
n
b3-06: Output Current 1 During Speed Search
Sets the current injected to the motor at the beginning of Estimation Type Speed Search as a factor related to motor rated
current set in E2-01 and E4-01. 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. This function has no influence when Current Detection Speed Search is
used (b3-24 = 0).
No.
Name
Setting Range
Default
b3-06
Output Current 1 during Speed Search
0.0 to 2.0
Determined by
o2-04
Note:
If Speed Estimation is not working correctly even after adjusting b3-06, try using Current Detection Speed Search instead.
n
b3-10: Speed Search Detection Compensation Gain
This parameter sets the gain for the detected motor speed of the Speed Estimation Speed Search. The drive will start the
motor at the estimated speed multiplied by b3-10. The setting should be increased if an overvoltage fault occurs when the
drive restarts the motor. This function has no influence when Current Detection Speed Search is used (b3-24 = 0).
No.
Name
Setting Range
Default
b3-10
Speed Search Detection Compensation Gain
1.00 to 1.20
1.10
Note:
Increase this value if overvoltage occurs when performing Speed Search at start after a relatively long period of baseblock.
n
b3-14: Bi-Directional Speed Search Selection
Sets how the drive determines the motor rotation direction when performing Speed Estimation Speed Search. The setting
has no influence on Current Detection Speed Search (b3-24 = 0).
No.
Parameter Name
Setting Range
Default
b3-14
Bi-Directional Speed Search Selection
0 or 1
0
Setting 0: Disabled
The drive uses the frequency reference to determine the direction of motor rotation in order to restart the motor.
Setting 1: Enabled
The drive detects the motor rotation direction in order to restart the motor.
n
b3-17: Speed Search Restart Current Level
If there is a fairly large difference between the estimated frequency and the actual motor speed when performing Speed
Estimation, a large current can flow. This parameter sets the current level at which Speed Estimation is restarted, thus
avoiding overcurrent and overvoltage problems. The parameter is set as a percentage of the drive rated current. This function
has no influence when Current Detection Speed Search is used (b3-24 = 0).
No.
Name
Setting Range
Default
b3-17
Speed Search Restart Current Level
0 to 200%
150%
n
b3-18: Speed Search Restart Detection Time
Sets the time the current must be above the level set in b3-17 before Speed Search is restarted. This function has no influence
when Current Detection Speed Search is used (b3-24 = 0)
No.
Name
Setting Range
Default
b3-18
Speed Search Restart Detection Time
0.00 to 1.00 s
0.10 s
n
b3-19: Number of Speed Search Restarts
Sets the number of times the drive should attempt to find the speed and restart the motor using Speed Estimation Speed
Search. This function has no influence when Current Detection Speed Search is used (b3-24 = 0).
No.
Name
Setting Range
Default
b3-19
Number of Speed Search Restarts
0 to 10
3
n
b3-24: Speed Search Method Selection
Sets the Speed Search method used.
Note:
For explanations of the Speed Search methods,
Refer to Current Detection Type Speed Search (b3-24 = 0) on page 111
and
Refer to
Speed Estimation Type Speed Search (b3-24 = 1) on page 110
.
No.
Parameter Name
Setting Range
Default
b3-24
Speed Search Method Selection
0 or 1
0
5.2 b: Application
114
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
7/16/2008-13:23