4-159
Please refer fig.4.3.67 for stall prevention during acceleration.
Figure 4.3.67 Stall prevention during acceleration
(4) If the motor is used in the constant power (CH) region, the stall prevention level (08-01) is
automatically reduced to prevent the stall.
(5) Stall prevention level during acceleration (Constant horsepower)
(6) Parameter 08-21 is the stall prevention limit value in Constant Horsepower region.
Please refer figure 4.3.68
Figure 4.3.68 Stall prevention level and limit in acceleration
(7) 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)
(1) Stall prevention during deceleration automatically increases the deceleration time according
based on the DC-bus voltage to prevent over-voltage during deceleration.
(2) When the DC-bus voltage exceeds the stall prevention level deceleration will stop and the
inverter will wait for the DC-bus voltage to fall below the stall prevention level before
continuing deceleration
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