2.10 n: Special Adjustment
424 YASKAWA TOEPYAIGA5002A GA500 Programming
■ n8-84: Polarity Detection Current
No.
(Hex.)
Name Description
Default
(Range)
n8-84
(02D3)
Expert
Polarity Detection Current
Sets the current that the drive uses to estimate the initial motor magnetic pole as a percentage where
E5-03 [PM Motor Rated Current (FLA)] = 100%.
100%
(0 - 150%)
WARNING! Sudden Movement Hazard. Make sure that the polarity is correct before you send a Run command. If the drive
incorrectly detects the polarity, the drive can rotate in the direction opposite of the Run command and cause serious injury or death.
When you use a Yaskawa motor, check the motor nameplate for an “Si” value and set this parameter ≥ "Si × 2".
Consult the motor manufacturer for information about maximum setting values.
Find the Polarity of Magnetic Poles
When you start operation, the drive estimates the magnetic poles and finds the polarity of the magnetic poles.
Use U6-57 [PolePolarityDeterVal] to make sure that the magnetic pole estimate was correct.
When you do High Frequency Injection Auto-Tuning, the drive automatically sets n8-84.
■ n8-87: Output Voltage Limit Selection
No.
(Hex.)
Name Description
Default
(Range)
n8-87
(02BC)
Output Voltage Limit
Method
Sets the method of output voltage limit. If there is vibration in the constant output range, set
Feedforward Method. Usually it is not necessary to change this setting.
0
(0, 1)
0 : Feedback Method
1 : Feedforward Method
■ n8-88: Vout Limit Switching Level
No.
(Hex.)
Name Description
Default
(Range)
n8-88
(02BD)
Vout Limit Switching Level
Sets the current level at which output voltage limit sequence selection occurs as a percentage where
the motor rated current is 100%. Normally there is no need to change this setting.
400%
(0 - 400%)
■ n8-89: Vout Limit Switching Hysteresis
No.
(Hex.)
Name Description
Default
(Range)
n8-89
(02BE)
Vout Limit Switching
Hysteresis
Sets the hysteresis width of the current level at which output voltage limit sequence selection occurs
as a percentage where the motor rated current is 100%. Normally there is no need to change this
setting.
3%
(0 - 400%)
■ n8-90: Output Control Speed Selection
No.
(Hex.)
Name Description
Default
(Range)
n8-90
(02BF)
Vout Limit Switching Speed
Sets the speed level at which output voltage limit sequence selection occurs as a percentage where
the maximum output frequency is 100%. Usually it is not necessary to change this setting.
200%
(0 - 200%)
■ n8-91: Id Limit at Voltage Saturation
No.
(Hex.)
Name Description
Default
(Range)
n8-91
(02F7)
Id Limit at Voltage
Saturation
Sets the limit value of feedback output voltage limit Id operation. Enabled when n8-87 = 0 [Output
Voltage Control Selection = Speed Feedback Form]. Usually it is not necessary to change this
setting.
-50%
(-200 - 0%)
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