2.4 C: Tuning
210 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
■ C3-01: Slip Compensation Gain
No.
(Hex.)
Name Description
Default
(Range)
C3-01
(020F)
RUN
Slip Compensation Gain
Sets the gain for the slip compensation function. Usually it is not necessary to change this setting.
Determined by A1-02
(0.0 - 2.5)
Note:
Correctly set these parameters before changing the slip compensation gain:
• E2-01 [Motor Rated Current (FLA)]
• E2-02 [Motor Rated Slip]
• E2-03 [Motor No-Load Current]
Adjust this parameter as follows if necessary:
• If the motor speed is slower than the frequency reference, increase this parameter in 0.1-unit increments.
• If the motor speed is slower than the frequency reference value, decrease this parameter value in 0.1-unit
increments.
■ C3-02: Slip Compensation Delay Time
No.
(Hex.)
Name Description
Default
(Range)
C3-02
(0210)
RUN
Slip Compensation Delay
Time
Sets the slip compensation delay time when speed is unstable or when the slip compensation
response is too slow. Usually it is not necessary to change this setting.
Determined by A1-02
(0 - 10000 ms)
Use these settings to adjust this parameter as necessary:
• When the speed is not stable, increase the setting.
• When the slip compensation response is too slow, decrease the setting.
■ C3-03: Slip Compensation Limit
No.
(Hex.)
Name Description
Default
(Range)
C3-03
(0211)
Slip Compensation Limit
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip.
200%
(0 - 250%)
If you increase the value of C3-01 [Slip Compensation Gain] and the motor speed is slow, use this parameter. The
drive uses this parameter when the slip is at the upper limit of slip compensation. Make sure that you measure the
motor speed when you increase this parameter value. Set this parameter to make the frequency reference and the slip
compensation limit less than the permitted range of the machine.
The slip compensation limit is constant in the constant torque range (frequency reference ≤ E1-06 [Base Frequency]).
In the constant output range where the frequency reference > E1-06, the slip compensation limit increases with the
C3-03 value and the output frequency as shown in Figure 2.35.
Figure 2.35 Slip Compensation Limit
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