omron — Momentary Power Interruption/Trip Retry (Restart)

4-2 Function Mode (Example 8) b004: 00 Inverter is stopped Inverter is running RUN command Power supply ON OFF ON OFF ON OFF ON OFF ON OFF RUN command Power supply ON OFF ON OFF ON OFF ON OFF ON OFF Inverter output Inverter output Alarm Alarm Signal during momentary power interruption (IP) Signal during momentary power interruption (IP) (Example 9) b004:

01 Power supply Inverter is stopped Inverter is running ON OFF ON OFF ON OFF ON OFF ON OFF Power supply ON OFF ON OFF ON OFF ON OFF ON OFF 4 RUN command Inverter output RUN command Inverter output Alarm Undervoltage Alarm Functions Signal during momentary power interruption (IP) Signal during momentary power interruption (IP) (Example 10) b004: 02 Power supply Inverter is stopped Inverter is running ON OFF ON OFF ON OFF ON OFF ON Power supply ON OFF ON OFF ON OFF ON OFF ON OFF RUN command Inverter output RUN command Inverter output Alarm Alarm Signal during momentary power interruption (IP) OFF Signal during momentary power interruption (IP) Note 1:

You can allocate the momentary power interruption signal (IP: 08) and the undervoltage signal (UV: 09) to any of multi-function output terminals P1 to P5 selection (C021 to C025) or the relay output terminal (C026). Note 2: If power interruption is retained for 1 second or longer, refer to the reset description ("Reset" (page 4-84)). „ Restarting Procedure •Frequency matching restart This method restarts the Inverter by detecting frequency and rotation direction based on the motor's residual voltage.

•Frequency pull-in restart The Inverter starts output at the frequency set in starting frequency selection b030, and searches for a point where frequency and voltage are balanced to restart the Inverter, while holding current at the frequency pull-in restart level (b028). If the Inverter trips with this method, reduce the b028 set value. 4-45