Mitsubishi Electric 800 Series Instruction Manual page 31

• When encoder position tuning ends, press
OFF the start signal (STF signal or STR signal).
This operation resets the encoder position tuning, and the PU's monitor display returns to the normal indication. (Without
this operation, next operation cannot be started.)
NOTE
• The data measured once in the encoder position tuning is stored in Pr.1105, and is held until the encoder position
tuning is performed again. However, performing all parameter clear resets the tuning data.
• If the encoder position tuning has ended in error (see the table below), tuning data is not 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
does not end properly. (The tuning data have not been set.)
Perform an inverter reset and restart tuning.
• When the protective function (E.EP) is activated during tuning, check the wiring of the motor and the encoder, Pr.359
setting, and then perform tuning again.
• When the 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. For External operation, turn
Error cause
or turning OFF the start signal (STF or STR) during tuning, the tuning
Countermeasures
Set Pr.373="1" and try 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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