Parameter List
11
11.12 n: Special Adjustment
YASKAWA SIEPC71061753C GA500 Technical Manual 429
11.12 n: Special Adjustment
◆ n1: Hunting Prevention
No.
(Hex.)
Name Description
Default
(Range)
Ref.
n1-01
(0580)
Hunting Prevention
Selection
Sets the function to prevent hunting.
Note:
When you replace a V1000-series drive with a GA500 drive, set n1-01 = 1
[Hunting Prevention Selection = Enabled].
0 : Disable
1 : Enabled
0
( 0, 1 )
737
n1-02
(0581)
Expert
Hunting Prevention Gain
Setting
Sets the performance of the hunting prevention function. Usually it is not necessary to
change this parameter.
1.00
(0.00 - 2.50)
737
n1-03
(0582)
Expert
Hunting Prevention
Time Constant
Sets the primary delay time constant of the hunting prevention function. Usually it is
not necessary to change this parameter.
Determined by o2-04
(0 - 500 ms)
737
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 parameter.
0.00
(0.00 - 2.50)
737
n1-13
(1B59)
Expert
DC Bus Stabilization
Control
Sets the oscillation suppression function for the DC bus voltage.
0 : Disabled
1 : Enabled
0
(0, 1)
738
n1-14
(1B5A)
Expert
DC Bus Stabilization
Time
Adjusts the responsiveness of the oscillation suppression function for 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)
738
◆ n2: Auto Freq Regulator (AFR)
No.
(Hex.)
Name Description
Default
(Range)
Ref.
n2-01
(0584)
Automatic Freq
Regulator Gain
Sets the gain of the AFR function as a magnification value. Usually it is not necessary
to change this setting.
1.00
(0.00 - 10.00)
738
n2-02
(0585)
Automatic Freq
Regulator Time 1
Sets the time constant that sets the rate of change for the AFR function. Usually it is not
necessary to change this setting.
50 ms
(0 - 2000 ms)
738
n2-03
(0586)
Automatic Freq
Regulator Time 2
Sets the time constant that sets the speed difference of the AFR function. Use this
parameter for speed searches or regeneration. Usually it is not necessary to change this
setting.
750 ms
(0 - 2000 ms)
739
◆ n3: High Slip/Overexcite Braking
No.
(Hex.)
Name Description
Default
(Range)
Ref.
n3-01
(0588)
Expert
HSB Deceleration
Frequency Width
Sets the amount by which the output frequency is to be lowered during high-slip
braking, as a percentage of E1-04 [Maximum Output Frequency], which represents the
100% value.
5%
(1 - 20%)
740
n3-02
(0589)
Expert
HSB Current Limit
Level
Sets the maximum current output during high-slip braking as a percentage, where E2-01
[Motor Rated Current (FLA)] is 100%. Also set the current suppression to prevent
exceeding drive overload tolerance.
Note:
The upper limit to the setting range changes when the setting for C6-01 [Normal /
Heavy Duty Selection] changes.
• 150% when C6-01 = 0 [Heavy Duty Rating]
• 120% when C6-01 = 1 [Normal Duty Rating]
Determined by C6-01
(0 - 150%)
741
n3-03
(058A)
Expert
HSB Dwell Time at Stop
Sets the dwell time, a length of time when high-slip braking is ending and during which
the motor speed decreases and runs at a stable speed. For a set length of time, the drive
will hold the actual output frequency at the minimum output frequency set in E1-09.
1.0 s
(0.0 - 10.0 s)
741
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