YASKAWA CIMR-F7Z44P0 User Manual page 117

If L3-01= "2: Intelligent", the intelligent stall prevention is enabled. The active acceleration time is ignored and the Drive will
attempt to accelerate as quickly as possible without exceeding the L3-02 output current level.
IMPORTANT
Stall Prevention during Acceleration is not effective when the output frequency is less than 6Hz.
The following figure demonstrates acceleration when L3-01= "1: General Purpose".
Output
Frequency
Output
Current
The L3-02 parameter is set as a percentage of the Drive rated output current. If the motor capacity is small compared to the
Drive's capacity, or if the motor stalls during acceleration, lower the set value of L3-02.
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Stall level during
acceleration
-15%
Output frequency
Output frequency is controlled
to prevent the motor stalling.
Fig 5.32 Detailed Time Chart for Stall Prevention During Acceleration
a
a
Fig 5.33 Time Chart for Stall Prevention During Acceleration
Programming 5 - 42
t
b b
L3-02
TIME
t
Output Current
Time
Time
a - Set accel time
b - Accel time is extended