User`s manual
5-52
5
* 1. The factory setting depends upon the Inverter capacity. The value for a 200 V Class Inverter of 0.4 kW is given.
* 2. These are values for a 200 V class Inverter. The value for a 400 V class Inverter is the double.
* 3. If the setting is 0, the axis will accelerate to the specified speed using the specified acceleration time (C1-01 to C1-08).
Stall Prevention: L3
L2-06
Kinetic
Energy
Buffering
deceleration
time
Sets the time required to decel-
erate from the speed where the
deceleration at momentary
power loss command (Kinetic
Energy Buffering) is input to
zero speed.
0.0 to
200.0
0.0 s No A A A No 48AH 6-127
KEB Decel
Time
L2-07
Momentary
recovery
time
Sets the time to accelerate to
the set speed after recovery
from a momentary power loss.
0.0 to
25.5
0.0 s
*3
No A A A No 48BH 6-127
UV Return
Time
L2-08
Frequency
reduction
gain at
Kinetic
Energy
Buffering
start
Sets the reduction gain of the
output frequency at the begin-
ning of deceleration at momen-
tary power loss (Kinetic
Energy Buffering).
Reduction = slip frequency
before Kinetic Energy Buffer-
ing operation × L2-08 × 2
0 to 300 100% No A A A No 48CH 6-127
KEB
Frequency
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Register
Page
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
Display
L3-01
Stall preven-
tion selec-
tion 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 has fallen below the
stall prevention level).
2: Intelligent acceleration
mode (Using the L3-02
level as a basis,
acceleration is
automatically adjusted. The
set acceleration time is
disregarded.)
0 to 2 1 No A A A No 48FH 6-22
StallP Accel
Sel
L3-02
Stall preven-
tion level
during accel
Sets the stall prevention during
acceleration operation current
level as a percentage of
Inverter rated current.
Effective when L3-01 is set to
1 or 2.
Usually changing this setting is
not necessary. Reduce the set-
ting when the motor stalls.
0 to 200
150%
*
No A A A No 490H 6-22
StallP Accel
Lvl
L3-03
Stall preven-
tion limit
during accel
Sets the lower limit for the stall
prevention during acceleration,
as a percentage of the Inverter
rated current.
Usually changing this setting is
not necessary.
0 to 100 50% No A A A No 491H 6-22
StallP CHP
Lvl
Param-
eter
Num-
ber
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO-
BUS
Register
Page
V/f
V/f
with
PG
Open
Loop
Vector
Closed
Loop
Vector
Display