Mitsubishi Electric FR-A800 Series Instruction Manual page 551

 Setting
• To perform tuning, set Pr.373 (Pr.871) ="1".
 Performing tuning
• Before performing tuning, check the monitor display of the operation panel or parameter unit if the inverter is in the state ready
for tuning. The motor starts by turning ON the start command while tuning is unavailable.
• In the PU operation mode, press
In the external operation mode, turn ON the start command (STF signal or STR signal). Tuning starts.
NOTE
• The motor shaft rotates up to 2 times during tuning.
• During tuning, the monitor is displayed on the operation panel as follows.
Status
(1) Setting
(2) During tuning
(3) Normal
completion
• When encoder position tuning ends, press
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 following table), motor constants are not set.
Perform an inverter reset and perform tuning again.
Pr.373 (Pr.871)
setting
8 Forced end
9 Inverter protective function operation
93 The motor or the encoder is not connected.
• When tuning is ended forcibly by pressing
does not end properly. (The tuning data have not been set.)
Perform an inverter reset and perform tuning again.
550
5. PARAMETERS
5.13 (C) Motor constant parameters
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Operation panel (FR-DU08) display
Blinking
Error cause
search engine
on the operation panel.
LCD operation panel (FR-LU08)
display
AutoTune 12:34
TUNE
1
--- STOP PU
PREV NEXT
AutoTune 12:34
TUNE
2
STF FWD PU
PREV NEXT
AutoTune 12:34
TUNE
3
Completed
STF STOP PU
PREV NEXT
on the PU in the PU operation mode. For External operation, turn OFF
Set "1" in Pr.373 (Pr.871) and retry.
Identify and remove the cause of the protective function
activation, and make the setting again.
Check the wiring of the motor and the encoder, the brake
opening, and make the setting again.
or turning OFF the start signal (STF or STR) during tuning, the tuning
Countermeasures