Mitsubishi Electric FR-F820-04750 Instruction Manual page 486

(C) Motor constant parameters
NOTES The Y39 signal remains ON as long as there is second flux even after the motor is stopped.
The X28 signal is disabled while the Y39 signal is ON.
The STF and STR signals are enabled after completing tuning at start.
The Inverter running (RUN) signal is not turned ON during online auto tuning. The RUN signal is
turned ON after starting up.
It is disabled during V/F control or PM motor control.
Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) and
Pr. 190 to Pr. 196 (output terminal function selection) may affect other functions. Set parameters
after confirming the function of each terminal.
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Parameters