Issue:
PHbd fault on the ATS22 soft starter.
Product Line:
Altistart ATS22
Environment:
All
Cause:
PHbd is a phase imbalance fault.
Resolution:
The ATS22 monitors the current draw through each phase. The ATS22 faults PHbd when the current unbalance exceeds the unbalance threshold and time delay. Unbalance is calculated (Imax - Imin) / Imax.
Troubleshooting steps:
1. Check line voltage (phase-phase). An unbalanced voltage results in imbalanced current.
2. In the PRO Menu, check the following parameters:
Ubd - Unbalance threshold. A larger value is more tolerant of current imbalance. This setting can be set to OFF, disabling the feature.
Ubt - Unbalance time delay. Time that the imbalance needs to be maintained before the ATS22 will trip.
3. With Ubd = OFF, run the motor and check the current draw on each phase. If the current is not balanced and the voltage is balanced, problem is related to the motor. If both are balanced, then the problem could be related to the soft start.
Gepubliceerd voor: Schneider Electric Belgium
Hulp nodig?
Selecteer zelf het juiste product
Vind snel en eenvoudig de juiste producten en toebehoren voor uw toepassingen.
Offerte aanvragen
Dien uw aanvraag online in en een expert zal contact met u opnemen.
Verkooppunten
Vind eenvoudig de dichtstbijzijnde distributeur van Schneider Electric op uw locatie.
Help Center
Vind de antwoorden die u nodig heeft via bladeren door veelgestelde vragen over onderwerpen.
