12.10 n: Special Adjustment
934 YASKAWA SIEPC71061705H GA700 Series Technical Manual
■ n8-14: Polarity Compensation Gain 3
No.
(Hex.)
Name Description
Default
(Range)
n8-14
(054D)
Expert
Polarity Compensation
Gain 3
Sets the gain for speed estimation. Usually it is not necessary to change this setting.
1.000
(0.000 - 10.000)
■ n8-15: Polarity Compensation Gain 4
No.
(Hex.)
Name Description
Default
(Range)
n8-15
(054E)
Expert
Polarity Compensation
Gain 4
Sets the gain for speed estimation. Usually it is not necessary to change this setting.
0.500
(0.000 - 10.000)
■ n8-21: Motor Back-EMF (Ke) Gain
No.
(Hex.)
Name Description
Default
(Range)
n8-21
(0554)
Expert
Motor Back-EMF (Ke)
Gain
Sets the gain for speed estimation. Usually it is not necessary to change this setting.
0.90
(0.80 - 1.00)
■ n8-35: Initial Pole Detection Method
No.
(Hex.)
Name Description
Default
(Range)
n8-35
(0562)
Initial Pole Detection
Method
Sets how the drive detects the position of the rotor at start.
Determined by A1-02
(0 - 2)
When you set A1-02 = 7 [Control Method Selection = CLV/PM], the initial motor magnetic pole detection
operates the first time after you energize the drive. After the first time, the drive uses the encoder signal to
calculate the rotor position and the drive saves the value until you de-energize the drive. If you use an absolute
value encoder, the initial motor magnetic pole detection will not operate.
Note:
• When you use an SPM motor, set n8-35 = 0. When you use an IPM motor, set n8-35 = 0 to 2.
• When you set n8-35 = 1, do High Frequency Injection Auto-Tuning.
• When you set n8-35 = 0 or 2, always evaluate the drive with the equipment being used for the application. If the drive incorrectly
detects the polarity, the motor can rotate in the direction opposite of the Run command.
0 : Pull-in
Starts the rotor with pull-in current.
1 : High Frequency Injection
Injects high frequency to detect the rotor position. This setting can cause a loud excitation sound when the motor
starts.
Note:
When you set 1, do High Frequency Injection Auto-Tuning.
2 : Pulse Injection
Inputs the pulse signal to the motor to detect the rotor position.
■ n8-36: HFI Frequency Level for L Tuning
No.
(Hex.)
Name Description
Default
(Range)
n8-36
(0563)
HFI Frequency Level for L
Tuning
Sets the injection frequency for high frequency injection.
500 Hz
(200 - 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.
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