Instruction manual

7. Programming Features
169
ation Time 1 (n019) and Deceleration Time 1 (n020), or for Accelera-
tion Time 2 (n021) and Deceleration Time 2 (n022).
 Stall Prevention during Operation
Stall Prevention Automatic Decrease Selection (n115)
The stall prevention level can be decreased automatically in the constant
output range.
n115 Settings
Con-
stant No.
Name Unit Setting
Range
Factory
Setting
n115 Stall Prevention Automatic
Decrease Selection
- 0=Disabled
1=Enabled
0
Setting Function
0 The stall prevention level is the level set for constant n094
in all frequency areas.
1 The following figure shows how the stall prevention level is
automatically decreased in the constant output range
(Max. frequency > Max. voltage output frequency).
The lower limit is 40% of the set value of n094.
*
1
: Decreases frequency to prevent the motor
from stalling.
*
2
: At start of acceleration, the output current
hysterisis is approx. 5% of inverter rated
current.
Motor current
Time
Time
*
1
*
2
n094
Output
frequency
100msec
Constant output area
Operation level
n094
40% of n094
n013
Output frequency
Lower limit
n094
Max. voltage output frequency n013
Operation level
Output frequency