4-25
Note 2. If “0” (stall prevention during deceleration) is set in this constant, deceleration
time will be automatically lengthened to prevent overvoltage.
Example of Stall Prevention During Deceleration
Output
frequency
Deceleration time is controlled
to prevent overvoltage
Deceleration time
(Setting)
Time
n34
Stall Prevention Level During Acceleration
Setting range 30 to 200 (%) Factory setting 170 (%)
Unit of setting 1 (%)
n35
Stall Prevention Level During Operation
Setting range 30 to 200 (%) Factory setting 160 (%)
Unit of setting 1 (%)
•These constants are used to decrease the output frequency so that the Inverter will
continue operating without stalling.
•Set the constants in percent based on the rated inverter current as 100 percent.
Example of Stall Prevention During Acceleration
Output current
Output frequency
Time
The output frequency is controlled
so that the Inverter will not stall.
Time
Preparing for Operation Chapter 4
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