n
b3-01: Speed Search Selection at Start
Determines if Speed Search is automatically performed when a Run command is issued.
No.
Parameter Name
Setting Range
Default
b3-01
Speed Search Selection at Start
0, 1
Determined by
A1-02
Setting 0: Disabled
This setting starts operating the drive at the minimum output frequency when the Run command is entered. If external Speed
Search 1 or 2 is already enabled by a digital input, the drive will start operating with Speed Search.
Setting 1: Enabled
This setting performs Speed Search when the Run command is entered. The drive begins running the motor after Speed Search
is complete.
n
b3-03: Speed Search Deceleration Time
Sets the output frequency reduction ramp used by the Current Injection Method of Speed Estimation (b3-24 = 1). The time
entered into b3-03 will be the time to decelerate from maximum frequency (E1-04) to minimum frequency (E1-09).
No.
Name
Setting Range
Default
b3-03
Speed Search Deceleration Time
0.1 to 10.0 s
2.0 s
n
b3-04: V/f Gain during Speed Search (Speed Estimation Type)
During Speed Search, the output voltage calculated from the V/f pattern is multiplied with this value. Changing this value can
help reduce the output current during Speed Search.
No.
Name
Setting Range
Default
b3-04
V/f Gain during Speed Search
10 to 100%
Determined by
o2-04
n
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. This parameter can be used to delay the Speed Search operation, giving the contactor enough time to close
completely.
No.
Name
Setting Range
Default
b3-05
Speed Search Delay Time
0.0 to 100.0 s
0.2 s
n
b3-06: Output Current 1 during Speed Search (Speed Estimation Type)
Sets the current injected to the motor at the beginning of Speed Estimation Speed Search as a factor of the motor rated current
set in E2-01. 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.
No.
Name
Setting Range
Default
b3-06
Output Current 1 during Speed Search
0.0 to 2.0
Determined by
o2-04
Note:
Use Current Detection Speed Search if Speed Estimation is not working correctly even after adjusting b3-06.
n
b3-07: Output Current 2 during Speed Search (Speed Estimation Type)
Sets the amount of output current during Speed Estimation Speed Search as a coefficient for the no-load current (output current
during Speed Search is automatically limited by the drive rated current).
Increase this setting value in increments of 0.1 if the drive fails to perform Speed Estimation.
No.
Name
Setting Range
Default
b3-07
Output Current 2 during Speed Search (Speed Estimation Type)
0.0 to 5.0
1.0
1.2 b: Application
YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual
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Parameter Details
