YASKAWA Varispeed G7 Series User Manual

6 -50
 Preventing Motor Stalling During Operation
Stall prevention during operation prevents the motor from stalling by automatically lowering the Inverter's
output frequency when a transient overload occurs while the motor is operating at a constant speed.
Stall prevention during operation is enabled only during V/f control. If the Inverter output current continues to
exceed the setting in constant L3-06 for 100 ms or longer, the motor speed is reduced. Set whether to enable or
disable deceleration time using constant L3-05. Set the deceleration time using C1-02 (Acceleration time 1) or
C1-04 (Acceleration Time 2).
If the Inverter output current reaches the set value in L3-06 - 2% (Inverter Rated Output Current), the motor
will accelerate again at the frequency set or the acceleration time set.
Related Constants
Con-
stant
Number
Name
Description
Setting
Range
Factory
Setting
Change
during
Opera-
tion
Control Methods
MEMO
BUS
Regis-
ter
Display
V/f
V/f
with
PG
Open
Loop
Vector
1
Flux
Vec-
tor
Open
Loop
Vector
2
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
deceleration time for the stall
prevention function is C1-02.)
2: Deceleration time 2 (the
deceleration time for the stall
prevention function is C1-04.)
0 to 2 1 No A A No No No 493H
StallP Run Sel
L3-06
Stall preven-
tion level
during running
Effective when L3-05 is 1 or 2.
Set as a percentage of the Inverter
rated current.
Usually setting is not necessary.
The factory setting reduces the set
values when the motor stalls.
30 to
200
160% No A A No No No 494H
StallP Run
Level
TOE-S616-60.1.book 50 ページ ２０１７年８月４日 金曜日 午後３時４１分

YASKAWA Varispeed G7 Series Specifications

General

Brand	YASKAWA
Model	Varispeed G7 Series
Category	Inverter
Language	English