Allen Bradley Powerflex 755 Fault Codes
Allen-Bradley – PowerFlex 755 VFD (No substitutions) 2.02 VARIABLE FREQUENCY DRIVE UNIT A. Certifications a) Listed to UL508C and CAN/CSA-C22.2 No. Fault Memory a) The last 32 fault codes shall be stored and time stamped in a fault buffer. B) Information about the drive’s condition at the time of the last fault such.
Problems and Solutions for Allen-Bradley PowerFlex Drives Contamination/Corrosion Disconnect power and remove contamination (metal shavings, dust) with compressed dry air. The Allen-Bradley Powerflex drive should be if it’s soaked with oil or other liquid contaminants. Loose connections Electronics are limited to their wiring.
Vibrations, physical manipulation or relocation may loosen terminal connections. Verify and secure all terminal connections.
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- Application Note: PowerFlex 400 Fault Codes Version 001 29 Jun 2016 PowerFlex 400 Fault Codes If a FAULT has occurred, and you are at the TELEMETRY USER INTERFACE: 1. Note the FAULT CODE in the TELEMETRY USER INTEFACE 2. Address the condition that caused the FAULT. See Table Below For List of Fault Codes and Descriptions.
Missing power phase Check input voltage and verify power is on all phases. Bad cables Over time and after constant use, cables will wear out from physical damage and contamination. If you have haven’t swapped out your cables in a while, secure a new cable and try again. Seized cooling fans Overheating is the biggest enemy to electronic circuitry.
Proper ventialtion requires that fans have been cleaned and devoid of any debris. Wrong parameters This issue can occur when system memory leaks due to voltage transients and the values change. Backup the parameters using the HIM and reset the drive to factory default, then restore the correct parameters.
Allen Bradley Powerflex 755 Fault Codes Manual
Binded load This will usually cause an overcurrent fault. Check gear, fans, pulleys or worm gears for proper operation. Allen-Bradley PowerFlex Drives Alarm Numbers and Descriptions.