YASKAWA GA800 Technical Reference page 737

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b3-04: V/f Gain during Speed Search
No.
Name
(Hex.)
b3-04 V/f Gain during Speed
Search
(0194)
Use this formula to calculate the output voltage during Speed Search:
Output voltage during Speed Search = Configured V/f × b3-04
When the current detection search operates correctly, this configuration is not necessary.
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b3-05: Speed Search Delay Time
No.
Name
(Hex.)
b3-05 Speed Search Delay Time
(0195)
When you use a magnetic contactor between the drive and motor, you must close the contactor before the drive will
do Speed Search. This parameter sets a delay time to activate the magnetic contactor.
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b3-06: Speed Estimation Current Level 1
No.
Name
(Hex.)
b3-06 Speed Estimation Current
Level 1
(0196)
Expert
When the speed estimation value is the minimum output frequency, increase this setting. You can do this when the
motor coasts at a high speed while the drive estimates the speed during Speed Estimation Speed Search. The limit of
the output current during speed search is automatically the drive rated current.
Note:
When the drive cannot accurately estimate the speed after you adjust this parameter, use Current Detection Speed Search.
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b3-07: Speed Estimation Current Level 2
No.
Name
(Hex.)
b3-07 Speed Estimation Current
Level 2
(0197)
Expert
During Speed Estimation Speed Searches, when the speed estimation value aligns with the minimum output
frequency, increase the setting value in 0.1-unit increments. The limit of the output current during speed search is
automatically the drive rated current.
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b3-08: Speed Estimation ACR P Gain
No.
Name
(Hex.)
b3-08 Speed Estimation ACR P
Gain
(0198)
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
V/f CL-V/f OLV CLV AOLV
Sets the ratio used to reduce the V/f during searches to reduce the output current during speed
searches.
V/f CL-V/f OLV CLV AOLV
Sets the Speed Search delay time to activate a magnetic contactor installed between the drive and
motor.
V/f CL-V/f OLV CLV AOLV
Sets the level of current that flows to the motor during Speed Estimation Speed Search as a
coefficient of the motor rated current. Usually it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the level of current that flows to the motor during Speed Estimation Speed Search as a
coefficient of E2-03 [Motor No-Load Current] or E4-03 [Motor 2 Rated No-Load Current]. Usually
it is not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the proportional gain for the automatic current regulator during Speed Estimation Speed Search.
Also adjusts speed search responsiveness. Usually it is not necessary to change this setting.
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
12.3 b: Application
Default
(Range)
Determined by o2-04
(10 - 100)
Default
(Range)
0.2 s
(0.0 - 100.0 s)
Default
(Range)
Determined by o2-04
(0.0 - 2.0)
Default
(Range)
1.0
(0.0 - 3.0)
Default
(Range)
Determined by A1-02 and
o2-04
(0.00 - 6.00)
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