YASKAWA U1000 Series - Page 220

5.3 C: Tuning
220 YASKAWA ELECTRIC SIEP C710636 02B YASKAWA U1000 Technical Manual
Setting 0: Disabled
Setting 1: Enabled
■ C3-21: Motor 2 Slip Compensation Gain
Used to improve speed accuracy for motor 2. Functions in the same way that C3-01 functions for motor 1.
Adjust this parameter only after the motor 2 rated current (E4-01), motor 2 rated slip (E4-02), and the motor 2 no-load
current (E4-03) have all been set.
Refer to C3-01: Slip Compensation Gain on page 218 for details on adjusting this parameter.
Note: Default setting is 0.0 in V/f Control (E3-01 = 0). Default setting is 1.0 in Open Loop Vector Control (E3-01 = 2) and Closed Loop
Vector Control (E3-01 = 3). In Closed Loop Vector Control, slip compensation gain acts as an adaptable gain.
■ C3-22: Motor 2 Slip Compensation Primary Delay Time
Functions for motor 2 in the same way that C3-02 functions for motor 1.
Refer to C3-02: Slip Compensation Primary Delay Time on page 219 for instructions on how to adjust this parameter.
Note: The default for V/f Control (E3-01 = 0) is 2000 ms. The default for Open Loop Vector Control (E3-01 = 2) is 200 ms.
■ C3-23: Motor 2 Slip Compensation Limit
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip (E4-02).
The slip compensation limit is constant throughout the constant torque range (frequency reference ≤ E3-06). In the
constant power range (frequency reference > E3-06), it is increased based on C3-23 and the output frequency as shown in
Figure 5.35.
Figure 5. 35
Figure 5.35 Slip Compensation Limit
■ C3-24: Motor 2 Slip Compensation Selection during Regeneration
Functions for motor 2 in the same way that C3-04 functions for motor 1.
Setting 0: Disabled
Setting 1: Enabled (6 Hz and above)
Setting 2: Enabled (compensation provided wherever possible)
No. Parameter Name Setting Range Default
C3-05 Output Voltage Limit Operation Selection 0 or 1 0
No. Parameter Name Setting Range Default
C3-21 Motor 2 Slip Compensation Gain 0.0 to 2.5 Determined by E3-01
No. Parameter Name Setting Range Default
C3-22 Motor 2 Slip Compensation Primary Delay Time 0 to 10000 ms Determined by E3-01
No. Parameter Name Setting Range Default
C3-23 Motor 2 Slip Compensation Limit 0 to 250% 200%
No. Parameter Name Setting Range Default
C3-24 Motor 2 Slip Compensation Selection during Regeneration 0 to 2 0
E3-04
E3-06
× C3-23
C3-23
E3-04
Maximum Output
Frequency
E3-06
Base
Frequency
Output Frequency
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