Parameter Details
12
12.2 b: APPLICATION
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual 533
• Do Speed Search with each Run Command
The drive ignores a Speed Search command from the external terminals.
• Use an MFDI to do an External Speed Search Command
To use an MFDI to do Speed Search, input the Run command at the same time that terminal DIx set for Speed
Search activates, or after Speed Search activates.
Set Speed Search to H1-xx to do the function externally. You cannot set external Speed Search 1 and 2 at the
same time.
Table 12.8 Execute Speed Search via the Digital Input Terminals
H1-xx Setting Name Current Detection 2 Speed Estimation
67 SpeedSearch Fmax ON: Speed Search starts from E1-04 [Max Output
Frequency].
External Speed Search commands 1 and 2 work the
same.
The drive estimates the motor speed, then starts Speed
Search from the estimated speed.
68 SpeedSearch Fref ON: Speed Search starts from the frequency reference
immediately before you input the Speed Search
command.
• Do Speed Search with Each Auto Restart
Set L5-01 [Auto-Reset Attempts] = 1 or more. After there is an Auto Restart fault, the drive automatically does
Speed Search.
• Do Speed Search after Momentary Power Loss
Set L2-01 =1 [RideThru@PwrLoss = Enabled], and set L2-50 = 0, 1 [RidThruMode@PwrLoss = Timer
Controlled, While CPU Active].
• Do Speed Search after You Clear the External Baseblock Command
After you clear the external baseblock command, enable the Run command, and when the output frequency is
higher than the minimum frequency, the drive does Speed Search.
■ b3-01 SpSrch@Start Selection
No.
(Hex.)
Name Description
Default
(Range)
b3-01
(0191)
SpSrch@Start Selection
Sets the Speed Search at Start function where the drive will perform Speed Search with each Run
command.
Determined by A1-02
(0, 1)
0 : Disabled
Enter a Run command to start to operate the drive at the minimum output frequency.
When the Run command is enabled and the Speed Search from Fmax or Fref [H1-xx = 67, 68] is input from a
multi-function input terminal, the drive will do Speed Search and start to operate the motor.
1 : Enabled
Enter the Run command to do Speed Search. The drive completes Speed Search then starts to operate the motor.
■ b3-02 SpSrch Deactivation Current
No.
(Hex.)
Name Description
Default
(Range)
b3-02
(0192)
SpSrch 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%)
If the drive cannot restart the motor, decrease this setting.
■ b3-03 SpSrch Deceleration Time
No.
(Hex.)
Name Description
Default
(Range)
b3-03
(0193)
SpSrch 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.
2.0 s
(0.1 - 10.0 s)
This is the output frequency deceleration time used by Current Detection Speed Search and by the Current
Injection Method of Speed Estimation Speed Search.
Note:
If the drive detects oL1 [Motor Overload] during Current Detection Speed Search, decrease the value set in b3-03.
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