Mitsubishi Electric QD77MS User Manual page 145

Chapter 4 Synchronous Control
[Pr.436] Speed change ratio: Numerator, [Pr.437] Speed change ratio: Denominator
Set the numerator and the denominator for the speed change ratio.
"[Pr.436] Speed change ratio: Numerator" and "[Pr.437] Speed change ratio: Denominator"
can be changed during synchronous control.
Input values for speed change are processed as follows.
Speed change ratio: Numerator
Pr.436
Input value after change = Input value before change
Speed change ratio: Denominator
Pr.437
The input speed can be reversed by setting a negative value in "[Pr.436] Speed change
ratio: Numerator".
"[Pr.437] Speed change ratio: Denominator" is set within the range from 1 to 2147483647.
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