N: Special Adjustments; B.10 N: Special Adjustments - YASKAWA U1000 iQpump MATRIX Drive User Manual

B.10 n: Special Adjustments

The n parameters adjust more advanced performance characteristics such as Hunting Prevention, speed feedback detection,
and Online Tuning for motor line-to-line resistance.
u
n1: Hunting Prevention
No.
(Addr. Name
Hex)
n1-01 Hunting Prevention
(0580) Selection
n1-02 Hunting Prevention Gain
(0581) Setting
n1-03 Hunting Prevention
(0582) Time Constant
n1-05 Hunting Prevention Gain
(0530) while in Reverse
n1-12 Vibration Suppression
(0B1B) Time Constant
<1> Default setting is determined by parameter o2-04, Drive Model Selection.
u
n2: Speed Feedback Detection Control (AFR) Tuning
No.
(Addr. Name
Hex)
Speed Feedback
n2-01
Detection Control
(0584)
(AFR) Gain
Speed Feedback
n2-02
Detection Control
(0585)
(AFR) Time Constant 1
u
n3: Overexcitation Braking
No.
(Addr. Name
Hex)
n3-13 Overexcitation
(0531) Deceleration Gain
u
n6: Online Tuning
No.
(Addr. Name
Hex)
n6-01 Online Tuning
(0570) Selection
n6-05
Online Tuning Gain
(05C7)
YASKAWA TOEPYAIUPW01A YASKAWA AC Drive - U1000 iQpump Matrix Drive User Manual
LCD Display
Hunt Prev Select 0: Disabled
0: Disabled 1: Enabled
1: Enabled
If the motor vibrates while lightly loaded, increase the gain by
Hunt Prev Gain 0.1 until vibration ceases. If the motor stalls, decrease the gain
by 0.1 until the stalling ceases.
Sets the time constant used for Hunting Prevention.
Hunt Prev Time
Sets the gain used for Hunting Prevention. If set to 0, the gain
Hprev Gain @Rev set to n1-02 is used for operation in reverse.
There is normally no need to change this parameter from the
VibSuppress-Time
default value.
LCD Display
OLV OLV OLV OLV
Sets the internal speed feedback detection control gain in the
AFR Gain
automatic frequency regulator (AFR).
If hunting occurs, increase the set value. If response is low,
decrease the set value.
OLV OLV OLV OLV
AFR Time
Sets the time constant used for speed feedback detection control
(AFR).
LCD Display
Sets the gain applied to the V/f pattern during Overexcitation
Hflux Brake Gain Deceleration (L3-04 = 4).
LCD Display
OLV OLV OLV OLV
0: Disabled
Online Tune Sel
1: Line-to-line resistance tuning
2: Voltage correction. Setting not possible when Energy Saving
is enabled (b8-01).
OLV OLV OLV OLV
R1 Comp Gain
Decrease this setting for motors with a relatively large rotor
time constant.
B.10 n: Special Adjustments
Description
Description
Description
Description
Values Page
Default: 1
–
Range: 0, 1
Default: 1.00
Min.: 0.00 –
Max.: 2.50
<1>
Default:
–
Min.: 0 ms
Max.: 500 ms
Default: 0.00
Min.: 0.00 –
Max.: 2.50
Default: 0 ms
Min.: 0 –
Max.: 1000
Values Page
Default: 1.00
Min.: 0.00 –
Max.: 10.00
Default: 50 ms
Min.: 0 –
Max.: 2000
Values Page
Default: 1.10
Min.: 1.00 –
Max.: 2.00
Values Page
Default: 0
–
Range: 0 to 2
B
Default: 1.0
Min.: 0.1 –
Max.: 50.0
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