Mitsubishi Electric FR-A800 Series Instruction Manual page 556

• 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 for tuning in the PU
operation mode.
• Setting offline auto tuning (Pr.96 = "1 or 11") will make pre-excitation invalid.
• 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.
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1
Operation panel (FR-DU08) display
Blinking
search engine
on the operation panel.
on the operation panel. (Turning OFF the start signal (STF signal
11
Blinking
on the operation panel during PU operation. For External operation, turn OFF
1
LCD operation panel (FR-LU08) display
AutoTune
AutoTune 12:34
TUNE
TUNE
1
--- STOP
--- STOP PU
PREV
PREV NEXT
AutoTune 12:34 AutoTune
TUNE TUNE
2
STF FWD PU STF
PREV NEXT PREV
AutoTune 12:34
AutoTune
TUNE
TUNE
3
Completed
Completed
STF STOP PU
STF STOP
PREV NEXT
PREV
5.13 (C) Motor constant parameters
1
2
3
4
5
6
7
8
11
9
12:34
11
PU
NEXT
10
12:34
12
FWD PU
NEXT
12:34
13
PU
NEXT
555
5. PARAMETERS