1.5 b: Application
24 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
No.
(Hex.)
Name Description
Default
(Range)
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)
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)
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)
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)
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)
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
(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
(019A)
Expert
Speed Estimation Detection
Gain
Sets the gain to correct estimated frequencies from Speed Estimation Speed Search.
1.05
(1.00 - 1.20)
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 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 124.
When you set A1-02, b3-24, and E9-01, set b3-14.
Determined by A1-02 and
b3-24
(0, 1)
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%)
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)
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)
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 A1-02 = 8 and E9-01 = 1 or 2, set b3-24 = 1. If b3-24 = 2, the drive will detect
oPE08 [Parameter Selection Error].
• 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)
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