YASKAWA FSDrive-MV1000 Parameter Manual page 131

Figure 2.24 explains how S-curves are applied.
Figure 2.24
Setting the S-curve will increase the acceleration and deceleration times.
Actual accel time = accel time setting + (C2-01 + C2-02) / 2
Actual decel time = decel time setting + (C2-03 + C2-04) / 2
u C3: Slip Compensation
The Slip Compensation function improves the speed accuracy of an induction motor. By adjusting the output frequency
in accordance with the motor load, it compensates for the slip and makes the motor speed equal to the frequency
reference.
Note: In Closed Loop Vector control, perform Auto-Tuning and make sure that the motor rated current (E2-01), the motor rated slip
(E2-02), and the no-load current (E2-03) have all been set properly before making any adjustments to slip compensation
parameters.
C3-01: Slip Compensation Gain
n
Sets the gain for the motor slip compensation function. Although this parameter rarely needs to be changed, adjustments
might be needed under the following circumstances:
• Increase the setting if the motor at constant speed is slower than the frequency reference.
• Decrease the setting if the motor at constant speed is faster than the frequency reference.
No.
C3-01
<1> Refer to Control Mode Dependent Parameter Default Values on page 84
C3-02: Slip Compensation Primary Delay Time
n
Adjusts the filter on the output side of the slip compensation function. Although this parameter rarely needs to be
changed, adjustment may help in the following situations:
• Decrease the setting when the slip compensation response is too slow.
• Increase this setting when the speed is unstable.
No.
C3-02 Slip Compensation Primary Delay Time
<1> Refer to Control Mode Dependent Parameter Default Values on page 84
C3-03: Slip Compensation Limit
n
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip (E2-02).
No.
C3-03
YASKAWA ELECTRIC TOEP C710687 03B FSDrive-MV1000 Parameter Guide
ON
Forward run
OFF
Reverse run
C2-02
Output frequency
C2-01
common_TMonly
Figure 2.24 S-Curve Timing Diagram - FWD/REV Operation
Name
Slip Compensation Gain
Name
Name
Slip Compensation Limit
OFF
ON
C2-04
C2-03
C2-01
C2-03
C2-02
Setting Range
0.0 to 2.5
for details on default settings.
Setting Range
0 to 10000 ms
for details on default settings.
Setting Range
0 to 250%
2.3 C: Tuning
C2-04
Default
Determined by A1-02
Default
Determined by A1-02
Default
200%
<1>
<1>
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