YASKAWA GA700 Technical Manual page 612

11.3 b: Application
Increase the setting when the speed estimation value is the minimum output frequency even if the motor is
coasting at a high speed when the drive is estimating the speed during the Speed Estimation Speed Search. The
output current during speed search is automatically limited to the drive rated current.
Note:
Use the Current Detection Speed Search when the speed cannot be accurately estimated even after adjusting b3-06.
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b3-07: Speed Estimation Current Level 2
No.
Name
(Hex.)
b3-07 Speed Estimation
Current Level 2
(0197)
Increase the setting value in increments of 0.1 when the speed estimation value reaches the minimum output
frequency during Speed Estimation Speed Searches. The output current during speed search is automatically
limited to the drive rated current.
■
b3-08: Speed Estimation ACR P Gain
No.
Name
(Hex.)
b3-08 Speed Estimation
ACR P Gain
(0198)
■
b3-09: Speed Estimation ACR I Time
No.
Name
(Hex.)
b3-09 Speed Estimation
ACR I Time
(0199)
■
b3-10: Speed Estimation Detection Gain
No.
Name
(Hex.)
b3-10 Speed Estimation
Detection Gain
(019A)
Increase the setting value if ov [DC Bus Overvoltage] is detected when restarting the motor.
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b3-14: Bi-Direction Speed Search Select
No.
Name
(Hex.)
b3-14 Bi-Direction Speed
Search Select
(019E)
0 : Disabled
The drive detects the direction of motor rotation from the frequency reference.
1 : Enabled
The drive detects the direction of motor rotation during Speed Search.
612
V/f CL-V/f OLV CLV AOLV
The amount of current that flows to the motor when Speed Estimation
Speed Searches are executed is configured as a coefficient of E2-03 [Motor
No-Load Current] or E4-03 [Motor 2 Rated No-Load Current]. Normally
there is no need to change this setting.
V/f CL-V/f OLV CLV AOLV
Configures the proportional gain for the current controller used when
executing the Speed Estimation Speed Search. Adjusts the speed search
responsiveness. Normally there is no need to change this setting.
V/f CL-V/f OLV CLV AOLV
Configures the integral time for the current controller used when executing
the Speed Estimation Speed Search. Adjusts the speed search
responsiveness. Normally there is no need to change this setting.
V/f CL-V/f OLV CLV AOLV
Configures the gain used to correct frequencies estimated by the Speed
Estimation Speed Search.
V/f CL-V/f OLV CLV AOLV
Selects which direction to start Speed Estimation Speed Search, either in the
direction of the frequency reference, or the direction that the drive detected
the motor is rotating.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
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
Default Setting
(Range)
1.0
(0.0 - 3.0)
Default Setting
(Range)
A1-02 = 0 through 4:
Determined by o2-04
, A1-02 = 5, 6, or 8:
Determined by A1-02
(0.00 - 6.00)
Default Setting
(Range)
Determined by A1-02
(0.0 - 1000.0 ms)
Default Setting
(Range)
1.05
(1.00 - 1.20)
Default Setting
(Range)
Determined by A1-02
(0, 1)