YASKAWA GA800 Technical Reference page 738

12.3 b: Application
■
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)
Expert
If the drive detects ov [DC Bus Overvoltage] when you restart the motor, increase the setting value.
■
b3-14: Bi-directional Speed Search
No.
Name
(Hex.)
b3-14 Bi-directional Speed Search
(019E)
Note:
• The initial value of b3-14 [Bi-directional Speed Search] is different for different A1-02 [Control Method Selection] settings when you set
these parameters: Refer to
information.
–A1-02 = 0, 2, 8 [V/f, OLV, EZOLV]
–E9-01 = 0 [Motor Type Selection = Induction (IM)]
–b3-24 = 1 [Speed Search Method Selection = Speed Estimation].
• The initial value of b3-14 is 0 when you set these parameters:
–A1-02 = 0, 2, 8
–E9-01 = 0
–b3-24 = 2 [Current Detection 2]
• The initial value of b3-14 is different for different A1-02 settings when you set these parameters: Refer to
Default Settings with A1-02 [Control Method Selection] on page 662
–A1-02 = 1, 4, 8 [CL-V/f, AOLV, EZOLV]
–E9-01 = 1, 2 [Permanent Magnet (PM), Synchronous Reluctance (SynRM)]
• When you set A1-02, b3-24, and E9-01, set b3-14.
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 Est Retry Current Level
No.
Name
(Hex.)
b3-17 Speed Est Retry Current
Level
(01F0)
Expert
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.
738
V/f CL-V/f OLV
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.
V/f CL-V/f OLV
Sets the gain to correct estimated frequencies from Speed Estimation Speed Search.
V/f CL-V/f OLV
Sets the direction of Speed Search to the direction of the frequency reference or in the motor rotation
direction as detected by the drive.
Parameters that Change from the Default Settings with A1-02 [Control Method Selection] on page 662
V/f CL-V/f OLV
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%.
Description
CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
Description
CLV AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
Description
CLV AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
for information.
Description
CLV AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Default
(Range)
Determined by A1-02 when
A1-02 ≠ 5
20.0 when A1-02 = 5
(0.0 - 1000.0 ms)
Default
(Range)
1.05
(1.00 - 1.20)
Default
(Range)
Determined by A1-02, b3-
24, and E9-01
(0, 1)
for
Parameters that Change from the
Default
(Range)
150%
(0 - 200%)