N: Special Adjustments; N: Special Adjustments; N1: Hunting Prevention; N2: Speed Feedback Detection Control (Afr) Tuning - YASKAWA U1000 Technical Manual

B.11 n: Special Adjustments
B.11 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
n1-09
Vibration Suppression
(0BAD)
Level
<2>
n1-10
(0BAE)
Suppression Frequency Suppress Frq
<2>
n1-11
Suppression Auxiliary
(0BAF)
Frequency
<2>
n1-12
Vibration Suppression
(0B1B)
Time Constant
<2>
<1> Default setting is determined by parameter o2-04, Drive Model Selection.
<2> Available in drive software versions PRG: 1017 and later.
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
558
LCD Display
V/f V/f
Hunt Prev Select
OLV/PM
0: Disabled
0: Disabled
1: Enabled
1: Enabled
V/f V/f
OLV/PM
Hunt Prev Gain
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.
V/f V/f
Hunt Prev Time
OLV/PM
Sets the time constant used for Hunting Prevention.
V/f V/f
OLV/PM
Hprev Gain @Rev
Sets the gain used for Hunting Prevention. If set to 0, the gain
set to n1-02 is used for operation in reverse.
OLV/PM OLV/PM
Vib Suppress Lvl
There is normally no need to change this parameter from the
default value.
OLV/PM OLV/PM
There is normally no need to change this parameter from the
default value.
OLV/PM OLV/PM
Suppress Sub-Frq
There is normally no need to change this parameter from the
default value.
All Modes
VibSuppress-Time
There is normally no need to change this parameter from the
default value.
LCD Display
V/f
OLV/PM
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.
V/f
OLV/PM
AFR Time
Sets the time constant used for speed feedback detection control
(AFR).
YASKAWA ELECTRIC SIEP C710636 04D U1000 Industrial MATRIX Drive Technical Manual
Description
V/f w PG V/f w PG OLV CLV
AOLV/PM CLV/PM
V/f w PG V/f w PG OLV CLV
AOLV/PM CLV/PM
V/f w PG V/f w PG OLV CLV
AOLV/PM CLV/PM
V/f w PG V/f w PG OLV CLV
AOLV/PM CLV/PM
Description
V/f w PG OLV OLV CLV
AOLV/PM CLV/PM
V/f w PG OLV OLV CLV
AOLV/PM CLV/PM
Values Page
Default: 1
334
Range: 0, 1
Default: 1.00
Min.: 0.00 334
Max.: 2.50
<1>
Default:
334
Min.: 0 ms
Max.: 500 ms
Default: 0.00
Min.: 0.00 334
Max.: 2.50
Default: 2.00
Min.: 0.00 334
Max.: 10.00
Default: 10.0 Hz
Min.: 5.0 335
Max.: 100.0
Default: 20.0 Hz
Min.: 10.0 335
Max.: 50.0
Default: 0 ms
Min.: 0 335
Max.: 1000
Values Page
Default: 1.00
Min.: 0.00 335
Max.: 10.00
Default: 50 ms
Min.: 0 335
Max.: 2000