11.10 n: Special Adjustment
988 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
■ n1-05: Hunting Prevent Gain in Reverse
No.
(Hex.)
Name Description
Default
(Range)
n1-05
(0530)
Expert
Hunting Prevent Gain
in Reverse
Sets the performance of the hunting prevention function. This parameter
adjusts Reverse run. Usually it is not necessary to change this setting.
0.00
(0.00 - 2.50)
Note:
When you set this parameter to 0, the value set in n1-02 [Hunting Prevention Gain Setting] is effective when the motor rotates in
reverse.
Adjust this parameter in these conditions:
• When n1-01 = 1, 2 [Hunting Prevention Selection = Enabled (Normal), Enabled (High Carrier Frequency)]: If
oscillation occurs when you operate a motor with a light load, increase the setting value in 0.1-unit increments.
• When n1-01 = 1, 2, if the motor stalls: Decrease the setting value in 0.1-unit increments.
■ n1-08: Current Detection Method
No.
(Hex.)
Name Description
Default
(Range)
n1-08
(1105)
Expert
Current Detection
Method
Sets how the drive decreases the motor vibration that is caused by leakage
current. Usually it is not necessary to change this setting.
0
(0, 1)
0 : 2-Phases
1 : 3-Phases
Note:
Set this parameter to 1 to suppress motor vibrations caused by leakage current when the wiring distance is long.
■ n1-13: DC Bus Stabilization Control
No.
(Hex.)
Name Description
Default
(Range)
n1-13
(1B59)
Expert
DC Bus Stabilization
Control
Sets the oscillation suppression function for the DC bus voltage.
0
(0, 1)
0 : Disabled
1 : Enabled
Note:
If the DC bus voltage does not become stable with light loads and the drive detects ov [Overvoltage], set this parameter to 1.
■ n1-14: DC Bus Stabilization Time
No.
(Hex.)
Name Description
Default
(Range)
n1-14
(1B5A)
Expert
DC Bus Stabilization
Time
Sets a length of time for the drive to suppress oscillation in relation to the
DC bus voltage. Set n1-13 = 1 [DC Bus Stabilization Control = Enabled] to
enable this parameter.
100.0 ms
(50.0 - 500.0 ms)
Note:
Adjust this parameter in 100 ms increments.
■ n1-15: PWM Voltage Offset Calibration
No.
(Hex.)
Name Description
Default
(Range)
n1-15
(0BF8)
Expert
PWM Voltage Offset
Calibration
Sets the calibration method that the drive uses to decrease torque/current
ripple.
Determined by A1-02
(0 - 2)
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