First time on this forum. Seems like an informative and useful site. I have an HY02D211B VFD and am using the potentiometer to control speed. At full speed it is only indicating 207.6 hertz and I believe it should be at 400HZ for 24000RPM. I may be completely off on this. PD 003-005 are set to 400HZ. Can you direct me?