Q : What's the function of GD20-09 frequency reduction with voltage?

Views : 2
2022-08-11

A: When DC bus voltage reduce, VFD reduce the output frequency to ensure the output torque. P27.02=1 active protection, if DC bus voltage is less than P27.03*513VDC, reduce the output f. f/hz=rated Hz*Current DC bus voltage/rated DC bus voltage.

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