Danfoss VLT FC 360 Drive
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Jan 18, 2024 7:57 am
Warning /Alarm 8 in danfoss VLT FC360 drive: DC undervoltage - If the DC-link voltage drops below the undervoltage limit, the drive checks for 24 V DC back-up supply. If no 24 V DC back-up supply is connected, the drive trips after a fixed time delay. The time delay varies with unit size.
- Check that the supply voltage matches the drive voltage.
- Perform an input voltage test.
- Perform a soft-charge circuit test
