Posted 06 January 2010 - 03:59 PM
Posted 09 January 2010 - 10:04 PM
Welcome to the forum.
The motor should be able to operate to 1150RPM without field weakening.
Because your field voltage is a little on the low side, I would expect the maximum operating speed to be higher than 1150RPM without field weakening.
With the field current reduced to 0.5Amp, the maximum operating speed should be 3450RPM
The reduced field voltage should not have any affect on the maximum speed with field weakening.
If the maximum armature voltage is also reduced from 240V to 220V, this will reduce the operating speeds a little.
When the drive reaches full field weakening, what is the field current? 0.5A DC? What is the armature voltage?
What are you using for speed feedback? If your speed feedback is not scaled correctly, your speed control loop could limit your performance.
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