UV1
Undervoltage Fault
Yaskawa · F7 Drive Programming
What does UV1 mean?
The UV1 fault occurs when the drive detects a loss of AC input power or when the DC bus voltage drops below the set undervoltage trip level, defined by parameter L2-05. This typically affects the power supply circuit within the drive. If not addressed, the drive cannot operate reliably and will shut down, potentially disrupting the entire controlled process.