C3: Slip Compensation - YASKAWA GA700 Technical Manual

11.4 C: Tuning
■
C2-01: S-Curve Time @ start of Accel
No.
Name
(Hex.)
C2-01 S-Curve Time @
Start of Accel
(020B)
■
C2-02: S-Curve Time @ end of Accel
No.
Name
(Hex.)
C2-02 S-Curve Time @ End
of Accel
(020C)
■
C2-03: S-Curve Time @ start of Decel
No.
Name
(Hex.)
C2-03 S-Curve Time @
Start of Decel
(020D)
■
C2-04: S-Curve Time @ end of Decel
No.
Name
(Hex.)
C2-04 S-Curve Time @ End
of Decel
(020E)
◆

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.
Name
(Hex.)
C3-01 Slip Compensation
Gain
(020F)
RUN
Note:
• Confirm that the following parameters are correctly set before changing the slip compensation gain. If A1-02 = 2 [Control Method
Selection = Open Loop Vector Control], E2-02 [Motor Rated Slip] can be set by Auto-Tuning.
–E2-01 [Motor Rated Current (FLA)]
–E2-02 [Motor Rated Slip]
–E2-03 [Motor No-Load Current]
• If A1-02 = 3 [Closed Loop Vector Control], the slip compensation gain will become the motor temperature compensation gain. The
motor internal constant changes as the motor temperature rises, which increases the slip. If C3-01 is set, the slip will be adjusted in
accordance with rises in temperature. Adjust the parameter in the following circumstances. Increasing the setting value also increases
the compensation.
–Torque control is being performed.
–Torque limits are in place.
–Output torque changes in accordance with temperature.
Adjustment may help in the following situations:
• If the motor speed is slower than the frequency reference, increase C3-01 by 0.1.
• If the motor at constant speed is faster than the frequency reference, decrease C3-01 by 0.1.
648
V/f CL-V/f OLV CLV AOLV
Sets the S-curve time to the time to start acceleration.
V/f CL-V/f OLV CLV AOLV
Sets the S-curve time to the time to complete acceleration.
V/f CL-V/f OLV CLV AOLV
Sets the S-curve time to the time to start deceleration.
V/f CL-V/f OLV CLV AOLV
Sets the S-curve time to the time to complete deceleration.
V/f CL-V/f OLV CLV AOLV
Sets the gain for the slip compensation function. Normally there is no need
to change this setting.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
Determined by A1-02
(0.00 to 10.00 s)
Default
(Range)
0.20 s
(0.00 - 10.00 s)
Default
(Range)
0.20 s
(0.00 - 10.00 s)
Default
(Range)
0.00 s
(0.00 - 10.00 s)
Default
(Range)
Determined by A1-02
(0.0 - 2.5)