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In order to quickly magnetize the motor, reduce the pre-excitation time (07-14) and set the pre-excitation level
(07-15) to a high level.
If 07-15 is set greater than 100%, providing a high excitation current during the pre-excitation time (07-14),
motor’s magnetization time is shorted. When the setting reaches 200%, magnetization is reduced by roughly half.
A high pre-excitation level (07-15) might result in excessive motor sound during pre-excitation.
When the flux reaches 100%, pre-excitation current reverts back to 100% and pre-excitation is completed.
Figure 4.4.62 Pre-excitation operation
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