Mitsubishi Electric FR-F820-00077 Instruction Manual page 501

Parameters
● To use the Y39 signal, set "39 (positive logic) or 139 (negative logic)" in any of Pr. 190 to Pr. 196
(output terminal function selection) to assign function to an output terminal.
Fig. 5-143:
While the motor is stopped
ON
OFF
X28 Signal
Tune
Tuning status
Completed
at starting
Secondary magnetic
flux exists a few seconds
ON
OFF
Y39 signal
Y39 signal is OFF when the motor is stopped
and X28 is turned OFF. However if the secondary magnetic
flux exists after motor stop, the signal remains ON.
OFF
Start signal
While the X28 signal is ON
ON
OFF
X28 Signal
Tuning is not performed at start since X28 signal
and Y39 signal is ON.
Tune
Tuning status
Completed
at starting
ON
OFF
Y39 signal
OFF
Start signal
Output
frequency
0 Hz
Fig. 5-144: Timing chart of online auto tuning
FR-F800
X28 signal
Tuning status at starting
Y39 signal
Start signal
Start of online auto tuning using an external signal
ON
ON ON
Tune Tune
Completed
Completed
Secondary magnetic
flux exists a few seconds
ON ON
Tuning is not
performed if the
Y39 signal is ON.
Time
ON
Completion
Tune
While the X28 signal is OFF
Tuning is performed at start when X28 signal is OFF
ON (even when Y39 is ON).
OFF
X28 Signal
Tune
Tune
Tuning status
Completed
at starting
Secondary magnetic
flux exists a few seconds
ON
OFF
Y39 signal
OFF
Start signal
Output frequency
0 Hz
Switching motor
Motor
First motor
switching
RT signal
ON
OFF
X28 signal
Tune
Completed
Tuning status
at starting
ON
OFF
Y39 signal
ON
OFF
Start
signal
Output
frequency
0 Hz
(C) Motor constant parameters
Time
Tune
Completed Completed
Secondary magnetic
flux exists a few seconds
Second motor
First motor
Y39 turns OFF when the
driven motor is switched to
ON
the second motor
Y39 turns ON due
Secondary magnetic
to the residual second
flux exists a few seconds
magnetic flux at the
first motor.
I001557E
Time
Time
I002667E
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