YASKAWA GA700 - Page 763

Parameter Details
11
11.4 C: Tuning
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 763
Figure 11.56 ASR Gain and Integral Time Adjustment
2. Run the motor at minimum speed and decrease C5-04 [ASR Integral Time 2] as much as possible without
oscillation.
3. Check the output current monitor to make sure that the output current is less than 50% of the drive rated
current. If the setting value is higher than 50%, decrease C5-03 and increase C5-04.
4. Run the motor at maximum speed and increase C5-01 [ASR Proportional Gain 1] as much as possible without
oscillations.
5. Run the motor at maximum speed and decrease C5-02 [ASR Integral Time 1] as much as possible without
oscillations.
6. If higher speed precision and faster response during acceleration or deceleration are necessary, set C5-12 = 1
[Integral Operation @ Accel/Decel = Enabled] to enable integral control during acceleration/decel.
Note:
• If overshooting occurs when acceleration ends, decrease the value set in C5-01 and increase the value set in C5-02.
• If undershoot occurs at stop, decrease C5-03 and increase C5-04.
• If you adjust the gain and it does not correct overshooting and undershooting, decrease the value set in C5-05 [ASR Limit] to decrease
the upper limit of the frequency reference compensation.
■ ASR Adjustment Procedure for CLV, AOLV, AOLV/PM, CLV/PM, and EZOLV
Do this procedure to adjust ASR parameters:
1. Run the motor at zero speed or low speed and increase C5-01 [ASR Proportional Gain 1] until immediately
before vibration starts to occur.
2. Run the motor at zero speed or low speed and decrease C5-02 [ASR Integral Time 1] until immediately before
vibration starts to occur.
3. Check for oscillation when you run the motor at maximum speed.
4. If oscillation occurs, increase C5-02 and decrease C5-01. When there is no oscillation, the adjustment
procedure is complete.
5. Set the low-speed gain. Run the motor at zero speed or low speed and increase C5-03 [ASR Proportional Gain
2] until immediately before vibration starts to occur.
Figure 11.57 Low-speed/High-speed Gain Settings
6. Set the low-speed integral time. Run the motor at zero speed or low speed and decrease C5-04 [ASR Integral
Time 2] until immediately before vibration starts to occur.
7. Set C5-07 [ASR Gain Switchover Frequency].
8. Check for oscillation when you run the motor at speeds more than the setting in C5-07.
Note:
• If overshooting occurs when acceleration ends, decrease the value set in C5-01 and increase the value set in C5-02.
• If undershoot occurs at stop, decrease C5-03 and increase C5-04.