YASKAWA GA800 Technical Reference page 545

No.
Name
(Hex.)
b3-14 Bi-directional Speed
Search
(019E)
b3-17 Speed Est Retry Current
Level
(01F0)
Expert
b3-18 Speed Est Retry
Detection Time
(01F1)
Expert
b3-19 Speed Search Restart
Attempts
(01F2)
b3-24 Speed Search Method
Selection
(01C0)
b3-25 Speed Search Wait Time
(01C8)
Expert
b3-26 Direction Determination
Level
(01C7)
Expert
b3-27 Speed Search RUN/BB
Priority
(01C9)
Expert
b3-29 Speed Search Back-EMF
Threshold
(077C)
Expert
b3-31 Spd Search Current
Reference Lvl
(0BC0)
Expert
b3-32 Spd Search Current
Complete Lvl
(0BC1)
Expert
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Description
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
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%.
V/f CL-V/f OLV CLV AOLV
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.
V/f CL-V/f OLV CLV AOLV
Sets the number of times to restart Speed Search if Speed Search does not complete.
V/f CL-V/f OLV CLV AOLV
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] and the drive model change.
–E9-01 = 0 [Induction (IM)]
–2004 to 2313, 4002 to 4302, T103 to T302: 1
–2360, 2415, 4371 to 4720, T371 to T720: 2
–E9-01 = 1, 2 [Permanent Magnet (PM), Synchronous Reluctance (SynRM)]: 1
• When you set A1-02 = 8 and E9-01 = 1 or 2, also 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
V/f CL-V/f OLV CLV AOLV
Sets the length of time the drive will wait to start the Speed Search Retry function.
V/f CL-V/f OLV CLV AOLV
Sets the level to find the motor rotation direction. Increase the value if the drive cannot
find the direction.
V/f CL-V/f OLV CLV AOLV
Sets the conditions necessary to start Speed Search.
0 : SS Only if RUN Applied Before BB
1 : SS Regardless of RUN/BB Sequence
V/f CL-V/f OLV CLV AOLV
Sets the induced voltage for motors that use Speed Search. The drive will start Speed
Search when the motor induced voltage level is the same as the setting value. Usually it is
not necessary to change this setting.
V/f CL-V/f OLV CLV AOLV
Sets the current level that decreases the output current during Current Detection Speed
Search.
V/f CL-V/f OLV CLV AOLV
Sets the current level that completes Speed Search.
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
11.5 b: Application
Default
Ref.
(Range)
Determined by A1-02, 738
b3-24, and E9-01
(0, 1)
150% 738
(0 - 200%)
0.10 s 739
(0.00 - 1.00 s)
3 times 739
(0 - 10 times)
2 739
(1, 2)
0.5 s 739
(0.0 - 30.0 s)
1000 740
(40 to 60000)
0 740
(0, 1)
10% 740
(0 - 10%)
1.50 740
(1.50 - 3.50)
1.20 740
(0.00 - 1.49)
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