5
-28
Stall Prevention: L3
Parame-
ter
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Access
Level
RS-422A/
485
Register
Page
LCD
Display
L3-01
Stall preven-
tion selection
during accel
0: Disabled (Acceleration as set.
With a heavy load, the motor
may stall.)
1: Enabled (Acceleration stop-
ped when L3-02 level is excee-
ded. Acceleration starts again
when the current is returned.)
2: Intelligent acceleration mode
(Using the L3-02 level as a
basis, acceleration is automati-
cally adjusted. Set accelera-
tion time is disregarded.)
0 to 2
1
No
A
48FH
6-19
StallP Accel
Sel
L3-02
Stall preven-
tion level dur-
ing accel
Effective when L3-01 is set to 1 or
2.
Set as a percentage of Inverter
rated current.
Usually changing this setting is
not necessary. The factory setting
reduces the set values when the
motor stalls.
0 to 200
120%
No
A
490H
6-19
StallP Accel
Lvl
L3-04
Stall preven-
tion selection
during decel
0: Disabled (Deceleration as set.
If deceleration time is too
short, a DC-Bus overvoltage
may result.)
1: Enabled (Deceleration is stop-
ped when the DC-Bus voltage
exceeds the overvoltage level.
Deceleration restarts when
voltage is returned.)
2: Intelligent deceleration mode
(Deceleration rate is automati-
cally adjusted so that in Inver-
ter can decelerate in the
shortest possible time. Set
deceleration time is disregar-
ded.)
When a braking option (Braking
Resistor Unit and Braking Unit) is
used, always set to 0.
0 to 2
1
No
Q
492H
4-7
6-21
StallP Decel
Sel
L3-05
Stall preven-
tion selection
during running
0: Disabled (Runs as set. With a
heavy load, the motor may
stall.)
1: Deceleration time 1 (the dece-
leration time for the stall pre-
vention function is C1-02.)
2: Deceleration time 2 (the dece-
leration time for the stall pre-
vention function is C1-04.)
0 to 2
1
No
A
493H
6-30
StallP Run Sel
L3-06
Stall preven-
tion level dur-
ing running
Effective when L3-05 is 1 or 2.
Set as a percentage of the Inverter
rated current.
Usually changing this setting is
not necessary.
The factory setting reduces the set
values when the motor stalls.
30 to
200
120%
No
A
494H
6-30
StallP Run
Level
