(A) Application parameters
Outline of PLC function
● To enable the PLC function, set "1" or "2" in Pr. 414 "PLC function operation selection". When "2" is
set in Pr. 414, the sequence startup (SQ) signal from the external input terminal is valid regardless
of the setting of the Pr. 338 "Communication operation command source". (The Pr. 414 setting
change becomes valid after inverter reset.)
● Switch the execution key (RUN/STOP) of the sequence program by turning the SQ signal ON/OFF.
The sequence program can be executed by turning the SQ signal ON. To input the SQ signal, set
"50" in any of Pr. 178 to Pr. 189 (input terminal function selection) to assign the function to a
● When "1" is set in Pr. 415 "Inverter operation lock mode setting", the inverter can be operated only
when the sequence program is running. By changing the PLC program status from RUN to STOP
during inverter operation, the motor decelerates to stop.
To stop the inverter operation at the STOP status of the PLC program while performing auto
operation using SD1148 (or SM1200 to 1211) of the PLC program, set Pr. 415 = "1".
● For reading or writing sequence programs, use FR Configurator2 on the personal computer
connected to the inverter via RS-485 communication or USB. (When Pr. 414 ≠ "0", sequence
programs can be read from or written to FR Configurator2.)
For the details of the PLC function, refer to the PLC Function Programming Manual and the
Instruction Manual of FR Configurator2.
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