Undervoltage

What does 8 mean?

The DC bus voltage is lower than the inverter’s 'Undervoltage limit'. The inverter will switch off until VDC recovers, but if it remains low for 1-3 seconds, it will trip with an alarm. This indicates that the incoming supply voltage is too low or unstable, potentially affecting drive operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect input power wiring and connections for any loose terminals or excessive voltage drops under load.