11.10 n: Special Adjustment
1004 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
■ n8-37: HFI Voltage Amplitude Level
No.
(Hex.)
Name Description
Default
(Range)
n8-37
(0564)
Expert
HFI Voltage
Amplitude Level
Sets the high frequency injection amplitude as a percentage where 200 V =
100% for 200 V class drives and 400 V = 100% for a 400 V class drives.
Usually it is not necessary to change this setting.
20.0%
(0.0 - 50.0%)
Set n8-57 = 1 [HFI Overlap Selection = Enabled] to enable this parameter. When you do Auto-Tuning or
Rotational Auto-Tuning, the drive will automatically set this parameter.
Note:
When you change C6-02 [Carrier Frequency Selection], the drive automatically initializes this parameter. Set the carrier frequency you
will use, then do Auto-Tuning.
■ n8-41: HFI P Gain
No.
(Hex.)
Name Description
Default
(Range)
n8-41
(0568)
Expert
HFI P Gain
Sets the speed estimation response for high frequency injection. Usually it is
not necessary to change this setting.
3.0
(1.0 - 100.0)
Note:
Set n8-57 = 1 [HFI Overlap Selection = Enabled] or n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] to enable
this parameter.
■ n8-42: HFI I Time
No.
(Hex.)
Name Description
Default
(Range)
n8-42
(0569)
Expert
HFI I Time
Sets the oscillation suppression gain of the speed estimation for high
frequency injection. Usually it is not necessary to change this setting.
1.0
(0.1 - 5.0)
Note:
Set n8-57 = 1 [HFI Overlap Selection = Enabled] or n8-35 = 1 [Initial Pole Detection Method = High Frequency Injection] 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 parameter.
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.
■ n8-47: Pull-in Current Comp Filter Time
No.
(Hex.)
Name Description
Default
(Range)
n8-47
(053A)
Pull-in Current Comp
Filter Time
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
parameter.
5.0 s
(0.0 - 100.0 s)
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.
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