explains how S-curves are applied.
C2-02
C2-01
C2-03
C2-04
C2-02
C2-01
C2-03
C2-04
FWD run
REV run
Output
frequency
Figure 5.27 S-Curve Timing Diagram - FWD/REV Operation
Setting the S-curve will increase the acceleration and deceleration times.
Actual accel time = accel time s (C2-01 + C2-02)/2
Actual decel time = decel time s (C2-03 + C2-04)/2
u
C3: Slip Compensation
The Slip Compensation function prevents motor speed loss due to an increase in load.
Note:
Before making changes to the Slip Compensation parameters, make sure the motor parameters and V/f pattern are set properly or perform
Auto-Tuning.
n
C3-01: Slip Compensation Gain
This parameter sets the gain for the motor slip compensation function. Although this parameter rarely needs to be changed,
adjustments might be needed under the following situations:
• If the speed at constant frequency reference is lower than the frequency reference, increase C3-01.
• If the speed at constant frequency reference is higher than the frequency reference, decrease C3-01.
No.
Parameter Name
Setting Range
Default
C3-01
Slip Compensation Gain
0.0 to 2.5
Determined by
A1-02
Note:
Default setting is 0.0 in V/f Control (A1-02 = 0). Default setting is 1.0 in Open Loop Vector Control (A1-02 = 2). This parameter is disabled
when using V/f Control with Simple PG Feedback (H6-01 = 3).
n
C3-02: Slip Compensation Primary Delay Time
Adjusts the filter on the output of the slip compensation function. Although this parameter rarely needs to be changed,
adjustments might be needed under the following situations:
• Decrease the setting when the slip compensation response is too slow.
• Increase this setting when the speed is not stable.
No.
Parameter Name
Setting Range
Default
C3-02
Slip Compensation Primary Delay Time
0 to 10000 ms
Determined by
A1-02
Note:
When using V/f Control (A1-02 = 0), the default setting becomes 2000 ms. When using Open Loop Vector Control (A1-02 = 2), the default
setting becomes 200 ms. This function is not available when using V/f Control with Simple PG Feedback.
n
C3-03: Slip Compensation Limit
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip (E2-02).
No.
Parameter Name
Setting Range
Default
C3-03
Slip Compensation Limit
0 to 250%
200%
5.3 C: Tuning
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
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Parameter Details