4-173
Table 4.4.10 Stall prevention level
Inverter model 08-02 default value
200V class 385VDC
400V class 770VDC
Note: When using external braking (braking resistor or braking module) disable stall prevention during
deceleration (08-00 to xx1xb).
Figure 4.4.59 Stall prevention selection in deceleration
Stall prevention selection during run (08-00=x0xxb)
Stall prevention during run can only be used in V/F control mode for induction motor.
This function prevents the motor from stalling by automatically reducing the output frequency during run.
If the inverter output current rises above the level set in parameter 08-03 for the time specified in
parameter 08-22, the inverter output frequency is automatically decreased following deceleration time 1
(00-15) or deceleration time 2 (00-17).
When the inverter output current falls below the level set in parameter (08-03) minus 2%, normal operation
continues and the output frequency increases to the frequency reference using the acceleration time 1 or
acceleration time 2. Refer to the following Fig.4.4.60.
Note: The stall prevention level during run can be set by using multi-function analog input AI2 (04-05=7) or
AI3(04-10=7).
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