YASKAWA GA800 Technical Reference page 1028

12.10 n: Special Adjustment
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n8-45: Speed Feedback Detection Gain
No.
Name
(Hex.)
n8-45 Speed Feedback Detection
Gain
(0538)
Adjust this parameter in these conditions:
• If vibration or hunting occur, increase the setting value in 0.05 unit increments.
• If the responsiveness of torque and speed is unsatisfactory, decrease the setting value 0.05 unit increments and
examine the response.
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n8-46: PM Phase Compensation Gain
No.
Name
(Hex.)
n8-46 PM Phase Compensation
Gain
(0539)
Expert
If there is vibration in the motor, increase the value. When you must detect oC [Overcurrent] or ov [DC Bus
Overvoltage], set this parameter to a low value.
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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)
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.
1028
V/f CL-V/f OLV CLV AOLV
Sets the internal speed feedback detection reduction unit gain as a magnification value. Usually it is
not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the gain to compensate for phase differences. Usually it is not necessary to change this setting.
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.
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)
0.80
(0.00 - 10.00)
Default
(Range)
0.3
(0.0 - 10.0)
Default
(Range)
5.0 s
(0.0 - 100.0 s)
Default
(Range)
30%
(0 - 200%)
Default
(Range)
Determined by E5-01
(-200.0 - +200.0%)