6-68
îš„Related Constants
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
b3-01
Speed search
selection
(current
detection or
speed calcu-
lation)
Enables/disables the speed
search function for the Run
Command and sets the speed
search method.
0: Disabled, speed calculation
1: Enabled, speed calculation
2: Disabled, current detection
3: Enabled, current detection
Speed Calculation:
When the search is started, the
motor speed is calculated and
acceleration/deceleration is
performed from the calculated
speed to the specified
frequency (motor direction is
also searched).
Current Detection:
The speed search is started
from the frequency when
power was momentarily lost
and the maximum frequency,
and the speed is detected at the
search current level.
0 to 3
2
*1
No A A A No 191H
b3-02
Speed search
operating cur-
rent (current
detection)
Sets the speed search operation
current as a percentage, taking
the Inverter rated current as
100%.
Not usually necessary to set.
When restarting is not possible
with the factory settings, reduce
the value.
0 to
200
120%
*1
No A No A No 192H
b3-03
Speed search
deceleration
time (current
detection)
Sets the output frequency decel-
eration time during speed search
in 1-second units.
Set the time for deceleration
from the maximum output fre-
quency to the minimum output
frequency.
0.1 to
10.0
2.0 s No A No A No 193H
b3-05
Speed search
wait time
(current
detection or
speed calcu-
lation)
Sets the magnetic contactor
operating delay time when there
is a magnetic contactor on the
output side of the Inverter.
When a speed search is per-
formed after recovering from a
momentary power loss, the
search operation is delayed by
the time set here.
0.0 to
20.0
0.2 s No A A A A 195H
b3-10
Sets the mag-
netic flux
compensa-
tion as a per-
centage of the
no-load cur-
rent.
Operation restarts at a speed
obtained by multiplying the
speed from the speed search by
the compensation gain (excita-
tion search only.)
Increase this setting if overvolt-
ages occur when a speed search
is performed after a long base-
block, for example, in searches
at startup.
1.00 to
1.20
1.10 No A No A No 19AH
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