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21/28 BCN-C22005-675
4 Break point setting for droop control (Pr.994, Pr.995)
Set Pr.994 and Pr.995 to have a break point on a droop compensation frequency line. Setting a break point
allows the inverter to raise the droop compensation frequency for light-load (no load) operation without
raising it for heavy-load operation.
Parameter
Number
Name
Initial
Value
Setting Range Description
994 Droop break point gain
9999
0.1 to 100%
Set the changing droop amount as a percentage
value of the rated motor frequency.
9999 No function
995 Droop break point torque
100% 0.1 to 100%
Set the torque where the droop amount is
changed.
CAUTION
The droop break point function is disabled when any of the following conditions is met. (Linear compensation by Pr.286 is
performed.)
Pr.995 = "100% (initial value)"
Pr.286 < Pr.994
Pr.994 Pr.995 Pr.286 / 100%
Magnetic fluxMagnetic fluxMagnetic flux
Sensorless
Sensorless
Sensorless
VectorVectorVector
Torque100%
Droop gain
(Pr.286)
-100%
Frequency
0
Rated frequency
Increased amount of the
droop compensation
frequency
Droop compensation
frequency
Droop break point torque
(Pr.995)
Droop break point gain
(Pr.994)
bcnc22005635.fm 21 ページ ２０１４年１２月１１日 木曜日 午後５時５９分