6-45
Explanation of Settings
Set value Contents
0 Speed search disabled: Motor starts from minimum output frequency.
1 Speed search enabled: Speed search is performed from maximum output frequency and
motor is started. (In control modes with PG, i.e., V/f with PG and flux vector, motor starts
from the motor speed.)
Set
“1” to use the speed search function. T
o use speed search freely in
control modes without PG, i.e.,
V/f
control and open-loop
vector control, set the multi-function contact input selection (H1-01 to H1-06)
to 61 or 62 (external search command).
Parameter Display name Setting Units Default
Valid access levels
number
range setting
V/f
Control
V/f with
PG
Open Loop
Vector
Flux
Vector
b3-02 Spd Srch Current 0 to 200 % 100 Ad-
vanced
--- Advanced ---
b3-03 Spd Srch Dec
Time
0.1 to
10.0
Sec 2.0 Ad-
vanced
--- Advanced ---
L2-03 PwrL Baseblock t 0.0 to
0.5
Sec 0.5 (see
note)
Basic or Advanced
These parameters cannot be changed during operation.
Note The
factory-set default varies depending on the Inverter capacity
. The values shown in the table
are for 200-V class, 0.4-kW.
• For
the speed search operating current (b3-02), set the operating current for the speed search. If re
-
starting is not possible with the set value, then lower the set value. Set the speed search operating
current
as a percentage of the Inverter
’
s rated output current, with the Inverter
’
s rated output current
taken as 100%.
• For
the speed search
deceleration time (b3-03), set the output frequency deceleration time for while
the speed search is being performed.
• When
the speed
search and DC injection braking are set, set the minimum baseblock time (L2-03).
For
the minimum baseblock time, set the time to wait for the motor
’
s residual voltage to dissipate. If an
overcurrent
is detected when starting a speed search
or DC injection braking, raise the set value to
prevent a fault from occurring.
Speed Search Timing Chart
Run command
Maximum frequency
Output frequency
Output current
Deceleration time set for b3-03
Minimum baseblock time (L2-03)
Frequency reference
that is set
Advanced Operation Chapter
6
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