model 20AD040A0AYNANC0 PowerFlex 70 drive that has an input voltage of 480VAC and has a rated output of 480VAC 25 horsepower and 25 amps.Upon initial evaluation we found that the drive would power up but it would give a fault code of F999 and another fault code of F14. The faults would not clear and there was no communication. The drive could not be read from or written to or monitored for current status.It is standard practice to completely refurbish the power supply and control boards of the PowerFlex drives during the course of the repair. Once the control board was refurbished the faults cleared but communication with the drive was still not possible. After more troubleshooting, it was determined that the control board was the cause and was at the point where no further repairs could be performed on that particular board. Control board replacement was the only option. When Precision Electronic Services, Inc. preforms drive repairs, we are typically able to retain customer’s parameters that are particular to a process or application. Since on this particular repair job, the control board was bad and had no communication or way to save the parameters other than to record them by hand, they could not be saved by any software to be reloaded at a later time. Once we obtained a replacement control board, it was installed on the drive. Other repairs that were also completed included replacing a damaged internal choke as well as the cooling fans.At that point, all necessary repairs had been completed and it was ready to begin testing. The factory default parameters were modified to be able to fully load test the drive on our custom engineered load test center. Once all load testing was completed and the drive was verified to be fully functional, the customer’s application specific parameters were reinstalled so that when the drive was received at their facility, it could be bolted back into the machine, re-wired as it was before, and started up without any additional steps necessary.PES repairs the entire Allen Bradley PowerFlex line of drives from Rockwell Automation. In addition to the 70 series drive described in the case here, we also have extensive experience with other PowerFlex drives from Rockwell’s Architecture line including the PowerFlex 753, 755, 700, 700S, 700H, and 700L series. We also repair the smaller drives from their Compact line such as the PowerFlex 4, 4M, 40, 40P, 400, 523, 525, and 527 series. Call us today at 800-732-4695.