Parameter List
1
1.5 b: Application
YASKAWA TOEPYAIGA5002A GA500 Programming 17
No.
(Hex.)
Name Description
Default
(Range)
Ref.
b3-03
(0193)
Speed Search
Deceleration Time
Sets the deceleration time during Speed Search operation. Set the length of time to
decelerate from the maximum output frequency to the minimum output frequency.
Note:
When A1-02 = 8 [Control Method Selection = EZOLV], this parameter takes effect
only in Expert Mode.
2.0 s
(0.1 - 10.0 s)
175
b3-04
(0194)
V/f Gain during Speed
Search
Sets the ratio used to reduce the V/f during searches to reduce the output current during
speed searches.
Determined by o2-04
(10 - 100)
175
b3-05
(0195)
Speed Search Delay Time
Sets the Speed Search delay time to activate a magnetic contactor installed between the
drive and motor.
0.2 s
(0.0 - 100.0 s)
175
b3-06
(0196)
Expert
Speed Estimation Current
Level 1
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.
Determined by o2-04
(0.0 - 2.0)
175
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)
176
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)
176
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)
176
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)
176
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.
0 : Disabled
1 : Enabled
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 108.
–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 108.
When you set A1-02, b3-24, and E9-01, set b3-14.
Determined by A1-02 and
b3-24
(0, 1)
176
b3-17
(01F0)
Expert
Speed Est 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%)
177
b3-18
(01F1)
Expert
Speed Est Retry
Detection Time
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)
177
b3-19
(01F2)
Speed Search Restart
Attempts
Sets the number of times to restart Speed Search if Speed Search does not complete.
3 times
(0 - 10 times)
177
b3-24
(01C0)
Speed Search Method
Selection
Sets the Speed Search method when you start the motor or when you restore power after a
momentary power loss.
Note:
• When A1-02 = 8 [Control Method Selection = EZOLV], the default setting changes
when the setting for E9-01 [Motor Type Selection] changes.
–E9-01 = 0 [Induction (IM)]: 2
–E9-01 = 1, 2 [Permanent Magnet (PM), Synchronous Reluctance (SynRM)]: 1
• When you set b3-24, it will trigger the drive to initialize b3-14 [Bi-directional Speed
Search]. After you set b3-24, set b3-14.
1 : Speed Estimation
2 : Current Detection 2
2
(1, 2)
177
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