YASKAWA VARISPEED-616G5 - Stall Prevention: L3

8.2 Programming Mode Constants
8-37
J Stall Prevention: L3
C
Name
S
Change
Control Methods
Constant
Number
Display
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
V/f
V/f
with
PG
Open
Loop
Vector
Flux
Vector
Page
L3-01
Stall prevention
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 )
0to2 1
×
B B B
×
7-87
L3 01
StallP Accel Sel
the current is returned.)
2: Intelligent acceleration mode
(Using the L3-02 level as a ba-
sis, acceleration is automati-
cally adjusted. Set acceleration
time is disregarded.)
0
to
2
1
×
B
B
B
×
7
87
L3-02
Stall prevention level
during accel
Effective when L3-01 is set to 1 or
2.
Set as a percentage of Inverter
rated current.
:
ll
i
i
0 to 200 150
×
B B B
×
7-87
L3 02
StallP Accel Lvl
:Usually setting is not necessary.
The factory setting reduces the
set values when the motor
stalls.
0
to
200
150
×
B
B
B
×
7
87
L3-03
Stall prevention limit
during accel
Sets the lower limit for stall pre-
vention during acceleration, as a
percentage of the Inverter rated
current, when operation is in the
f
b
h
i
0 to 100 50
×
A A A
×
7-88
L3 03
StallP CHP Lvl
cu e t,
we
ope at o
s
te
frequency range above the maxi-
mum voltage frequency (E1-06.)
:Usually setting is not necessary.
0
to
100
50
×
A
A
A
×
7
88
L3-04
Stall prevention
selection during decel
0: Disabled (Deceleration as set.
If deceleration time is too
short, a main circuit overvol-
tage may result.)
1: Enabled (Deceleration is
stopped when the main circuit
voltage exceeds the overvol-
tage level. Deceleration re-
starts
when
voltage
is
re
0to3 1
×
B B B B
7-89
L3 04
StallP Decel Sel
starts when voltage is re-
turned.)
2: Intelligent deceleration mode
(Deceleration rate is automati-
cally adjusted so that in Invert-
er can decelerate in the short-
est possible time. Set decelera-
tion time is disregarded.)
0
to
3
1
×
B
B
B
B
7
89
3: Enabled (with Braking Resis-
tor Unit)
:When a braking option (Brak-
ing Resistor, Braking Resistor
Unit, Braking Unit) is used, al-
ways set to 0 or 3.
L3-05
Stall prevention
selection during run-
ning
0: Disabled (Runs as set. With a
heavy load, the motor may
stall.)
1: Enabled: Deceleration time 1
(the deceleration time for the
stall prevention function is
C1 02 )
0to2 1
×
B B
× ×
7-89
StallP Run Sel
C1-02.)
2: Enabled: Deceleration time 2
(the deceleration time for the
stall prevention function is
C1-04.)
8