YASKAWA V1000 Series Technical Manual page 121

No.
b3-03
Note: Even if Speed Estimation is selected, the drive will still decelerate for as long as it takes to go from the maximum frequency set to E1-04 to the mimimum frequency set to
E1-09.
b3-05: Speed Search Delay Time
n
In cases where an output contactor is used between the drive and the motor, extra waiting time is provided after power returns and before Speed Search
is performed. This extra time allows for the contactor to operate. When Speed Search at start is used, b3-05 will serve as the lower limit of the minimum
baseblock time (L2-03).
No.
b3-05
Note: When using Speed Search at start, the minimum value for the Speed Search Delay Time becomes the same value as the minimum baseblock time set to L2-03.
b3-06: Output Current 1 During Speed Search
n
Sets the coefficients related to motor current for the size of the output current during the beginning of speed search. Rated motor current is set in E2-01
and E4-01. If search speeds are extremely low in the beginning of Speed Search following a long period of baseblock, then increase the setting value (used
only in exciatiton search). The output current during Speed Search is automatically limited by the drive rated current. This function is available only when
Speed Estimation Speed Search is enabled (b3-24 = 1).
No.
b3-06
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
n
This parameter sets the gain for the frequency at which the drive starts Speed Estimation Speed Search. The drive then starts the motor at this compensated
frequency. Available only when Speed Estimation is enabled (b3-24 = 1).
No.
b3-10
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
n
The b3-14 parameter can be used to turn off the bi-directional capabilities of the Speed Estimation form of Speed Search. By turning off the bi-directional
capability, the speed search will only try to match the speed in the last known direction.
No.
b3-14
b3-17: Speed Search Restart Current Level
n
A large amount of current can end up flowing through the drive if there is a fairly large difference between the estimated frequency and the actual motor
speed when performing Speed Estimation. This parameter sets the current level at which Speed Estimation should be retried, thus avoiding overucrrent
and overvoltage problems.
Sets the speed search restart operation detection current level as a percentage of the drive rated current.
No.
b3-17
b3-18: Speed Search Restart Detection Time
n
Sets the time in seconds for how long it takes for speed search restart to be detected.
No.
b3-18
b3-19: Number of Speed Search Restarts
n
Sets the number of restarts possible for speed search restart operations.
No.
b3-19 Number of Speed Search Restarts
b3-24: Speed Search Method Selection
n
Sets the speed search method used at start up and after momentary power loss occurs.
No.
b3-24 Speed Search Method Selection
Detailed Description
0: Current Detection Speed Search
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)
Parameter Name
Speed Search Deceleration Time
Parameter Name
Speed Search Delay Time
Parameter Name
Output Current 1 during Speed Search
Name
Speed Search Detection Compensation Gain
Parameter Name
Bidirectional Speed Search Selection
Parameter Name
Speed Search Restart Current Level
Parameter Name
Speed Search Restart Detection Time
Parameter Name
Parameter Name
Setting Range
0.1 to 10.0
Setting Range
0.0 to 100.0
Setting Range
0.0 to 2.0
Setting Range
0: Disabled. Drive uses frequency reference direction.
1: Enable. Drive uses detected direction.
Setting Range
Setting Range
0.00 to 1.00
Setting Range
0 to 10
Setting Range
0: Current Detection Speed Search
1: Speed Estimation Speed Search
Default
Default
Default
Determined by o2-04
Setting Range Default
1.00 to 1.20
Default
0 to 200 150%
Default
5.2 b: Setup
2.0
0.2
1.10
Default
0
5
0.10 s
Default
3
Default
0
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