DC under voltage

What does WARNING/ALARM 8 mean?

The DC-link voltage has dropped below the undervoltage limit. This typically indicates an insufficient or fluctuating supply voltage to the frequency converter, leading to a drive trip after a fixed time delay, which varies by unit size. Continued operation with low voltage can cause instability.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the integrity of the power supply wiring and connections to the drive's input terminals.