Mitsubishi Electric 800 Series, Instruction Manual, Page: 718 / 727

5 BCN-C22005-910
• The displays/indicator on the operation panel (FR-DU08), the parameter unit (FR-PU07), and the LCD operation panel (FR-
LU08) will change as shown below.
• When encoder position tuning ends, press on the operation panel during PU operation. In the external operation mode,
turn OFF the start signal (STF signal or STR signal).
This operation resets encoder position tuning, and the PU's monitor display returns to the normal indication. (Without this
operation, next operation cannot be started.)
NOTE
• The encoder position tuning data is stored in Pr.1105 (Pr.887) until encoder position tuning is performed again.
However, performing all parameter clear resets the tuning data.
• If encoder position tuning has ended in error (see the table below), tuning data has not been 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, tuning does not
end properly. (The tuning data have not been set.)
Perform an inverter reset and restart tuning.
• When the protective function (Encoder phase fault (E.EP)) is activated during tuning, check the wiring of the motor and the
encoder, Pr.359 (Pr.852) setting, and then perform tuning again.
• When tuning ends properly, the counter value of the offset between the motor home magnetic pole position and the encoder
home position is written in Pr.1105 (Pr.887) .
3
Polarity of frequency command under dancer control
The inverter can be operated even when the polarity of the frequency command is negative under dancer control.
Status Parameter unit (FR-PU07) display
Operation panel (FR-DU08) display/
indicator
LCD operation panel (FR-LU08) display
Setting
During tuning
Normal
completion
Pr.373 (Pr.871)
setting
Error cause Corrective actions
8 Forced end Set Pr.373 (Pr.871) = "1" and try tuning again.
9 Inverter protective function operation
Identify and remove the cause of the protective function
activation, and make the setting again.
93 The motor or the encoder is not connected.
Check the wiring of the motor and the encoder, the brake
opening, and make the setting again.
Pr. Name Initial value Setting range Description
73
T000
Analog input selection 1
0 to 7
The polarity reversible operation is disabled when the PID
manipulated amount is added to the main speed command.
10 to 17
The polarity reversible operation is enabled when the PID
manipulated amount is added to the main speed command.
STOP PU
1
READ:List
TUNE
AutoTune 12:34
TUNE
1
--- STOP PU
PREV NEXT
FWD PU
2
STF
TUNE
AutoTune 12:34
TUNE
2
STF FWD PU
PREV NEXT
STOP PU
3
STF
TUNE
COMPLETION
Blinking
AutoTune 12:34
TUNE
Completed
3
STF STOP PU
PREV NEXT
BCN-C22005-910_ENG.book 5 ページ ２０１９年１０月９日 水曜日 午前８時４２分