The answer to your question depends upon the specific input voltage operating range for the drive.
Drives are normally rated to operate within a specific voltage range.
If drive is rated to operate with input voltage in range of 600 VAC to 690 VAC then the 600 VAC transformer output voltage would be acceptable for drive itself.
However, due to the 600 VAC input you may not be able to achieve the maximum amount of power out of drive to motor to perform application (i.e. due to the lower input voltage the output voltage to motor will be lower and more current will be needed through motor to perform application).