Mitsubishi Electric FR-A700 Instruction Manual page 151

Basic settings
Magnetic flux observer (normal tuning) (Pr. 95 = 2)
● When exercising vector control using a motor with encoder, it is effective for torque accuracy
improvement. The current flowing in the motor and the inverter output voltage are used to
estimate/observe the magnetic flux in the motor. The magnetic flux of the motor is always
detected with high accuracy so that an excellent characteristic is provided regardless of the
change in the temperature of the secondary resistance.
● Vector control (Pr. 80, Pr. 81, Pr. 800) should be selected. (Refer to section 5.1.8).
NOTES For the SF-V5RU, SF-JR (with encoder), SF-HR (with encoder), SF-JRCA (with encoder) or
SF-HRCA (with encoder), it is not necessary to perform offline auto tuning to select adaptive
magnetic flux observer. (Note that it is necessary to perform offline auto tuning (non-rotation
mode) for the wiring length resistance to be reflected on the control when the wiring length is
long (30m or longer as reference).
Online auto tuning does not operate if the MRS signal is input, if the preset speed is less
than the Pr. 13 "Starting frequency", or if the starting conditions of the inverter are not satis-
fied, e.g. inverter error.
Online auto tuning does not operate during deceleration or at a restart during DC brake
operation.
Invalid for jog operation.
Automatic restart after instantaneous power failure overrides when automatic restart after
instantaneous power failure is selected. (Start-time online auto tuning is not performed at
frequency search.)
Perform online auto tuning at a stop with the X28 signal when using automatic restart after
instantaneous power failure together. (Refer to page 6.12.4.)
s
Zero current detection and output current detection are valid during online auto tuning.
The RUN signal is not output during online auto tuning. The RUN signal turns on at a start.
If the period from an inverter stop to a restart is within 4s, start-time tuning is performed but
the tuning results are not reflected.
FR-A700 EC
Simple mode parameter list
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