YASKAWA CIMR-G5A Series User Manual

7.5.6 Protective Functions: L
7-88
Stall Prevention Level During Acceleration: L3-02
User
Change
during
Setting
Factory
Valid Access Levels
User
Constant
Number
Name
g
during
Opera-
tion
Setting
Range
Unit
Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
L3-02
Stall prevention lev-
el during accel
×
0 to 200 % 150
B B B
×
D
This setting is valid when L3-01 is set to 1 or 2.
D
Normally it isn’t necessary to change this setting.
D
Decrease this setting when the motor capacity is small compared to the Inverter capacity or stalling
occurs when the motor is operated with the factory setting. The standard target setting is 2 to 3 times
the motor’s rated current. (Set this current value as a percentage of the Inverter’s rated current, i.e.,
100% corresponds to the Inverter’s rated current.)
Output current
Time
L3-02 (Acceleration stall prevention level)
Output frequency
Time
The output frequency is controlled to prevent stalling.
Fig 7.47 Acceleration Stall Prevention Function: L3-01 = 1
Stall Prevention Limit During Acceleration: L3-03
User
Change
during
Setting
Factory
Valid Access Levels
User
Constant
Number
Name
g
during
Opera-
tion
Setting
Range
Unit
Factory
Setting
V/f
Control
V/f with
PG
Open
Loop
Vector
Flux
Vector
L3-03
Stall prevention limit
during accel
×
0 to 100 % 50
A A A
×
D
Normally it isn’t necessary to change this setting.
D
Set this constant when a high-speed motor is being used in the high-speed range (the high frequency
range above the base frequency).
D
The standard target setting is the motor’s rated current. Set this current value as a percentage of the
Inverter’s rated current, i.e., 100% corresponds to the Inverter’s rated current.
E1-06
Base frequency (F
A
)
Acceleration stall
prevention level
L3-02
(Acceleration stall preven-
tion level)
L3-03
(Acceleration stall prevention
limit)
Output frequency
Note When the motor is used in the high-speed range, the acceleration stall prevention level
is automatically lowered to provide smoother acceleration.
The acceleration stall prevention limit (L3-03) limits how much the acceleration stall
prevention level is lowered so that it isn’t lowered any more than necessary.
Fig 7.48 Stall Prevention Limit During Acceleration
7

YASKAWA CIMR-G5A Series Specifications

General

Brand	YASKAWA
Model	CIMR-G5A Series
Category	Inverter
Language	English