2.10 n: Special Adjustment
500 YASKAWA TOEPYAIGA8002B GA800 Drive Programming
■ n8-02: Pole Alignment Current Level
No.
(Hex.)
Name Description
Default
(Range)
n8-02
(0541)
Expert
Pole Alignment Current
Level
Sets the current at the time of polar attraction as a percentage of E5-03 [Motor Rated Current (FLA)].
Usually it is not necessary to change this setting.
80%
(0 - 150%)
The drive uses the polar pull-in current to attract the rotor after it detects the initial rotor position. When you increase
the value of n8-02, the starting torque also increases.
• If the motor does not track correctly at the time of the polar attraction, increase the value in 10% increments. If you
set the value too high, the drive will detect oL2 [Drive Overloaded].
• If the motor oscillates at the time of the polar attraction, decrease the value in 10% increments.
Note:
• This function is available when you set A1-02 = 7 [Control Method Selection = CLV/PM] and do Rotational Auto-Tuning or Z Pulse Offset
Tuning.
• When A1-02 = 7, this parameter takes effect only in Expert Mode.
■ n8-03: Pole Position Detection Time
No.
(Hex.)
Name Description
Default
(Range)
n8-03
(0542)
Pole Position Detection
Time
Sets the length of the Current Starting Time, which is used for Z Pulse Offset Tuning. Usually it is
not necessary to change this setting.
1.5 s
(1.5 - 5.0 s)
Sets the length of time of pull-in current when the drive detects the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in 0.5 s increments. If the value is too high, the drive can detect
oL2 [Drive Overloaded].
■ n8-04: Pole Alignment Time
No.
(Hex.)
Name Description
Default
(Range)
n8-04
(0543)
Expert
Pole Alignment Time
Sets the length of the Polar Attraction Time, which is used for Z Pulse Offset Tuning. Usually it is
not necessary to change this setting.
1.5 s
(1.5 - 5.0 s)
Sets the length of time that the pull-in current flows when the drive detects the motor magnetic pole of the rotors.
Note:
If the motor oscillates at the time of the polar attraction, increase the value in 0.5 s increments. If you set the value too high, the drive will
detect oL2 [Drive Overloaded].
■ n8-11: Observer Calculation Gain 2
No.
(Hex.)
Name Description
Default
(Range)
n8-11
(054A)
Observer Calculation Gain 2
Sets the gain for speed estimation. Usually it is not necessary to change this setting.
Determined by n8-72
(0.0 - 1000.0)
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
150.0.
■ 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)
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