INVT GD20 Series, GD20-EU Series, GD20-UL Series & GD20-LA Series Drive
1
Posts
1
Users
0
Reactions
188
Views
Apr 13, 2024 9:18 am
Cause : Input phase loss comes when input R,S,T have phase loss or imbalance. An Input Phase Loss "SP1" fault will occur when the DC bus ripple exceeds a pre-defined level. One (or more) of the input phases were lost.
- Large imbalance of voltage exists on the input of the drive.
- Drive is not properly sized for single phase input.
- Check input voltage.
- Check rectifier section using multimeter.
