7-7 Restart Functions
This section describes the restart-related functions and their operations.
7-7-1 Frequency Pull-in Restart
The 3G3MX2-EV2 Series Inverter supports two restart methods, which can be selected using the follow-
ing functions.
The frequency pull-in restart is a function to restart the motor in a free-run state without stopping it.
After output is shut off, the Digital Operator displays until the inverter restarts.
⚫
Frequency pull-in restart
Frequency pull-in restart causes the inverter to restart by outputting the starting frequency set in the
Starting Frequency Selection at Frequency Pull-in Restart (b030) to the motor in a free-run stop
state. When the output current reaches the Frequency Pull-in Restart Level (b028), the inverter
decelerates according to the Frequency Pull-in Restart Parameter (b029) to suppress the output
current. Once the output frequency and the output voltage are balanced, the inverter performs nor-
mal operation.
This enables a smooth restart independent of the voltage between motor terminals.
Use this setting when the inverter is in free-run state for a long time due to a large load inertia.
In the PM motor mode, the inverter does not display “Frequency pull-in restart” for selection func-
tions.
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