YASKAWA Z1000 CIMR-ZU*A Series Programming Manual page 35

n b3-06: Output Current 1 during Speed Search (Speed Estimation Type)
Sets the current injected to the motor at the beginning of Speed Estimation Speed Search as a factor of the motor rated current
set in E2-01. If the motor speed is relatively slow when the drive starts to perform Speed Search after a long period of baseblock,
it may be helpful to increase the setting value. The output current during Speed Search is automatically limited by the drive
rated current.
No.
b3-06
Note: Use Current Detection Speed Search if Speed Estimation is not working correctly even after adjusting b3-06.
n b3-08: Current Control Gain during Speed Search (Speed Estimation Type)
Sets the proportional gain for the current controller during Speed Search.
No.
b3-08 Current Control Gain during Speed Search (Speed Estimation Type)
n b3-10: Speed Search Detection Compensation Gain (Speed Estimation Type)
Sets the gain for the detected motor speed of the Speed Estimation Speed Search. Increase the setting only if an overvoltage
fault occurs when the drive restarts the motor.
No.
b3-10
n b3-14: Bi-Directional Speed Search Selection (Speed Estimation Type)
Sets how the drive determines the motor rotation direction when performing Speed Estimation Speed Search.
No.
b3-14
Setting 0: Disabled
The drive uses the frequency reference to determine the direction of motor rotation to restart the motor.
Setting 1: Enabled
The drive detects the motor rotation direction to restart the motor.
n b3-17: Speed Search Restart Current Level
Sets the current level at which Speed Estimation is restarted as a percentage of drive rated current to avoid overcurrent and
overvoltage problems since a large current can flow into the drive if the difference between the estimated frequency and the
actual motor speed is too big when performing Speed Estimation.
No.
b3-17
n b3-18: Speed Search Restart Detection Time (Speed Estimation Type)
Sets the time for which the current must be above the level set in b3-17 before restarting Speed Search.
No.
b3-18
n b3-19: Number of Speed Search Restarts (Speed Estimation Type)
Sets the number of times the drive should attempt to find the speed and restart the motor. If the number of restart attempts
exceeds the value set to b3-19, the SEr fault will occur and the drive will stop.
YASKAWA SIEP YAIZ1U 03B YASKAWA AC Drive – Z1000 Programming Manual
Name
Output Current 1 during Speed Search
Name
Name
Speed Search Detection Compensation Gain
Parameter Name
Bi-Directional Speed Search Selection
Name
Speed Search Restart Current Level
Name
Speed Search Restart Detection Time
1.2 b: Application
Setting Range
Determined by
0.0 to 2.0
Setting Range
Determined by
0.00 to 6.00
A1-02 and o2-04
Setting Range
1.00 to 1.20
Setting Range
0, 1
Setting Range
0 to 200%
Setting Range
0.00 to 1.00 s
Default
o2-04
Default
Default
1.05
Default
1
Default
150%
1
Default
0.10 s
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