12.4 C: Tuning
698 YASKAWA SIEPC71061705H GA700 Series 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:
• When A1-02 = 4 [AOLV], you cannot change the setting while the drive is running.
• Correctly set these parameters before you change the slip compensation gain:
–E2-01 [Motor Rated Current (FLA)]
–E2-02 [Motor Rated Slip]
–E2-03 [Motor No-Load Current]
• When A1-02 = 3 [Closed Loop Vector], the slip compensation gain becomes the motor temperature compensation gain. When the
motor temperature increases, the motor internal constant changes and increases the slip. When you set this parameter, the drive adjusts
the slip with the increase in temperature. Adjust this parameter in these conditions: When the setting value increases, the compensation
also increases:
–The drive is doing torque control.
–There are torque limits.
–Output torque changes when the temperature changes.
Adjust this parameter as follows if necessary:
• If the motor speed is slower than the frequency reference, increase C3-01 in 0.1-unit increments.
• If the motor speed is faster than the frequency reference, decrease C3-01 in 0.1-unit increments.
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