YASKAWA GA700 Series Technical Manual page 936

12.10 n: Special Adjustment
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n8-47: Pull-in Current Comp Filter Time
No.
Name
(Hex.)
n8-47 Pull-in Current Comp Filter
Time
(053A)
Adjust this parameter in these conditions:
• If the time for the reference value of the pull-in current to align with the target value is too long, increase the
setting value.
• If vibration or hunting occur, decrease the setting value in 0.2 unit increments.
• If the motor stalls during run at constant speed, decrease the setting value in 0.2 unit increments.
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n8-48: Pull-in/Light Load Id Current
No.
Name
(Hex.)
n8-48 Pull-in/Light Load Id
Current
(053B)
Adjust in the following situations.
• Slightly reduce this value if there is too much current when driving a light load at a constant speed.
• Increase the setting value in steps of 5% when hunting or vibration occurs during run at constant speed.
• Increase the setting value in steps of 5% if the motor stalls during run at constant speed.
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n8-49: Heavy Load Id Current
No.
Name
(Hex.)
n8-49 Heavy Load Id Current
(053C)
Expert
When you use an IPM motor, you can use the reluctance torque of the motor to make the motor more efficient and
help conserve energy.
When you operate an SPN motor, set this parameter to 0.
Adjust this parameter in these conditions:
• If the load is large and motor rotation is not stable, decrease the setting value.
• If you change the E5 parameters [PM Motor Settings], set n8-49 = 0, then adjust this parameter.
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n8-51: Pull-in Current @ Acceleration
No.
Name
(Hex.)
n8-51 Pull-in Current @
Acceleration
(053E)
Adjust in the following situations.
• When the motor does not smoothly because of large loads, increase the setting value in 5% increments.
• If too much current flows during acceleration, decrease the setting value.
Note:
When A1-02 = 8 [Control Method Selection = EZOLV], this parameter will always be in effect for speed ranges less than n7-10 [Pull-in
Current Switching Speed].
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n8-54: Voltage Error Compensation Time
No.
Name
(Hex.)
n8-54 Voltage Error
Compensation Time
(056D)
Expert
936
V/f CL-V/f OLV CLV AOLV
Sets the time constant the drive uses to align the pull-in current reference value with the actual
current value. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the d-axis current that flows to the motor during run at constant speed as a percentage where
E5-03 [PM Motor Rated Current (FLA)] = 100%.
V/f CL-V/f OLV CLV AOLV
Sets the d-axis current to that the drive will supply to the motor to run it at a constant speed with a
heavy load. Considers E5-03 [PM Motor Rated Current (FLA)] to be 100%. Usually it is not
necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the pull-in current allowed to flow during acceleration/deceleration as a percentage of the
motor rated current.
V/f CL-V/f OLV CLV AOLV
Sets the time constant that the drive uses when adjusting for voltage errors.
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 SIEPC71061705H GA700 Series Technical Manual
Default
(Range)
5.0 s
(0.0 - 100.0 s)
Default
(Range)
30%
(20 - 200%)
Default
(Range)
Determined by E5-01
(-200.0 - 0.0%)
Default
(Range)
Determined by A1-02
(0 - 200%)
Default
(Range)
1.00 s
(0.00 - 10.00 s)