Parameter Details
2
2.10 n: Special Adjustment
YASKAWA TOEPYAIGA8002B GA800 Drive Programming 503
■ n8-39: HFI LPF Cutoff Freq
No.
(Hex.)
Name Description
Default
(Range)
n8-39
(0566)
PM Phase Compensation
Gain
Sets the low-pass filter shut-off frequency for high frequency injection.
250 Hz
(0 - 1000 Hz)
Note:
• Set n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] or n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this
parameter.
• The drive automatically calculates this value when High Frequency Injection Auto-Tuning completes successfully.
■ n8-41: HFI P Gain
No.
(Hex.)
Name Description
Default
(Range)
n8-41
(0568)
Expert
HFI P Gain
Sets the response gain for the high frequency injection speed estimation.
2.5
(-10.0 - +10.0)
Note:
• Set n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] or n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this
parameter.
• Set n8-41 > 0.0 for IPM motors.
Configure the setting as follows.
• Decrease the setting in units of 0.5 if an oscillation or hunting occurs.
• Increase the setting in units of 0.5 if tracking related to load changes is required.
■ n8-42: HFI I Time
No.
(Hex.)
Name Description
Default
(Range)
n8-42
(0569)
Expert
HFI I Time
Sets the integral time constant for the high frequency injection speed estimation. Usually it is not
necessary to change this setting.
0.10 s
(0.00 - 9.99 s)
Note:
Set n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] or n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this
parameter.
■ n8-45: Speed Feedback Detection Gain
No.
(Hex.)
Name Description
Default
(Range)
n8-45
(0538)
Speed Feedback Detection
Gain
Sets the internal speed feedback detection reduction unit gain as a magnification value. Usually it is
not necessary to change this setting.
0.80
(0.00 - 10.00)
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.
■ n8-46: PM Phase Compensation Gain
No.
(Hex.)
Name Description
Default
(Range)
n8-46
(0539)
Expert
PM Phase Compensation
Gain
Sets the gain to compensate for phase differences. Usually it is not necessary to change this setting.
0.3
(0.0 - 10.0)
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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