YASKAWA CR700, Техническое руководство, Страница: 606 / 886

11.4 C: Tuning
606 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Note:
• Correctly set these parameters before you change the slip compensation gain: When
A1-02 = 2 [Control Method Selection = Open
Loop Vector]
, you can use Auto-Tuning to set
E2-02 [Motor Rated Slip]
.
– 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. If C3-01 is set, the slip will be adjusted in
accordance with rises in temperature. Adjust this parameter in these conditions: When the setting value increases, the compensation
also increases.
– There are torque limits.
– Output torque changes when the temperature changes.
• When
A1-02 = 4 [Advanced Open Loop Vector]
, you cannot change the setting while the drive is running.
Adjust this parameter in these conditions:
• If the motor speed is slower than the frequency reference, increase the setting value in 0.1-unit increments
• If the motor speed is faster than the frequency reference, decrease the setting 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.
■
C3-03: Slip Compensation Limit
No.
(Hex.)
Name Description
Default
(Range)
C3-03
(0211)
Slip Compensation Limit
Sets the upper limit for the slip compensation function as a percentage of the motor rated slip.
200%
(0 - 250%)
If you increase the value of C3-01 [Slip Compensation Gain] and the motor speed is slow, use this parameter. The
drive uses this parameter when the slip is at the upper limit of slip compensation. Make sure that you measure the
motor speed when you increase this parameter value. Set this parameter to make the frequency reference and the
slip compensation limit less than the permitted range of the machine.
The slip compensation limit is constant in the constant torque range (frequency reference ≤
E1-06 [Base
Frequency] ). In the constant output range where the frequency reference > E1-06 , the slip compensation limit
increases with the C3-03 value and the output frequency as shown in Figure 11.33 .
Figure 11.33 Slip Compensation Limit
■
C3-04: Slip Compensation at Regen
No.
(Hex.)
Name Description
Default
(Range)
C3-04
(0212)
Slip Compensation at
Regen
Sets the slip compensation function during regenerative operation.
0
(0 - 2)
V/f CL-V/f OLV CLV AOLV
V/f CL-V/f OLV CLV AOLV
V/f CL-V/f OLV CLV AOLV