Mitsubishi Electric FR-A820-00046 Instruction Manual page 31

• When encoder position tuning ends, press
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 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.
Pr.373 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
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 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.
on the operation panel during PU operation. In the external operation
Error cause
or turning OFF the start signal (STF or STR) during tuning, tuning does
Corrective actions
Set Pr.373 = "1" and try tuning again.
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.
VECTOR CONTROL
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