YASKAWA Varispeed V7 Instruction Manual page 178

Voltage fluctuation
Search Operation Power Detection Hold Width (n161)
When the power fluctuation is less than this value, the output voltage is
held for 3 seconds, and then, the search operating mode is started. Set
the hold width as a percentage of the power that is currently held.
Constant
No.
n161 Search Operation
Power Detection Hold
Time Constant of Power Detection Filter (n162)
Response at load changes is improved when this value is small.
At low frequency, however, unstable rotation will result.
Constant
No.
n162 Time Constant of Power
Detection Filter
Name
Width
Name
7. Programming Features
Output voltage
Unit Setting
Range
% 0 to 100
Unit Setting
Range
×4
0 to 255
ms
Factory
Setting
10
Factory
Setting
5
(20 ms)
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