Omron MX2 Series - Restart Functions; Frequency Pull-In Restart

7 Other Functions
7 - 63
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
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.
Related functions of frequency pull-in
restart
Description
b001
Power Interruption/Undervolt-
age Restart Selection
(P. 7-64)
Select the restart method after the inverter shuts off its output.
b008
Overvoltage/Overcurrent
Restart Selection
(P. 7-64)
Select the restart method after the inverter shuts off its output due to
an overvoltage/overcurrent.
C103
Reset Restart Selection
(P. 5-44)
Restart after Resetting the inverter.
b088
Free-run Stop Selection
(P. 5-38)
Select the restart method after the free-run stop input signal is can-
celed (turned OFF).
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.