5-58
* 1. The factory settings depend on the Inverter capacity. The values for a 200 V Class Inverter of 0.4 kW are given.
* 2. These are values for a 200 V Class Inverter. Values for a 400 V Class Inverter are double.
* 3. If the setting is 0, the axis will accelerate to the specified speed over the specified acceleration time (C1-01 to C1-08).
îš„Stall Prevention: L3
User constants for the stall prevention function are shown in the following table.
L2-06
KEB decel-
eration time
Sets in seconds the time
required to decelerate from
the speed where the deceler-
ation at momentary power
loss command (KEB) is
input to zero-speed.
0.0 to
200.0
0.0 s No A A A A 48AH -
L2-07
Momentary
recovery
time
Set in seconds the time to
accelerate to the set speed
after recovery from a
momentary power loss.
0.0 to
25.5
0.0 s
*3
NoAAAA48BH-
L2-08
Frequency
reduction
gain at KEB
start
Sets as a percent the about to
reduce the output frequency
at the beginning of decelera-
tion at momentary power
loss (KEB).
Reduction = slip frequency
before KEB operation × L2-
08 × 2
0 to
300
100% No A A A A 48CH -
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
L3-01
Stall pre-
vention
selection
during accel
0: Disabled (Acceleration as
set. With a heavy load,
the motor may stall.)
1: Enabled (Acceleration
stopped when L3-02 level
is exceeded. Acceleration
starts again when the
current is returned.)
2: Intelligent acceleration
mode (Using the L3-02
level as a basis,
acceleration is
automatically adjusted.
Set acceleration time is
disregarded.)
0 to 2 1 No A A A No 48FH
4-20
6-30
L3-02
Stall pre-
vention
level during
accel
Effective when L3-01 is set
to 1 or 2.
Set as a percentage of
Inverter rated current.
Usually setting is not neces-
sary. The factory setting
reduces the set values when
the motor stalls.
0 to
200
120%
*1
No A A A No 490H
4-20
6-30
150%
*1
Con-
stant
Number
Name Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Page
V/f
V/f
with
PG
Open
Loop
Vec-
tor
Flux
Vec-
tor
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