08 - Protection Parameters
Code Parameter Name / Range
08-00 Stall prevention function.
xxx0b: Stall prevention function is enabled during acceleration.
xxx1b: Stall prevention function is disabled during acceleration.
xx0xb: Stall prevention function is enabled during deceleration.
xx1xb: Stall prevention function is disabled during deceleration.
x0xxb: Stall prevention function is enabled during operation.
x1xxb: Stall prevention function is disabled during run.
0xxxb: Stall prevention function during run is based on the first acceleration time.
1xxxb: Stall prevention function during run is based on the second acceleration time.
08-01 Stall prevention level during acceleration
20~200 %
08-02 Stall prevention level during deceleration
230V: 330V~410V
400V: 660V~820V
08-03 Stall prevention level during run
30~200 %
08-21 Limit of stall prevention during acceleration
1~100 %
08-22 Stall prevention detection time during run
2~100 msec
08-40 Motor2 Acceleration Stall Prevention Level
20~200 %
08-41 Motor2 Acceleration Stall Prevention Limit
1~100 %
Stall prevention during acceleration (08-00=xxx0b)
Prevents the inverter from faulting (Overcurrent, Motor overload, Inverter overload) when accelerating with
heavy loads.
When the inverter output current reaches the level set in parameter 08-01 minus 15% the acceleration rate
starts to decrease. When the inverter output current reaches the level set in parameter 08-01 the motor stops
accelerating. Refer to gure 4.4.67 for more information.
Notes: - Reduce stall prevention level during acceleration (08-01) in case the motor stalls (when the motor power is smaller
than the inverter rating.
- The inverter rated output current should be set to 100%.
Figure4.4.67Stallpreventionduringacceleration
15%
t
Stall prevention
08-01
Inverter
Output
Current
Output
Frequency
t
If the motor is used in the constant power (CH) region, the stall prevention level (08-01) is automatically re-
duced to prevent the stall.
202 VDI100 • Instruction manual