YASKAWA Varispeed V7 Instruction Manual page 170

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