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4-162
15%
t
Stall prevention
08-01
Inverter
Output
Current
Output
Frequency
t
Figure 4.3.67 Stall prevention during acceleration
If the motor is used in the constant power (CH) region, the stall prevention level (08-01) is automatically reduced
to prevent the stall.
Stall prevention level during acceleration (Constant horsepower)
Stall Prev. Lev. Acceleration (CH) = Stall prevention level in acceleration (08-01) x Fbase (01-12)
Output frequency
Parameter 08-21 is the stall prevention limit value in Constant Horsepower region. Refer to Figure 4.3.68.
Constant Torque
region
Constant Horsepower
region
08-01
08-21
Output
frequency
Stall
prevention
level during
acceleration
Figure 4.3.68 Stall prevention level and limit in acceleration
Motor2 Acceleration Stall Prevention Level (08-40) and Motor2 Acceleration Stall Prevention Limit (08-41) are
Used when 03-00~03-07=40 (Switching between Motor 1/Motor 2)