Parameter Details
11
11.10 n: Special Adjustment
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 1003
Note:
When n8-72 = 0 [Speed Estimation Method Select = Method 1], the default value is 50.0. When n8-72 = 1 [Method 2], the default value
is 30.0 for drives that have a maximum capacity of 2042 (4023). The default is 50.0 for 2056 (4031) and larger models.
■ 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 A1-02 = 7 [Control Method Selection = PM Closed Loop Vector], the initial motor magnetic pole detection
operates the first time after the drive is energized. After that, the drive uses the encoder signal to calculate the
rotor position and the drive saves the value until the drive is de-energized.
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.
2 : Pulse Injection
Inputs the pulse signal to the motor to detect the rotor position.
Note:
• When you use an SPM motor, set this parameter to 0. Values between 0 to 2 can be selected if using IPM motors.
• If the drive incorrectly detects the polarity direction, the motor can rotate in the opposite direction of the Run command.
■ 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 - 5000 Hz)
PM Rotational Auto-Tuning and PM Stationary Auto-Tuning automatically calculate this parameter value.
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