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• 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 the function to an output terminal.
(Hz)
Output frequency
ON
X28signal
Tuning status
at starting
Tune
Y39signal
Start signal
While the motor is stopped
ON
X28 Signal
OFF
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
X28 Signal
OFF
Tune
Tuning status
at starting
ON
OFF
Y39 signal
OFF
Start signal
Output
frequency
0Hz
NOTE
• The Y39 signal remains ON after the motor is stopped as long as the second flux remains.
• 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.
• The setting is invalid under V/F control or PM motor control.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) or Pr.190 to Pr.196 (Output
terminal function selection) may affect the other functions. Set parameters after confirming the function of each terminal.
 Tuning the second motor (Pr.574)
• When one inverter switches the operation between two different motors, set the second motor in Pr.450 Second applied
motor. (In the initial setting, no second motor is applied. (Refer to
384
5. PARAMETERS
5.10 (C) Motor constant parameters
Completed
ON
ON
Tune
Tune
Completed
Secondary magnetic
flux exists a few seconds
ON
Tuning is not performed at start since X28 signal
and Y39 signal is ON.
Completed
Time
While the X28 signal is OFF
ON
X28 Signal
OFF
Tuning status
Completed
at starting
ON
Y39 signal
Tuning is not
performed if the
Y39 signal is ON.
Start signal
Output frequency
0Hz
Switching motor
Motor
switching
RT signal
X28 signal
Tuning status
at starting
Y39 signal
Start
signal
Output
frequency
Time
0Hz
page
Tuning is performed at start when X28 signal is OFF
ON
(even when Y39 is ON).
Tune
Tune
Completed
Completed
Secondary magnetic
flux exists
a few seconds
ON
OFF
OFF
Second motor
First motor
ON
OFF
Tune
Completed
ON
ON
OFF
Secondary magnetic
ON
flux exists
a few seconds
OFF
362.))
Tune
Completed
Secondary magnetic
flux exists a few seconds
Time
First motor
Y39 turns OFF when the
driven motor is switched
to the second motor
Y39 turns ON due
to the residual second
magnetic flux at the
first motor.
Time

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