YASKAWA T1000V, Техническое руководство

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5.2 b: Application
YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual 119
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■ b3-04: V/f Gain During Speed Search
In order to lower the output current when performing Speed Search, this parameter determines what percentage the V/f
ratio should be reduced. The output voltage during Speed Search becomes V/f x b3-04.
■
b3-05: Speed Search Delay Time
In cases where an output contactor is used between the drive and the motor, the contactor must be closed before Speed
Search can be performed. For Speed Search after a momentary power loss, parameter b3-05 can be used to delay the
Speed Search start providing enough time to operate the contactor.
When Speed Search at start is used, b3-05 will serve as the lower limit of the minimum baseblock time (L2-03).
■ 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).
Note: If Speed Estimation is not working correctly even after adjusting b3-06, try using Current Detection Speed Search instead.
■ 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).
Note: Increase this value if overvoltage occurs when performing Speed Search at start after a relatively long period of baseblock.
■
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).
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.
No. Name Setting Range Default
b3-04 V/f Gain During Speed Search 10 to 100% 100%
No. Name Setting Range Default
b3-05 Speed Search Delay Time 0.0 to 100.0 s 0.2 s
No. Name Setting Range Default
b3-06 Output Current 1 during Speed Search 0.0 to 2.0
Determined by
o2-04 and C6-01
No. Name Setting Range Default
b3-10 Speed Search Detection Compensation Gain 1.00 to 1.20 1.05
No. Parameter Name Setting Range Default
b3-14 Bi-Directional Speed Search Selection 0 or 1 0