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Old 09-08-2009, 02:14 PM   #41
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I think most modern VFD output abc regardless of input. Knowing the motor leads and terminating them accordingly should give you the correct rotation.
Of course I would still bump test every motor.

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Old 09-09-2009, 12:02 AM   #42
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I realize that this isn't absolute, but every VFD I've ever connected has been ABC on the output while in forward direction.

That doesn't mean that there aren't any CBAs out there, if so, I've yet to see one.

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Old 09-09-2009, 01:59 PM   #43
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Quote:
Originally Posted by electricalperson View Post
can you mark the motor leads ABC, trace each wire out and mark the leads feeding the drive ABC?
Sorry I missed your question. The answer is no. VFD's are not phase sensitive.
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