Mitsubishi Electric FR-A820-00046 Instruction Manual page 699

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Parameters
Pr. 399 "Orientation deceleration ratio" (initial value: 20) (Vector control)
Make adjustments, as shown below, according to the orientation status. (Make adjustments in the or-
der of
Normally, adjust Pr. 362 "Orientation position loop gain" in the range from 5 to 20, and Pr. 399 "Ori-
entation deceleration ratio" from 5 to 50.
Condition
Rocking occurs during
stopping
The orientation time is long.
Hunting occurs during
stopping
Low servo rigidity during
stopping
Tab. 5-217: Adjustment of parameters
NOTE
Orientation stop operation will fail, causing an excessive position error, or if the motor performs
forward/reverse reciprocation operation
(on page 5-504) and Pr. 359 "Encoder rotation direction" (on page 5-503).
FR-A800
,
, and
.)
Adjustment procedure
Decrease the Pr. 399 setting.
Decrease the Pr. 362 setting.
Increase the Pr. 396 and Pr. 397 settings.
Increase the Pr. 399 setting.
Increase the Pr. 362 setting.
Decrease the Pr. 362 setting.
Decrease the Pr. 396 setting and increase the Pr. 397 setting.
Increase the Pr. 396 setting and decrease the Pr. 397 setting.
Increase the Pr. 362 setting.
, review the settings of Pr. 393 "Orientation selection"
(A) Application parameters
5 - 519

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