Learning Advanced Features
Cn.21 ASR-SL P
Gain1,
Cn.22 ASR-SL I
Gain1
Changes the speed PI controller gain during sensorless vector control.
For a PI speed controller, P gain is a proportional gain for the speed
deviation. If speed deviation becomes higher than the torque the output
command increases accordingly. As the value increases, the faster the
speed deviation decreases. The speed controller I gain is the integral
gain for speed deviation. It is the time taken for the gain to reach the
rated torque output command while a constant speed deviation
continues. The lower the value becomes, the faster the speed deviation
decreases.
Cn.23 ASR-SL P
Gain2,
Cn.24 ASR-SL I
Gain2
Appears only when 1 (Yes) is selected for Cn.20 (SL2 G view Sel). The
speed controller gain can be increased to more than the medium speed
for sensorless vector control. Cn.23 ASR-SL P Gain2 is set as a
percentage of the low speed gain Cn.21 ASR-SL P Gain1 - if P Gain 2 is
less than 100.0%, the responsiveness decreases. For example, if Cn.21
ASR-SL P Gain1 is 50.0% and Cn.23 ASR-SL P Gain2 is 50.0%, the
actual middle speed or faster speed controller P gain is 25.0%.
Cn.24 ASR-SL I Gain2 is also set as a percentage of the Cn.22 ASR-SL
I Gain1. For I gain, the smaller the I gain 2 becomes, the slower the
response time becomes. For example, if Cn.22 ASR-SL I Gain1 is
100ms and Cn.24 ASR-SL I Gain2 is 50.0%, the middle speed or faster
speed controller I gain is 200 ms. The controller gain is set according to
the default motor parameters and Acc/Dec time.
Cn.26 Flux P Gain,
Cn.27 Flux I Gain,
Cn.85-87 Flux P
Gain13,
Cn.88-90 Flux I
Gain1-3
Sensorless vector control requires the rotor flux estimator. For the
adjustment of flux estimator gain, refer to 5.10.2 Sensorless Vector
Control Operation Guide for Induction Motors on page 193.
Cn.28 S-Est P Gain1,
Cn.29 S-Est I Gain1,
Cn.30 S-Est I Gain2
Speed estimator gain for sensorless vector control can be adjusted. To
adjust speed estimator gain, refer to 5.10.2 Sensorless Vector Control
Operation Guide for Induction Motors on page 193.
Cn.31 ACR SL P
Gain, Cn.32 ACR SL I
Gain
Adjusts the P and I gains of the sensorless current controller. For the
adjustment of sensorless current controller gain, refer to 5.10.2
Sensorless Vector Control Operation Guide for Induction Motors on
page 193.
Select a type of torque limit setting, using the keypad, terminal block
analog input (V1 and I2) or communication power. When setting torque
limit, adjust the torque size by limiting the speed controller output. Set
the retrograde and regenerative limits for forward and reverse operation.
Sets the torque limit with the keypad.
Sets the torque limit with the analog input
terminal of the terminal block.
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