277
2
P
ARAM
ETE
R
PARAMETER
(2) Start-time online auto tuning from external
terminal (X28 signal, Y39 signal)
[
Pr. 95 = 1, Pr. 574 = 1
]
By turning ON the start-time tuning signal (X28)
before the start signal (STF or STR) turns ON (at a
stop), online tuning is performed and a starting delay
after start signal turns ON due to tuning can be
avoided.
Perform offline auto tuning and set [
Pr. 95 = 1
].
When the start-time tuning completion signal (Y39) is
OFF, start-time tuning with the X28 signal is
performed. Start-time tuning ends within 500ms
maximum.
When using the X28 signal, set 28 in any of [
Pr. 178 to
Pr. 189 Input terminal function selection
] to assign the
function to the input terminal.
When using 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 the
output terminal.
*1
Start-time tuning is performed when the start
signal is turned ON during zero speed control
or servo lock also.
*2
The Y39 signal is in ON status while
secondary magnetic flux exists after the
motor stop.
*3
While the Y39 signal is ON, the X28 signal is
not valid.
*4
The STF, STR signals are valid after
completion of the start-time tuning.
*5
Only the output signals below are valid
during tuning.
IPF, THP, PU, Y12, RY, ER, LF, MT, FM, AM,
A1, B1, C1, A2, B2, C2
X28 signal
Tuning status
at starting
Y39 signal
Start signal
Tune
Completion
ON
(Hz)
Output frequency
<Other operation timing chart>
X28 Signal
Tuning status
at starting
Y39 signal
Start signal
OFF
OFF
OFF
OFF
OFF
OFF
ON
Tune
Completed
Completed
Completed
ON
Tune
Completed
Completed
ON
Secondary magnetic
flux exists a few seconds
Secondary magnetic
flux exists a few seconds
Secondary magnetic
flux exists a few seconds
Secondary magnetic
flux exists a few seconds
ON
0Hz
ON
Tune
ON
Tune
ON
Tune
Completed
ON
ON
Tune
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.
Tuning is not
performed if the
Y39 signal is ON.
Tuning is performed at start when X28 signal is OFF
(even when Y39 is ON).
Time
Output
frequency
X28 Signal
Tuning status
at starting
Y39 signal
Start signal
Output
frequency
OFF
OFF
OFF
Completed
0Hz
ON
Tune
ON
Tuning is not performed at start since X28 signal
and Y39 signal are ON.
Time
X28 Signal
Tuning status
at starting
Y39 signal
Start signal
Summary of Contents for FR-A700 Series
Page 245: ...279 2 PARAMETER PARAMETER MEMO ...
Page 440: ...474 PARAMETER MEMO ...
Page 522: ...556 SELECTION MEMO ...
