YASKAWA GA700 Technical Manual page 744

11.3 b: Application
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b8-16: PM E-Save Coefficient Ki
No.
Name
(Hex.)
b8-16 PM E-Save
Coefficient Ki
(01F8)
Expert
When b8-16 = 1.00 (default), the drive will automatically calculate and control the energy-saving coefficient. If
the motor nameplate has a description for "Ki", set this parameter to the Ki value.
Do this procedure to prevent oscillation when you set b8-01 = 1 [Energy Saving Control Selection = Enabled].
1. Check U5-21 [Energy Save Coeff Ki] and make sure that it aligns with the Ki value on the motor nameplate.
2. If the numbers are different, set b8-16 to the Ki value on the motor nameplate.
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b8-17: PM E-Save Coefficient Kt
No.
Name
(Hex.)
b8-17 PM E-Save
Coefficient Kt
(01F9)
Expert
When E5-01 = 1xxx, 2xxx [PM Motor Code Selection = Yaskawa SSR1 or SST4 series IPM motor], the drive
automatically calculates the energy-saving coefficient Kt and uses that value to control operation.
Do this procedure to prevent oscillation when you set b8-01 = 1 [Energy Saving Control Selection = Enabled].
1. Check U5-22 [Energy Save Coeff Kt] and make sure that it aligns with the Kt value on the motor nameplate.
2. If the numbers are different, set b8-17 to the Kt value on the motor nameplate.
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b8-18: E-Save d-axis Current FilterTime
No.
Name
(Hex.)
b8-18 E-Save d-axis
Current FilterTime
(01FA)
Expert
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b8-19: E-Save Search Injection Freq
No.
Name
(Hex.)
b8-19 E-Save Search
Injection Freq
(0B40)
Expert
Note:
• If low inertia causes vibration in the machine, increase the setting value in 10 Hz increments and check the response. If A1-02 = 8
[Control Method Selection = EZ Vector Control], increase the setting value in 1 Hz increments.
• To make the motor more efficient, decrease the setting value in 1 Hz increments until the point immediately before machine vibration
starts to occur.
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b8-20: E-Save Search Width
No.
Name
(Hex.)
b8-20 E-Save Search Width
(0B41)
Expert
An increase in the value can make the operational efficiency better. However, if the load inertia is small, it may be
necessary to adjust the value to prevent machine vibration.
744
V/f CL-V/f OLV CLV AOLV
Sets torque linearity. This parameter uses the Ki value from the motor
nameplate. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets torque linearity. This parameter uses the Kt value from the motor
nameplate. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the d-axis current reference filter time constant.
V/f CL-V/f OLV CLV AOLV
Sets the frequency of Energy-saving control search operations. Usually it is
not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the amplitude of Energy-saving control search operations.
YASKAWA ELECTRIC SIEP C710617 05F 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)
1.00
(0.00 - 3.00)
Default
(Range)
1.00
(0.00 - 3.00)
Default
(Range)
0.100 s
(0.000 - 5.000 s)
Default
(Range)
Determined by A1-02
(20 - 300 Hz)
Default
(Range)
1.0 degrees
(0.1 - 5.0 degrees)