4-210
Figure 4.4.67 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 4.4.68.
Figure 4.4.68 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)
Stall prevention selection during deceleration (08-00=xx0xb)
Stall prevention during deceleration automatically increases the deceleration time according based on the
DC-bus voltage to prevent over-voltage during deceleration. Refer to Figure 4.4.69 for stall prevention during
deceleration
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