Parameter Details
12
12.2 b: APPLICATION
SIEPYEUOQ2A01G AC Drive Q2A Technical Manual 555
■ b3-09 Speed ACR ITime for Estimation
No.
(Hex.)
Name Description
Default
(Range)
b3-09
(0199)
Expert
Speed ACR ITime for
Estimation
Sets the integral time for the automatic current regulator during Speed Estimation Speed Search.
Also adjusts speed search responsiveness. Usually it is not necessary to change this setting.
Determined by A1-02
(0.0 - 1000.0 ms)
■ b3-10 Speed Det Gain for Estimation
No.
(Hex.)
Name Description
Default
(Range)
b3-10
(019A)
Expert
Speed Det Gain for
Estimation
Sets the gain to correct estimated frequencies from Speed Estimation Speed Search.
1.05
(1.00 - 1.20)
If the drive detects ov [DC Bus Overvoltage] when you restart the motor, increase the setting value.
■ b3-14 Speed Bi-Directional Search
No.
(Hex.)
Name Description
Default
(Range)
b3-14
(019E)
Speed Bi-Directional
Search
Sets the direction of Speed Search to the direction of the frequency reference or in the motor
rotation direction as detected by the drive.
Determined by A1-02
(0, 1)
0 : Disabled
The drive uses the frequency reference to detect the direction of motor rotation.
1 : Enabled
The drive detects the direction of motor rotation during Speed Search.
■ b3-17 Speed Retry Current Level
No.
(Hex.)
Name Description
Default
(Range)
b3-17
(01F0)
Expert
Speed Retry Current Level
Sets the current level for the search retry function in Speed Estimation Speed Search as a
percentage where drive rated current is a setting value of 100%.
150%
(0 - 200%)
When a large quantity of current flows during Speed Estimation Speed Search, the drive temporarily stops
operation to prevent overvoltage and overcurrent. When the current is at the level set in b3-17, the drive tries
speed search again.
■ b3-18 Speed Retry Delay
No.
(Hex.)
Name Description
Default
(Range)
b3-18
(01F1)
Expert
Speed Retry Delay
Sets the length of time that the drive will wait to retry Speed Estimation Speed Search when too
much current flow stopped the Speed Search.
0.10 s
(0.00 - 1.00 s)
When the current is more than the level set in b3-17 [Speed Retry Current Level] during the time set in b3-18, the
drive tries speed search again.
■ b3-19 Speed Retry Times
No.
(Hex.)
Name Description
Default
(Range)
b3-19
(01F2)
Speed Retry Times
Sets the number of times to restart Speed Search if Speed Search does not complete.
3 times
(0 - 10 times)
If the drive does the number of Speed Search restarts set in this parameter, it will trigger an SEr [Speed Search
Retries Exceeded] error.
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