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• In the PU operation mode, press
For External operation, turn ON the start command (STF signal or STR signal). Tuning starts.
NOTE
• Satisfy the required inverter start conditions to start offline auto tuning. For example, stop the input of the MRS signal.
• To force tuning to end, use the MRS or RES signal or
or STR signal) also ends tuning.)
• During offline auto tuning, only the following I/O signals are valid (initial value).
Input terminals <valid signals>: STP (STOP), OH, MRS, RT, RES, STF, STR, S1, and S2
Output terminals: RUN, OL, IPF, FM/CA, AM, A1B1C1, and So (SO)
• When the rotation speed and the output frequency are selected for terminals FM/CA and AM, the progress status of offline
auto tuning is output in 15 steps from FM/CA and AM.
• Do not perform ON/OFF switching of the Second function selection (RT) signal during offline auto tuning. Auto tuning will not
be performed properly.
• A motor with 14 or more poles cannot be tuned.
• Since the Inverter running (RUN) signal turns ON when tuning is started, pay close attention especially when a sequence which
releases a mechanical brake by the RUN signal has been designed.
• When executing offline auto tuning, input the operation command after switching ON the main circuit power (R/L1, S/L2, T/L3)
of the inverter.
• While Pr.79 Operation mode selection = "7", turn ON the PU operation external interlock (X12) signal to tune in the PU
operation mode.
• During tuning, the monitor is displayed on the operation panel as follows.
Pr.96 (Pr.463)
setting
(1) Setting
(2) During tuning
(3) Normal
completion
• When offline auto tuning ends, press
the start signal (STF signal or STR signal). This operation resets the offline auto tuning, and the PU's monitor display
returns to the normal indication. (Without this operation, next operation cannot be started.)
NOTE
• The motor constants measured once during offline auto tuning are stored as parameters and their data are held until offline
auto tuning is performed again. However, the tuning data is cleared when performing All parameter clear.
• Changing Pr.71 after tuning completion will change the motor constant. For example, if the Pr.71 setting is changed to "8093"
after tuned with Pr.71 = "8090", the tuning data become invalid. To use the tuned data, set "8090" again in Pr.71.
/
on the operation panel.
1
Operation panel (FR-DU08) display
Blinking
on the operation panel during PU operation. For External operation, turn OFF
on the operation panel. (Turning OFF the start signal (STF signal
11
1
LCD operation panel (FR-LU08) display
AutoTune
TUNE
--- STOP
PREV
AutoTune
TUNE
STF
FWD
PREV
AutoTune
TUNE
Completed
STF STOP
Blinking
PREV
11
AutoTune
12:34
12:34
TUNE
11
1
--- STOP
PU
PU
PREV
NEXT
NEXT
12:34
AutoTune
12:34
TUNE
2
12
PU
STF
FWD
PU
NEXT
PREV
NEXT
12:34
AutoTune
12:34
TUNE
3
13
Completed
PU
STF STOP
PU
NEXT
PREV
NEXT
5. PARAMETERS
5.10 (C) Motor constant parameters
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