Vacon 100 Industrial Applications Manual page 201

PARAMETER DESCRIPTIONS
Fig. 21: The Load drooping function
A. Load Drooping Time (ID 656)
B. Output Frequency
P3.1.2.8 LOAD DROOPING TIME (ID 656)
Use this parameter to set the drooping time of the motor.
Use load drooping to get a dynamic speed drooping when the load changes. This parameter
gives the time during which the speed is restored 63% of the change.
P3.1.2.9 LOAD DROOPING MODE (ID 1534)
Use this parameter to set the load drooping mode.
Selection
Selection name
number
0
1 Linear removal
P3.1.2.10 OVERVOLTAGE CONTROL (ID 607)
Use this parameter to set the overvoltage controller out of operation.
The function is necessary when
the supply voltage changes, for example, between -15% and +10%, and
•
the process you control does not have the tolerance for the changes that the
•
undervoltage controller and the overvoltage controller make to the output frequency of
the drive.
The overvoltage controller increases the output frequency of the drive
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A
C
The load drooping factor is constant through the frequency
Normal
range.
The load drooping is removed linearly from the nominal fre-
quency to zero frequency.
B
C. Torque
Description
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