Stall Prevention: L3 - YASKAWA VARISPEED-616G5 Instruction Manual

Stall Prevention: L3

J
Name
C Constant
Number
Display
Stall prevention
selection during accel
L3-01 L3 01
StallP Accel Sel
Stall prevention level
during accel
L3-02 L3 02
StallP Accel Lvl
Stall prevention limit
during accel
L3-03 L3 03
StallP CHP Lvl
Stall prevention
selection during decel
L3 04 L3-04
StallP Decel Sel
Stall prevention
selection during run-
ning
L3-05
StallP Run Sel
Description
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.) 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.)
Effective when L3-01 is set to 1 or
2.
Set as a percentage of Inverter
rated current.
:Usually setting is not necessary. ll i i
:
The factory setting reduces the
set values when the motor
stalls.
Sets the lower limit for stall pre-
vention during acceleration, as a
percentage of the Inverter rated
cu e t, w e ope at o s current, when operation is in the t e
f frequency range above the maxi- b h i
mum voltage frequency (E1-06.)
:Usually setting is not necessary.
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 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.)
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.
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.) C1 02 )
2: Enabled: Deceleration time 2
(the deceleration time for the
stall prevention function is
C1-04.)
8 - 37
8.2 Programming Mode Constants
Change Change
Setting S Factory during
Opera-
Range Setting
V/f
tion
B B
0 to 2 0 to 2 1 1
× ×
0 to 200 0 to 200 150 150 B B
× ×
0 to 100 0 to 100 50 50 A A
× ×
B B
0 to 3 0 to 3 1 1
× ×
0 to 2 1 B
×
Control Methods
V/f
Page
Open
Flux
with
Loop
Vector
Vector
PG
B B B B
7 - 87 7 87
× ×
B B B B 7 87 7 - 87
× ×
A A A A 7 88 7 - 88
× ×
B B B B B B
7 89 7 - 89
B 7 - 89
× ×
8