Stall Prevention Level
During Acceleration
L3-02
L3-02
-15%
Output current
Output frequency
Time
Time
Controls the output frequency
to prevent the motor from stalling
Figure 5.72 Stall Prevention During Acceleration for Induction Motors
Setting 2: Intelligent Stall Prevention
When L3-01 = 2, the drive will disregard the selected acceleration time and try to accelerate in the minimum time. The
acceleration rate is adjusted so that the current does not exceed the value set in parameter L3-02.
n
L3-02: Stall Prevention Level During Acceleration
Sets the output current level at which the Stall Prevention during acceleration is activated.
No. Name Setting Range Default
L3-02 Stall Prevention Level during Acceleration
0 to 150%
<1> <1>
<1> Upper limit and default value are dependent on parameter L8-38, Frequency Reduction Selection
• If stalling occurs with L3-02 set to its default value when using a motor that is relatively small compared to the drive, try
lowering L3-02.
• When operating the motor in the constant power range, also set parameter L3-03.
n
L3-03: Stall Prevention Limit During Acceleration
The Stall Prevention level is automatically reduced when the motor is operated in the constant power range. L3-03 sets the
lower limit for this reduction as a percentage of the drive rated current.
No. Name Setting Range Default
L3-03 Stall Prevention Limit during Acceleration 0 to 100% 50%
Stall Prevention level during Acceleration
Output frequency
L3-03
E1-06
Base frequency
L3-02
Figure 5.73 Stall Prevention Level and Limit During Acceleration
5.8 L: Protection Functions
198
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual
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