5.2 b: Application
166 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
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.
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 available in models CIMR-A4A0930 and 4A1200.
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.
Setting 0: Triggered when a Run command is issued (normal).
Setting 1: Triggered when an external baseblock is released.
b3-29: Speed Search Induced Voltage Level
There is normally no need to change this parameter from the default value.
Lower this value in small increments if changes are necessary
. However, setting this value too low will prevent the drive
from performing Speed Search.
Note: This parameter is not available in models CIMR-A4A0930 and 4A1200.
b3-33: Speed Search Selection when Driving Instruction is Input in Uv
Activates or deactivates the speed search at start in accordance with whether or not a Run command was issued during an
undervoltage (Uv) if operation during a momentary power loss (L2-01 = 1 or 2), the speed search at start (b3-01 = 1), and
coasting to a stop (b1-03 = 1) are enabled.
Note: This parameter is not available in models CIMR-A4A0930 and 4A1200.
Setting 0: Speed Search disabled
Setting 1: Speed Search enabled
b4: Delay Timers
The timer function is independent of drive operation and can be used to delay the switching of a digital output triggered
by a digital input signal. An on-delay and off-delay can be separately set. The delay timer can help to get rid of chattering
switch noise from sensors.
To enable the timer function, a multi-function input
must be set to “Timer input” (H1-=18) and a multi-function
output must be set to “Timer output” (H2-=12). One timer can be used only.
No. Name Setting Range Default
b3-25 Speed Search Wait Time 0.0 to 30.0 s 0.5 s
No. Name Setting Range Default
b3-26 Direction Determining Level 40 to 60000
Determined by C6-01 and
o2-04
No. Name Setting Range Default
b3-27 Start Speed Search Select 0, 1 0
No. Name Setting Range Default
b3-29 Speed Search Induced Voltage Level 0 to 10% 10%
No. Name Setting Range Default
b3-33 Speed Search Selection when Driving Instruction is Input in Uv 0 or 1 0
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