Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 686 / 1218

(C) Motor constant parameters Parameters
5 - 484
●
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.
I001557E
Fig. 5-222: Start of online auto tuning using an external signal
I002667E
Fig. 5-223: Timing chart of online auto tuning
Output f
re
q
uenc
y
[H
z]
Time
ON
Completion
Start signal
Tune
Y39 signal
Tuning status at starting
X28 signal
While the motor is stopped
X28 Signal
Tuning status
at starting
OFF
OFF
OFF
Y39 signal
Start signal
ON ON
ON
ON
ON ON ON
Tune
Tune Tune
Completed
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.
Completed
Secondary magnetic
flux exists a few seconds Secondary magnetic
flux exists a few seconds
Completed
Tuning is not
performed if the
Y39 signal is ON.
While the X28 signal is ON
X28 Signal
Tuning status
at starting
Y39 signal
Start signal
Output
frequency
OFF
OFF
OFF
ON
ON
Tune
Tuning is not performed at start since X28 signal
and Y39 signal is ON.
Completed
0 Hz
Time
While the X28 signal is OFF
X28 Signal
Tuning status
at starting
Y39 signal
Output frequency
Start signal
OFF
OFF
OFF
ON
Tune
Tune
Tune
Tune
Completed
Completed Completed
Secondary magnetic
flux exists a few seconds
Secondary magnetic
flux exists a few seconds
0 Hz
Switching motor
First motor
Second motor
First motor
Time
ON
ON
OFF
OFF
OFF
ON
Motor
switching
RT signal
X28 signal
Tuning status
at starting
Y39 signal
Start
signal
Output
frequency
0 Hz
Secondary magnetic
flux exists a few seconds
Completed
Y39 turns OFF when the
driven motor is switched to
the second motor
ON
Y39 turns ON due
to the residual second
magnetic flux at the
first motor.
Time
ON
Tuning is performed at start when X28 signal is OFF
(even when Y39 is ON).