Posted 17 January 2006 - 04:52 AM
Posted 17 January 2006 - 08:03 PM
Welcome to the forum.
As I understand your post, it appears that the motor runs fine at close to full speed and close to full load, but stalls when under load at near half speed.
What current are you drawing at half speed before the motor begins to stall? At half speed, the motor can only deliver half power. The maximum current remains the same as at full speed.
Is this a v/f drive or a vector drive? do you have a field weakening option turned on as can be used for pumps etc?
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