Справочник Пользователя для Mitsubishi Electronics FR-A700
20/24
BCN-C22005-634
5
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.
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
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.
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.
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%
performed.)
Pr.995 = "100% (initial value)"
Pr.286 < Pr.994
Pr.994 Pr.995 Pr.286 / 100%
Magnetic flux
Magnetic flux
Magnetic flux Sensorless
Sensorless
Sensorless
Vector
Vector
Vector
P M
P M
P M
Torque
100%
Droop gain
(Pr.286)
(Pr.286)
-100%
Frequency
0
Rated frequency
Increased amount of the
droop compensation
frequency
droop compensation
frequency
Droop compensation
frequency
frequency
Droop break point torque
(Pr.995)
(Pr.995)
Droop break point gain
(Pr.994)
(Pr.994)
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