Mitsubishi Electric FR-A720-0.4K Instruction Manual page 507

2)Monitor is displayed on the operation panel (FR-DU07) and parameter unit (FR-PU07/FR-PU04) during
tuning as below.
Pr. 96 setting
(1) Setting
(2) Tuning in progress
(3) Normal end
(4) Error end
(when the inverter
protective function
is activated)
3)When offline auto tuning ends, press
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.)
REMARKS
· 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.
· Changing Pr. 96 setting from "3 or 13" after tuning completion will invalidate the tuning data. In this case, tune
again.
4)If offline auto tuning ended in error (see the table below), motor constants are not set.
Perform an inverter reset and restart tuning.
Error Display
8 Forced end
9 Inverter protective function operation
Converter output voltage has reached 75%
92
of rated value.
Calculation error
93
A motor is not connected.
5)When tuning is ended forcibly by pressing
tuning, offline auto tuning does not end properly. (The motor constants have not been set.)
Perform an inverter reset and restart tuning.
CAUTION
· An instantaneous power failure occurring during tuning will result in a tuning error.
After power is restored, the inverter goes into the normal operation mode. 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 ordinary mode. 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 0Hz.
Note that the motor may start running suddenly.
Parameter Unit
(FR-PU07/FR-PU04) Display
1 11
READ:List
READ:List
1
STOP PU STOP
TUNE TUNE
2
STF FWD PU STF FWD PU
TUNE
TUNE 3
COMPLETION COMPETION
STF STOP PU STF STOP PU
TUNE
9
ERROR
STOP PU
STF
Error Cause
Operation Panel (FR-DU07) Display
1
11
PU
12
13
of the operation panel during PU operation. For External
Set "1" or "11" in Pr. 96 and perform tuning again.
Make setting again.
Check for fluctuation of power supply voltage.
Check the motor wiring and make setting again.
or turning OFF the start signal (STF or STR) during
CAUTION
10/24
11
Flickering
Remedy
BCN-C22005-634
Flickering