
Speed control under Real sensorless vector control, vector control, PM sensorless vector
control
170
P/PI control switchover according to the motor speed (Pr.1348)
• When the motor speed falls below the
Pr.1348
setting during speed control under Real sensorless vector control or Vector
control, speed loop integration is stopped and the accumulated integral term is cleared.
Pr.1348
setting or more: PI control
Less than the
Pr.1348
setting: P control
• The shock of P/PI control switchover is absorbed by setting
Pr.1115 Speed control integral term clear time
. When the
motor speed falls below the
Pr.1348
setting, speed loop integration is stopped and the accumulated integral term is
reduced and cleared according to the
Pr.1115
setting (initial value is 0 ms). In
Pr.1115
, set time when the integral term is
reduced from 100% to 0% regarding the rated torque current (Iq) as 100%. When the motor speed is increased to the
Pr.1348
setting plus 2 Hz or more, integral operation is resumed.
NOTE
• The speed loop integration can be disabled at the emergency stop using
Pr.1349 Emergency stop operation selection
.
(Refer to
.)
Содержание 800 Series
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