12.2 b: APPLICATION
462 SIEPCYEUOQ2V01A Q2V Technical Manual
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] on page 403.
–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] on page 403.
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.
■ b3-17: Speed Retry Current Level
No.
(Hex.)
Name Description
Default
(Range)
b3-17
(01F0)
Expert
Speed 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%)
When a large quantity of current flows during Speed Estimation Speed Search, the drive temporarily stops
operation to prevent overvoltage and overcurrent. When the current is at the level set in b3-17, the drive tries
speed search again.
■ b3-18: Speed Retry Delay
No.
(Hex.)
Name Description
Default
(Range)
b3-18
(01F1)
Expert
Speed Retry Delay
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)
When the current is more than the level set in b3-17 [Speed Retry Current Level] during the time set in b3-18, the
drive tries speed search again.
■ b3-19: Speed Retry Times
No.
(Hex.)
Name Description
Default
(Range)
b3-19
(01F2)
Speed Retry Times
Sets the number of times to restart Speed Search if Speed Search does not complete.
3 times
(0 - 10 times)
If the drive does the number of Speed Search restarts set in this parameter, it will trigger an SEr [Speed Search
Retries Exceeded] error.
■ b3-24: SpSrch Method Selection
No.
(Hex.)
Name Description
Default
(Range)
b3-24
(01C0)
SpSrch Method Selection
Sets the Speed Search method when you start the motor or when you restore power after a
momentary power loss.
2
(1, 2)
Note:
• When A1-02 = 8 [Control Method = EZ Vector], the default setting changes when the setting for E9-01 [Motor Type Selection]
changes.
– E9-01 = 0 [IM]: 2
– E9-01 = 1, 2 [PM, SynRM]: 1
• When you set b3-24, it will trigger the drive to initialize b3-14 [Speed Bi-Directional Search]. After you set b3-24, set b3-14.
Set b3-01 = 1 [SpSrch@Start Selection = Enabled] to do Speed Search at start. Set L2-01 = 1
[RideThru@PwrLoss = Enabled]] to do Speed Search after you restore power after a momentary power loss.
1 : Speed Estimation
The drive uses the residual voltage from a short baseblock time to estimate the motor speed.
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