)
Note 2. If “0” (stall prevention during deceleration) is set in this constant, deceleration
time will be automatically lengthened to prevent overvoltage.
Explanation of Stall Prevention during Deceleration
Output
frequency
Deceleration time is controlled
to prevent overvoltage
Deceleration time
(Setting)
Time
Operation after Recovery from Power Interruption
Setting range 0, 1, 2 Factory setting 0
This constant is used to select the processing to be performed after recovery from an
instantaneous power interruption.
Value Description
0 Discontinues operation.
1 Continues operation only if power interruption is within 0.5 second.
2 Continues operation unconditionally (with no error output).
Note If “1” or “2” is selected to continue operation, the Inverter automatically searches
the motor speed (even when the motor is in a free-running state) and continues
smooth operation. This function is called the speed search function.
Explanation of Speed Search Function
Motor speed
Free-running state
Inverter starts operating
Time
Carrier Frequency
Setting range 1, 2, 3, 4 Factory setting 4 (10 kHz)
This constant is used to set a pulse-width-modulated (PWM) carrier frequency.
Value Carrier frequency
1 2.5 (kHz)
2 5 (kHz)
3 7.5 (kHz)
4 10 (kHz)
Chapter 4
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