Parameter Details
2
2.3 b: Application
YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING 175
■ b3-07: Speed Estimation Current Level 2
No.
(Hex.)
Name Description
Default
(Range)
b3-07
(0197)
Expert
Speed Estimation Current
Level 2
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.
1.0
(0.0 - 3.0)
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.
■ b3-08: Speed Estimation ACR P Gain
No.
(Hex.)
Name Description
Default
(Range)
b3-08
(0198)
Speed Estimation ACR P
Gain
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.
Determined by A1-02 and
o2-04
(0.00 - 6.00)
■ b3-09: Speed Estimation ACR I Time
No.
(Hex.)
Name Description
Default
(Range)
b3-09
(0199)
Speed Estimation ACR I
Time
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 when
A1-02 ≠ 5
20.0 when A1-02 = 5
(0.0 - 1000.0 ms)
■ b3-10: Speed Estimation Detection Gain
No.
(Hex.)
Name Description
Default
(Range)
b3-10
(019A)
Expert
Speed Estimation Detection
Gain
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: Bi-directional Speed Search
No.
(Hex.)
Name Description
Default
(Range)
b3-14
(019E)
Bi-directional Speed 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 and
b3-24
(0, 1)
Note:
• When E9-01 = 0 [Motor Type Selection = Induction (IM)] and A1-02 = 0, 2, or 8 [Control Method Selection = V/f, OLV, or EZOLV], the
default settings change when the setting of b3-24 [Speed Search Method Selection] changes.
–b3-24 = 1 [Speed Estimation]: Refer to Parameters that Change from the Default Settings with A1-02 [Control Method Selection] on page
124.
–b3-24 = 2 [Current Detection 2]: 0
• When E9-01 = 1 or 2 [Permanent Magnet (PM), Synchronous Reluctance (SynRM)] and A1-02 = 0 or 8 [V/f, EZOLV], refer to Parameters
that Change from the Default Settings with A1-02 [Control Method Selection] on page 124.
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.
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