Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

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Parameters Speed control under Real sensorless vector control, vector control, PM sensorless vector control
FR-A800 5 - 115
5.3.7 Speed feed forward control and model adaptive speed control
Speed feed forward control or model adaptive speed control can be selected using parameter set-
tings.
Under speed feed forward control, the motor trackability for speed command changes can be im-
proved.
Under model adaptive speed control, the speed trackability and the response level to motor external
disturbance torque can be adjusted individually.
The value for the FR-A820-03160(55K) or lower and FR-A840-01800(55K) or lower.
The value for the FR-A820-03800(75K) or higher and FR-A840-02160(75K) or higher.
Pr. Name
Initial
value
Setting
range
Description
828
G224
Model speed control gain 60% 0 to 1000% Set the gain for the model speed controller.
877
G220
Speed feed forward
control/model adaptive
speed control selection
0
0 Perform normal speed control.
1 Perform speed feed forward control.
2 Model adaptive speed control becomes valid.
878
G221
Speed feed forward filter 0 s 0 to 1 s
Set the primary delay filter for the result of the speed
feed forward calculated from the speed command
and load inertia ratio.
879
G222
Speed feed forward torque
limit
150% 0 to 400%
Set a maximum limit for the speed feed forward
torque.
880
C114
Load inertia ratio 7-fold 0 to 200-fold Set the load inertia ratio for the motor.
881
G223
Speed feed forward gain 0% 0 to 1000%
Set the calculation result for speed feed forward as
the gain.
1119
G262
Model speed control gain
(per-unit system)
9999
0 to 300
Set the gain for the model speed controller in the per-
unit system.
9999 The Pr. 828 setting is applied to the operation.
1121
G260
Per-unit speed control
reference frequency
120 Hz
0 to 300
Set the speed at 100% when setting speed control P
gain or model speed control gain in the per-unit
system.
60 Hz
NOTE When using model adaptive speed control, use the data obtained from the easy gain tuning for
Pr. 828 "Model speed control gain" setting. Make the setting with easy gain tuning (at the same
time). (Refer to page 5-72.)
Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Vector
Vector Vector
PM PM PM