B.3 Parameter Table
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 387
◆ n: Special Adjustments
The n parameters are used to adjust more advanced performance characteristics such as Hunting Prevention, and High
Slip Braking.
■ n1: Hunting Prevention
■ n3: High Slip Braking (HSB) and Overexcitation Braking
■ n8: PM Motor Control Tuning
No. (Addr.) Name Description Setting Page
n1-01
(580H)
<6> Default setting value varies by the drive model (o2-04).
Hunting Prevention Selection
0: Disabled
1: Enabled
Default: 1
Min: 0
Max: 1
240
n1-02
(581H)
Hunting Prevention Gain Setting
If the motor vibrates while lightly loaded, increase the gain by 0.1 until vibration ceases. If the
motor stalls, decrease the gain by 0.1 until the stalling ceases.
Default: 1.00
Min: 0.00
Max: 2.50
240
n1-03
(582H)
Hunting Prevention Time Constant
Sets the time constant used for Hunting Prevention.
Default:
<6>
Min: 0 ms
Max: 500 ms
240
n1-05
(530H)
Hunting Prevention Gain while in
Reverse
Sets the gain used for Hunting Prevention. If set to 0, the gain set to n1-02 is used for operation
in reverse.
Default: 0.00
Min: 0.00
Max: 2.50
240
No. (Addr.) Name Description Setting Page
n3-01
(588H)
<35>
The upper limit of the setting range is determined by the values set to the carrier frequency reduction selection (L8-38).
High Slip Braking Deceleration
Frequency Width
Sets the output frequency reduction step width for when the drive stops the motor using HSB.
Set as a percentage of the maximum output frequency. Increase this setting if overvoltage
occurs during HSB.
Default: 5%
Min: 1%
Max: 20%
241
n3-02
(589H)
High Slip Braking Current Limit
Sets the current limit during HSB as a percentage of the motor rated current.
Default:
<35>
Min: 100%
Max: 200%
241
n3-03
(58AH)
High Slip Braking Dwell Time at
Stop
Sets the time the drive will run with minimum frequency (E1-09) at the end of deceleration.
If this time is set too low, the machine inertia can cause the motor to rotate slightly after HSB.
Default: 1.0 s
Min: 0.0 s
Max: 10.0 s
241
n3-04
(58BH)
High Slip Braking Overload Time
Sets the time required for an HSB overload fault (oL7) to occur when the drive output
frequency does not change during an HSB stop. This parameter does not typically require
adjustment.
Default: 40 s
Min: 30 s
Max: 1200 s
241
n3-13
(531H)
Overexcitation Deceleration Gain
Sets the gain applied to the V/f pattern during Overexcitation Deceleration (L3-04 = 4).
Default: 1.10
Min: 1.00
Max: 1.40
242
n3-21
(579H)
High-Slip Suppression Current
Level
Sets output current level at which the drive will start reducing the overexcitation gain in order to
prevent a too high motor slip during Overexcitation Deceleration. Set as a percentage of the
drive rated current.
Default: 100%
Min: 0%
Max: 150%
242
n3-23
(57BH)
Overexcitation Operation
Selection
0: Overexcitation Operation disabled
1: Overexcitation Operation as Selected in L3-04 in Forward Direction Only
2: Overexcitation Operation as Selected in L3-04 in Reverse Direction Only
Default: 0
Min: 0
Max: 2
243
No. (Addr.) Name Description Setting Page
n8-45
(538H)
Speed Feedback Detection Control
Gain
Increase this setting if hunting occurs. Decrease to lower the response.
Default: 0.80
Min: 0.00
Max: 10.00
243
n8-47
(53AH)
Pull-In Current Compensation
Time Constant
Sets the time constant to make the pull-in current reference and actual current value agree.
Decrease the value if the motor begins to oscillate, and increase the value if it takes too long for
the current reference to equal the output current.
Default: 5.0 s
Min: 0.0 s
Max: 100.0 s
243
n8-48
(53BH)
Pull-In Current
Defines the d-axis current reference during no-load operation at a constant speed. Set as a
percentage of the motor rated current. Increase this setting if hunting occurs while running at
constant speed.
Default: 30%
Min: 20%
Max: 200%
243
n8-49
(53CH)
d-Axis Current for High Efficiency
Control
Sets the d-axis current reference when running a high load at constant speed. Set as a percentage
of the motor rated current.
Default:
<14>
Min: -200.0%
Max: 0.0%
243
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OLV/PMV/f
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OLV/PMV/f
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OLV/PMV/f
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OLV/PMV/f
OLV/PMV/f
SIEP_C710616_35.book 387 ページ ２０１５年１１月３０日 月曜日 午後２時２分
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