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Droop (pr. 286 To Pr. 288); Droop Control (pr. 286 To Pr. 288) - Mitsubishi Electric FR-V500 Instruction Manual

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Droop (Pr. 286 to Pr. 288)

3.26 Droop (Pr. 286 to Pr. 288)
3.26.1 Droop control (Pr. 286 to Pr. 288
This function is designed to balance the load in proportion to the load torque to provide the speed drooping
characteristic.
This function is effective for balancing the load when using multiple inverters
The speed command is varied according to the magnitude of the motor load (load meter of the inverter).
The drooping amount at the rated torque is set by the droop gain as a percentage using the rated speed as
a reference.
Droop compensation
speed
Droop control is made valid when Pr. 286 is other than "0".
Parameter
Name
286
Droop gain
Droop filter time
287
constant
Droop function
288
activation selection
Speed limitter after droop compensation
Pr. 288 setting
Droop control is not excercised during acceleration/deceleration. Note that the speed command after
0
droop is stopped at 0r/min if the speed command after droop is negative.
Droop control is always excercised during operation. Note that, during vector control with encoder, the
1
speed command after droop is stopped at 0r/min if the speed command after droop is negative.
Droop control is always excercised during operation. Note that the speed command after droop is not
2
stopped at 0r/min even if the speed command after droop is negative.
-100%
Pr. 342
Refer to Pr. 117 (page 128).
Amount of torque current after
filtering
=
100% torque amount current
Factory
Setting
Setting
Range
%
%
0
0 to 100
0.00 to
0.3s
1.00s
0
1
0
2
Speed
0
)
speed
Rated speed × droop gain
×
The drooping amount at the rated torque is set by the droop gain
as a percentage using the rated speed as a reference.
When the setting value is "0", the function will be invalid.
Set the time constant of the primary delay filter applied to the
torque current.
Droop control is not exercised during acceleration/deceleration.
Droop control is always exercised during operation.
(with zero limit)
Droop control is always exercised during operation
(without zero limit)
Description
Droop compensation speed
158
100
Remarks
Droop gain
100%
Torque

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Fr-v520Fr-v540

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  • fayez ali Oct 15, 2016 01:06:
    advise haw can ruining the motor without encoder