Parker AC690, AC890, AC30, AC10 & Fastpack Drive
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Apr 30, 2025 5:09 am
Cause: AERR APP ERROR comes when the user application program running within the drive has encountered a runtime error.
AERR APP ERROR fault in Parker AC890 drive indicates that the application program (APP) has encountered a runtime execution error — similar to a crash — during operation. This is a serious software fault, typically due to a problem in the Function Block Diagram (FBD) or structured text logic you’ve programmed into the drive.
