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What can prevent the drive tripping on input phase fault?

The drive does not trip when an input phase is removed.

Product Line:
Altivar Drives

All models and serial numbers

1.  Parameter IPL is set to no
2.  Input phase loss works by detecting the ripple in the dc bus. If the load is not high enough, it can't detect an input phase fault. 

1. Set Parameter IPL to yes
2. Provide additional motor load.

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