12.4 C: Tuning
552 YASKAWA SIEPC71061753C GA500 Technical Manual
■ C2-01: S-Curve Time @ Start of Accel
No.
(Hex.)
Name Description
Default
(Range)
C2-01
(020B)
S-Curve Time @ Start of
Accel
Sets the S-curve acceleration time at start.
Determined by A1-02
(0.00 - 10.00 s)
■ C2-02: S-Curve Time @ End of Accel
No.
(Hex.)
Name Description
Default
(Range)
C2-02
(020C)
S-Curve Time @ End of
Accel
Sets the S-curve acceleration time at completion.
0.20 s
(0.00 - 10.00 s)
■ C2-03: S-Curve Time @ Start of Decel
No.
(Hex.)
Name Description
Default
(Range)
C2-03
(020D)
S-Curve Time @ Start of
Decel
Sets the S-curve deceleration time at start.
0.20 s
(0.00 - 10.00 s)
■ C2-04: S-Curve Time @ End of Decel
No.
(Hex.)
Name Description
Default
(Range)
C2-04
(020E)
S-Curve Time @ End of
Decel
Sets the S-curve deceleration time at completion.
0.00 s
(0.00 - 10.00 s)
◆ C3: Slip Compensation
The Slip Compensation function improves the speed accuracy of an induction motor. As loads on induction
motors increase, motor slip increases and motor speed decreases. By adjusting the output frequency in accordance
with the motor load, it compensates the slip and makes the motor speed equal to the frequency reference.
■ 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.
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