Mitsubishi Electric FR-A800 Series Instruction Manual page 740

This is effective in balancing the load when multiple inverters are connected.
Pr.
286
Droop gain
G400
287
Droop filter time constant
G401
288 Droop function activation
G402 selection
994
Droop break point gain
G403
995
Droop break point torque
G404
679
Second droop gain
G420
680 Second droop filter time
G421 constant
681 Second droop function
G422 activation selection
682 Second droop break point
G423 gain
683 Second droop break point
G424 torque
 Droop control
• Droop control is enabled under Advanced magnetic flux vector control, Real sensorless vector control, Vector control, and
PM sensorless vector control.
• In the droop control, the speed command changes depending on the amount of the current for torque.
Set the droop amount at the rated torque in Droop gain as % value of the rated motor frequency (or motor speed when
Pr.288 = "10 or 11").
• The upper limit of the droop compensation frequency is 400 Hz or Pr.1 Maximum frequency, whichever smaller.
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Name Initial value Setting range
0%
0.3 s
0
9999
100%
9999
9999
9999
9999
9999
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0 Normal operation
Droop control enabled.
0.1 to 100% Set the droop amount at the time of rated torque as % value of
the rated motor frequency.
0 to 1 s Set the time constant of the filter relative to the torque current.
No droop control during
0 acceleration/deceleration
(with 0 limit)
Continuous droop control
1
during operation (with 0 limit)
Continuous droop control
2 during operation (without 0
limit)
No droop control during
10 acceleration/deceleration
(with 0 limit)
Continuous droop control
11
during operation (with 0 limit)
No droop control during
20 acceleration/deceleration
(with 0 limit)
Continuous droop control
21
during operation (with 0 limit)
Continuous droop control
22 during operation (without 0
limit)
Set the droop amount to be changed as % value of the rated
0.1 to 100%
motor frequency.
9999 No function
0.1 to 100% Set the torque to change the droop amount.
0 to 100% Refer to Pr.286.
The first droop control setting
9999
is applied.
0 to 1 s Refer to Pr.287.
The first droop control setting
9999
is applied.
0 to 2, 10, 11,
Refer to Pr.288.
20 to 22
The first droop control setting
9999
is applied.
0.1 to 100% Refer to Pr.994.
The first droop control setting
9999
is applied.
0.1 to 100% Refer to Pr.995.
The first droop control setting
9999
is applied.
Description
The Pr.84 setting is the droop
compensation reference.
The motor speed is the droop
compensation reference.
The Pr.1121 setting is the
droop compensation
reference.
Set the second droop control.
The second droop control is
enabled when the RT signal is
ON.
5. PARAMETERS
5.16 (G) Control parameters
1
2
3
4
5
6
7
8
9
10
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