YASKAWA GA800 Technical Reference page 764

12.3 b: Application
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b8-05: Power Detection Filter Time
No.
Name
(Hex.)
b8-05 Power Detection Filter Time
(01D0)
Expert
Decrease the setting value to increase responsiveness to load changes. If you set the value too low during operation at
light loads, motor speed is not stable.
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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
764
V/f CL-V/f OLV CLV AOLV
Sets the time constant to measure output power.
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.
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
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Default
(Range)
20 ms
(0 - 2000 ms)
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)