Forum

SPI fault in INVT d...
 
Share:
Notifications
Clear all

SPI fault in INVT drive

1 Posts
1 Users
0 Reactions
785 Views
Posts: 18126
Admin
Topic starter
(@click2electro)
Member
Joined: 3 years ago

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.

  1. Large imbalance of voltage exists on the input of the drive.
  2. Drive is not properly sized for single phase input.
  3. Check input voltage.
  4. Check rectifier section using multimeter.
Share: