Parameter List
11
11.5 b: Application
YASKAWA SIEPC71061705H GA700 Series Technical Manual 483
◆ b3: Speed Search
No.
(Hex.)
Name Description
Default
(Range)
Ref.
b3-01
(0191)
Speed Search at Start
Selection
Sets the Speed Search at Start function so the drive will do Speed Search with each Run
command.
0 : Disable
1 : Enabled
Determined by A1-02
(0, 1)
660
b3-02
(0192)
SpeedSearch
Deactivation Current
Sets the current level that stops Speed Search as a percentage of the drive rated output
current. Usually it is not necessary to change this setting.
Determined by A1-02
(0 - 200%)
661
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)
661
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)
661
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)
661
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)
661
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)
662
b3-08
(0198)
Expert
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)
662
b3-09
(0199)
Expert
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
(0.0 - 1000.0 ms)
662
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)
662
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 : Disable
1 : Enabled
Note:
• The initial value of b3-14 is different for different A1-02 [Control Method
Selection] settings when you set these parameters:
–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 different for different A1-02 [Control Method
Selection] settings when you set these parameters:
–A1-02 = 1, 4, 8 [CL-V/f, AOLV, EZOLV]
–E9-01 = 1, 2 [Permanent Magnet (PM), Synchronous Reluctance (SynRM)]
• 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]
• When you set A1-02, b3-24, and E9-01, set b3-14.
Determined by A1-02,
b3-24, and E9-01
(0, 1)
662
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%)
663
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)
663
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)
663
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