N: Advanced Performance Set-Up - YASKAWA V1000 Technical Manual

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n: Advanced Performance Set-Up

The n parameters are used to adjust more advanced performance characteristics such as hunting prevention, speed feedback
detection, high-slip braking and R1 online tuning.
No. Name
Hunting Prevention
n1-01
Selection
Hunting Prevention Gain
n1-02
Setting
Hunting Prevention Time
n1-03
Constant
Hunting Prevention Gain
n1-05
while in Reverse
Use n2 parameters to configure the Speed Feedback Detection Control function operation.
Speed Feedback Detection
n2-01
Control (AFR) Gain
Speed Feedback Detection
n2-02 Control (AFR) Time
Constant
Speed Feedback Detection
n2-03 Control (AFR) Time
Constant 2
High-Slip Braking
n3-01 Deceleration Frequency
Width
High-Slip Braking Current
n3-02
Limit
High-Slip Braking Dwell
n3-03
Time at Stop
High-Slip Braking Overload
n3-04
Time
Overexcitation Deceleration
n3-13
Gain
High-Slip Suppression
n3-21
Current Level
Overexcitation Operation
n3-23
Selection
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
n1: Hunting Prevention
Use n1 parameters to configure hunting prevention operation.
If the motor vibrates while lightly loaded, Hunting
Prevention may reduce the vibration.
0: Disabled
1: Enabled
When quick response is needed disable Hunting Prevention.
Sets the gain for the Hunting Prevention Function.
If the motor vibrates while lightly loaded and n1-01 = 1,
increase the gain by 0.1 until vibration ceases.
If the motor stalls while n1-01 = 1, decrease the gain by 0.1
until the stalling ceases.
Sets the time constant used for hunting prevention.
Sets the gain used for Hunting Prevention.
When set to 0, the gain n1-02 is used for operation in reverse
direction.
n2: Speed Feedback Detection Control Function
Sets the internal speed feedback detection control gain in the
automatic frequency regulator (AFR).
This parameter does not typically require adjustment. Adjust
this parameter as follows:
If hunting occurs, increase the set value.
If response is low, decrease the set value.
Sets the AFR time constant 1.
Sets the AFR time constant 2. Increase the setting if
overvoltage occurs during sudden load changes or the speed
overshoots during fast acceleration.
n3: High-Slip Braking
Use n3 parameters to configure the high-slip braking function.
Sets the output frequency reduction step width when the
drive stops the motor using high-slip braking (HSB).
If Overvoltage (ov) faults occur during HSB, this parameter
may need to be increased.
Sets the current limit during HSB. Higher n3-02 settings will
shorten motor stopping times but increase the motor current,
and therefore motor heating.
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 completion.
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.
Applies a gain to the V/f pattern during deceleration (L3-04
= 4). Returns to normal values after ramp to stop or at re-
acceleration.
To increase the braking power of overexcitation, increase the
gain by 1.25 to 1.30.
If overcurrent or overload occur during high-slip
deceleration, reduce the high-slip suppression current level.
Set as a percentage of the drive rated current.
0: Enabled in both directions
1: Enabled only when rotating forward
2: Enabled only when in reverse
n6: Online Tuning of Motor Line-to-Line Resistance
Use n6 parameters to adjust the motor line-to-line resistance while the drive is online.
Description
B.2 Parameter Table
Control
Mode
Range Def.
O
V/ P
L
f M
V
0, 1 1 A − −
0.00 to
1.00 A − −
2.50
<1>
0 to 500 A − −
0.00 to
0.00 A − −
2.50
0.00 to
<8>
− A −
10.00
Adjust the setting by 0.05 units at a time,
while checking the response.
0 to 2000 50 ms − A −
750
0 to 2000 − A −
ms
1 to 20 5% A − −
100 to
150% A − −
200
0.0 to
1.0 s A − −
10.0
30 to
40 s A − −
1200
1.00 to
1.10 A A −
1.40
0 to 150 100% A A −
0 to 2 0 A A −
Addr.
Pg.
Hex
580 229
581 229
582 229
530 229
584 229
585 230
586 230
588 230
589 230
58A 231
58B 231
531 231
579 231
B
57B 231
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