b
1
Bi
Directional Speed Searc
K
Selection (Speed Estimation
7
ype)
Sets how the drive determines the motor rotation direction when performing Speed Estimation Speed Search.
No
Parameter Name
Settin
J
5
an
J
e
De
I
ault
b3-14
Bi-Directional Speed Search Selection
0, 1
1
Settin
J
Disabled
The drive uses the frequency reference to determine the direction of motor rotation to restart the motor.
Settin
J
1
Enabled
The drive detects the motor rotation direction to restart the motor.
b
17
Speed Searc
K
5
estart Current Le
Y
el (Speed Estimation
7
ype)
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
Settin
J
5
an
J
e
De
I
ault
b3-17
Speed Search Restart Current Level
0 to 200%
110%
b
18
Speed Searc
K
5
estart Detection
7
ime (Speed Estimation
7
ype)
Sets the time for which the current must be above the level set in b3-17 before restarting Speed Search.
No
Name
Settin
J
5
an
J
e
De
I
ault
b3-18
Speed Search Restart Detection Time
0.00 to 1.00 s
0.10 s
b
1
Number o
I
Speed Searc
K
5
estarts (Speed Estimation
7
ype)
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
Settin
J
5
an
J
e
De
I
ault
b3-19
Number of Speed Search Restarts
0 to 10
3
b
2
Speed Searc
K
Met
K
od Selection
Sets the Speed Search method.
No
Parameter Name
Settin
J
5
an
J
e
De
I
ault
b3-24
Speed Search Method Selection
0, 1
0
Settin
J
Current Detection
Settin
J
1
Speed Estimation
Note:
Refer to Current Detection Speed Search (b3-24 = 0) on page 31
and
Refer to Speed Estimation Type Speed Search (b3-24 = 1) on page
32
for explanations of the Speed Search methods.
b
2
Speed Searc
K
:
ait
7
ime
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
Settin
J
5
an
J
e
De
I
ault
b3-25
Speed Search Wait Time
0.0 to 30.0 s
0.5 s
1
2 b
Application
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