Speed Feed Forward Control And Model Adaptive Speed Control - Mitsubishi Electric FR-A820-00046 Instruction Manual

Parameters Speed control under Real sensorless vector control, vector control, PM sensorless vector control
5.3.7

Speed feed forward control and model adaptive speed control

Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Sensorless Vector Sensorless Sensorless
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.
Pr.
828
G224
877
G220
878
G221
879
G222
880
C114
881
G223
1119
G262
1121
G260
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.
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.)
FR-A800
PM PM PM
Vector Vector
Name
Model speed control gain
Speed feed forward
control/model adaptive
speed control selection
Speed feed forward filter
Speed feed forward torque
limit
Load inertia ratio
Speed feed forward gain
Model speed control gain
(per-unit system)
120 Hz
Per-unit speed control
reference frequency
Initial Setting
Description
value range
60% 0 to 1000% Set the gain for the model speed controller.
0 Perform normal speed control.
0 1 Perform speed feed forward control.
2 Model adaptive speed control becomes valid.
Set the primary delay filter for the result of the speed
0 s 0 to 1 s feed forward calculated from the speed command
and load inertia ratio.
Set a maximum limit for the speed feed forward
150% 0 to 400%
torque.
7-fold 0 to 200-fold Set the load inertia ratio for the motor.
Set the calculation result for speed feed forward as
0% 0 to 1000%
the gain.
Set the gain for the model speed controller in the per-
0 to 300
unit system.
9999
9999 The Pr. 828 setting is applied to the operation.
Set the speed at 100% when setting speed control P
0 to 300 gain or model speed control gain in the per-unit
60 Hz
system.
5 - 115