Yaskawa L1000E AC Drive Technical Manual for CIMR-LE Models for Elevator Applications - Manual (Page 218)

5.8 L: Protection Functions
218 YASKAWA ELECTRIC SIEP YAIL1E 01A YASKAWA AC Drive L1000E Technical Manual
If the output current rises above the Stall Prevention level set in L3-02, then the drive stops accelerating. Acceleration will
not resume until the output current falls 15% below the setting in L3-02.
The Stall Prevention level is automatically reduced in the constant power range.
Figure 5.36
Figure 5.36 Stall Prevention During Acceleration for Induction Motors
Setting 2: Intelligent Stall Prevention
The drive disregards the selected acceleration time and attempts to accelerate in the minimum time. The acceleration rate
is adjusted so the current does not exceed the value set to parameter L3-02.
Stall Prevention Level
During Acceleration
L3-02
L3-02
-15%
Output current
Output speed
Time
Time
Controls the output speed
to prevent the motor from stalling
common_TMo