Parameter Details
11
11.4 C: Tuning
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 759
Figure 11.53 Motor 2 Slip Compensation Limit
■ C3-24: Motor 2 Slip Comp during Regen
No.
(Hex.)
Name Description
Default
(Range)
C3-24
(0243)
Motor 2 Slip Comp
during Regen
Sets the slip compensation during regenerative operation function for motor
2.
0
(0 - 2)
If you apply a regenerative load when slip compensation during regeneration is active, it can be necessary to use a
dynamic braking option (braking resistor or braking resistor unit).
0 : Disabled
The drive does not provide slip compensation.
The load and operation status (regenerative operation) can cause the motor speed to be higher or lower than the
frequency reference.
1 : Enabled Above 6Hz
Slip compensation function is enabled during regenerative operation. Slip compensation is disabled at output
frequencies of 6 Hz or less.
2 : Enabled Above C3-15
The drive uses E2-02 [Motor Rated Slip] to automatically calculate the frequency range where it will disable slip
compensation function during regenerative operation.
Slip compensation is enabled at frequencies as low as 2 Hz.
■ C3-28: Adaptive Slip Control Mode
No.
(Hex.)
Name Description
Default
(Range)
C3-28
(1B5B)
Expert
Adaptive Slip Control
Mode
Sets the slip compensation function mode.
0
(0, 1)
0 : Normal
1 : Advanced
Note:
Set C3-28 = 0 for better torque precision. If the torque precision does is not better, set C3-28 = 1 and increase the value of n4-65 [Flux
Estimate Response@High Freq] or n4-66 [Flux Estimate Response @Low Freq] in 0.1-unit increments. Then, you must do Rotational
Auto-Tuning.
◆ C4: Torque Compensation
Torque compensation is a function that increases voltage to increase output torque as compensation for
insufficient torque production at start-up or low-speed operation.
Voltage drops due to motor winding resistance cause torque generating voltage to decrease, which causes
insufficient torque. If the main circuit cable connecting the drive and motor is long, this can also cause insufficient
torque due to voltage drops.
Note:
Set the motor parameters and V/f pattern properly before setting C4 parameters.
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