YASKAWA GA700 Series Technical Manual page 687

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b8-06: Search Operation Voltage Limit
No.
Name
(Hex.)
b8-06 Search Operation Voltage
Limit
(01D1)
Expert
The Search Operation changes the output voltage in small increments to find a setpoint at which the drive can use
minimum power to operate.
Set this parameter to 0 to disable Search Operation. This will not disable Energy-saving control.
If the setting value is too low, the motor will stall when loads suddenly increase.
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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 Frequency
No.
Name
(Hex.)
b8-19 E-Save Search Frequency
(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 = EZOLV], 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.
YASKAWA SIEPC71061705H GA700 Series Technical Manual
V/f CL-V/f OLV CLV AOLV
Sets the voltage limit for Search Operation as a percentage of the motor rated voltage.
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.
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
12.3 b: Application
Default
(Range)
0%
(0 - 100%)
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
(10 - 300 Hz)
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