Inovance F69 fault code meaning

Inovance / F69

Series: HD5X

Unit undervoltage fault

AC drive

Meaning: Unit DC bus voltage is below the unit undervoltage threshold

Possible causes

1.Mains input voltage low
2.Input transformer fault
3.Unit control board error

Source: HD5X Series High-Voltage AC Drive User Manual P122

Series: HD90P

Unit undervoltage fault 2. Input transformer fault

AC drive

Meaning:

Possible causes

Source: HD90P Series High-Voltage Variable-Frequency Power Supply User Manual P116

Series: HD90T, HD9X, HD9XS

Unit undervoltage fault

AC drive

Meaning:

Possible causes

Source: HD90T Series High-Voltage AC Drive User Manual P154; HD9X High-Voltage AC Drive User Manual P171; HD9XS Series High-Voltage AC Drive User Manual (Neutral) P188