
524
• Monitor is displayed on the operation panel and parameter unit during tuning as below.
• When offline auto tuning ends, press
on the operation panel during PU operation. For External operation, turn OFF
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.)
• At tuning completion, the tuning results are set in the following parameters:
NOTE
• The motor constants measured once in the offline auto tuning are stored as parameters and their data are held until the
offline auto tuning is performed again. However, the tuning data is cleared when performing all parameter clear.
• If offline auto tuning has ended in error (see the table below), motor constants are not set.
Perform an inverter reset and restart tuning.
• When tuning is ended forcibly by pressing
or turning OFF the start signal (STF or STR) during tuning, offline auto
tuning does not end properly. (The motor constants have not been set.)
Perform an inverter reset and restart tuning.
NOTE
• An instantaneous power failure occurring during tuning will result in a tuning error.
After power is restored, the inverter goes into the normal operation. Therefore, when STF (STR) signal is ON, the motor runs
in the forward (reverse) rotation.
• Any alarm occurring during tuning is handled as in the normal operation. Note that even if a retry operation has been set,
retry is not performed.
• The set frequency monitor displayed during the offline auto tuning is 0 Hz.
status
Parameter unit display
Operation panel display
Setting
Tuning in progress
Normal end
Parameter
Name
90
Motor constant (R1)
298
Frequency search gain
96
Auto tuning setting/status
Error display
Error cause
Countermeasures
8
Forced end
Set "11" to
Pr.96
and retry.
9
Inverter protective function operation
Make the setting again.
91
The current limit (stall prevention) function is activated.
Set the acceleration/deceleration time longer.
Set
Pr.156 Stall prevention operation selection
=
"1".
92
The converter output voltage fell to 75% of the rated value.
Check for the power supply voltage fluctuation.
93
Calculation error
The motor is not connected.
Check the motor wiring and make the setting again.
94
Rotation tuning frequency setting error
(The frequency command for the tuning was given to exceed
the maximum frequency setting, or to be in the frequency
jump range.)
Check the
Pr.1
Maximum frequency
and
Pr.31
to
Pr.36
Frequency jump settings.
STOP
PU
11
READ:List
TUNE
AutoTune 12:34
TUNE
11
--- STOP
PU
PREV
NEXT
FWD PU
12
STF
TUNE
AutoTune 12:34
TUNE
12
STF
FWD
PU
PREV
NEXT
STOP
PU
13
STF
TUNE
COMPLETION
AutoTune 12:34
TUNE
Completed
13
STF STOP
PU
PREV
NEXT
Summary of Contents for 800 Series
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