Issue:
Will an S-Flex work with a motor that has a rating less than the S-Flex rating?

Product Line:
S-Flex, Altivar Machine, ATV212 SFlex

Cause:
Smaller motor size versus the S-Flex rating.

Resolution:
It may be possible.  The drive HP and amperage rating are a maximum rating, therefore the motor rating must be less than or equal to the S-Flex rating.  The limitation is the motor must be at no less than 25% of the drive amperage rating but it is not generally recommended not to use a motor less than 50% of the drive rating.

Programming the ATV212 with the motor nameplate information, motor thermal current and current limitation will provide motor overload protection.

If the S-Flex has the full voltage bypass option (mod 'Y') then the overload relay amperage range may not cover the motor FLA.  For proper overload protection in Bypass mode, the overload relay may need to be replaced with an appropriate model.  Consult the S-Flex manual document 30072-451-83 and the online Digest to confirm ratings or contact the Drive Products Support Group for additional assistance.

Catalog number example:  SFD212CG4YB07D07:  SFD212 - S-Flex 212, C - 1HP, G - NEMA 1, 4 - 480VAC, Y - with Bypass

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 at drive.products.support@se.com to create a case with our Technical Support Team.

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Released for: Schneider Electric USA