How can an ATS46 or ATS48 be used with an undersized motor or no motor?
Issue:
ATS46 or ATS48 using an undersized motor or not using motor.
Resolution:
A minimum load current is required for SCR conduction. Starter will trip on PHF (Phase Fault) if the motor current draw is less than 10% of the nominal motor current (adjustable down to 5% on ATS48).
A very small motor or motor loads that can not pull adequate current and may require a smaller soft starter.
For testing purposes only, the SST parameter can be turned on under Level 3 parameters(drC menu on ATS48). This SST mode will automatically reset to "NO" when power is cycled.
SST will NOT allow the soft starter to operate with no motor.
If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions:
Frequently Asked Questions - Schneider Electric (se.com)
If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us atdrive.products.support@se.comto create a case with our Technical Support Team.
If you are not located in North America, please contact your local Customer Care Center for assistance:
Support | Schneider Electric Global (se.com)
Released for: Schneider Electric USA
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