n
b3-17: Speed Search Restart Current Level (Speed Estimation Type)
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. Name Setting Range Default
b3-17 Speed Search Restart Current Level 0 to 200% 150%
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. 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 (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.
No. Name Setting Range Default
b3-19 Number of Speed Search Restarts 0 to 10 3
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b3-24: Speed Search Method Selection
Sets the Speed Search method.
No. Parameter Name Setting Range Default
b3-24 Speed Search Method Selection 0, 1 0
Setting 0: Current Detection
Setting 1: Speed Estimation
Note: Refer to Current Detection Speed Search (b3-24 = 0) on page 153 and Refer to Speed Estimation Type Speed Search (b3-24 = 1) on
page 154 for explanations of the Speed Search methods.
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b3-25: Speed Search Wait Time
Sets the wait time between Speed Search restarts. Increase the wait time if problems occur with overcurrent, overvoltage, or
if the SEr fault occurs.
No. Name Setting Range Default
b3-25 Speed Search Wait Time 0.0 to 30.0 s 0.5 s
n
b3-26: Direction Determining Level
Sets the level that determines the direction of motor rotation. Increase this value if the drive fails to detect the direction of the
motor correctly.
Note: This parameter is only available in models 4A0930 and 4A1200.
No. Name Setting Range Default
b3-26 Direction Determining Level 40 to 60000
Determined by
o2-04
n
b3-27: Start Speed Search Select
Selects a condition to activate Speed Search Selection at Start (b3-01) or External Speed Search Command 1 or 2 from the
multi-function input.
No. Name Setting Range Default
b3-27 Start Speed Search Select 0, 1 0
5.2 b: Application
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
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Parameter Details
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