Mitsubishi Electric FR-D720S SC EC, Instruction Manual, Page: 122 / 512

Simple mode parameter list Basic settings
5 - 14
5.1.8 To exhibit the best performance of the motor performance
(offline auto tuning) (Pr. 9, Pr. 71, Pr. 80, Pr. 82 to Pr. 84, Pr. 90, Pr. 96)
The motor performance can be maximized with offline auto tuning.
What is offline auto tuning?
When performing general-purpose magnetic flux vector control, the motor can be run with the
optimum operating characteristics by automatically measuring the motor constants (offline auto
tuning) even when each motor constants differs, other manufacturer's motor is used, or the wir-
ing length is long.
The above parameters can be set when Pr. 160 = 0.
Refer to appendix A for the rated inverter output current.
Pr.
No.
Name
Initial
Value
Setting Range Description
9
Electronic thermal
O/L relay Rated inverter
output current
0–500 A Set the rated motor current.
71
Applied motor 0 0/1/3/13/23/40/43/50/53
By selecting a standard motor or constant-
torque motor, thermal characteristic and
motor constants of each motor are set.
80
Motor capacity 9999
0,1–7.5kW Applied motor capacity.
9999 V/f control
82
Motor excitation
current
9999
0–500A
Set motor excitation current
(no load current).
9999
Uses the Mitsubishi motor (SF-JR, SF-HR,
SF-JRCA, SF-HRCA) constants.
83
Rated motor voltage
200V class 200V
0–1000V Set the rated motor voltage (V).
400V class 400V
84
Rated motor
frequency
50Hz 10–120Hz Set the rated motor frequency (Hz).
90
Motor constant (R1) 9999 0–50
Ω
/9999
Tuning data
(The value measured by offline auto tuning
is automatically set.)
9999: Uses the Mitsubishi motor (SF-JR,
SF-HR, SF-JRCA, SF-HRCA) constants.
96
Auto tuning setting/
status
0
0 Offline auto tuning is not performed
11
For general-purpose magnetic flux vector
control:
Offline auto tuning is performed without
motor running (motor constant R1 only)
21
Offline auto tuning for V/f control
(automatic restart after instantaneous power
failure (with frequency search)) (refer to
section 6.11.1)