Mitsubishi Electric 800 Series Instruction Manual page 303

*2 Set Pr.71 Applied motor according to the motor to be used and the motor constant setting range. According to the Pr.71 setting, the range of
the motor constant parameter setting values and units can be changed. (For other setting values of Pr.71, refer to
Mitsubishi Electric standard
efficiency motor
Mitsubishi Electric high-
efficiency motor
Mitsubishi Electric constant-
torque motor
Mitsubishi Electric high-
performance energy-saving
motor
Other manufacturer's
standard motor
Other manufacturer's
constant-torque motor
NOTE
• When Pr.11 DC injection brake operation time = "0" or Pr.12 DC injection brake operation voltage = "0", offline auto
tuning is performed at the initial setting of Pr.11 or Pr.12.
• If "wye connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control and Real
sensorless vector control are not performed properly.
• For tuning accuracy improvement, set the following parameters when the motor constants are known in advance.
First motor Second
Pr. motor Pr.
707 744
724 745
*3 The setting is valid only when a value other than "9999" is set in both Pr.707 (Pr.744) and Pr.724 (Pr.745).
 Performing tuning
• Before performing tuning, check the monitor display of the operation panel 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 the RUN key on the operation panel.
In the External operation, turn ON the start command (STF signal or STR signal). Tuning starts.
302
13. (C) Motor Constant Parameters
13.2 Offline auto tuning
Motor
SF-JR
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P
SF-HRCA
Others (SF-JRC, etc.)
SF-PR
—
—
Name
Motor inertia (integer)
Motor inertia (exponent)
Motor constant Motor constant
parameter mH, %, parameter internal
and A unit setting data setting
0 (initial value) 3
20 23
40 43
0 (initial value) 3
10 13
50 53
10 13
70 73
0 (initial value) 3
10 13
Mitsubishi Electric motor
(SF-PR, SF-JR, SF-HR, SF-
JRCA, SF-HRCA)
9999 (initial value)
page 294.)
Pr.71 setting
Motor constant parameter
Ω, mΩ, and A unit setting
—
—
—
—
—
—
—
—
5 (wye connection motor)
6 (delta connection motor)
15 (wye connection motor)
16 (delta connection motor)
Other motors
*3
Motor inertia Jm = Pr.707 × 10^(-Pr.724)
2
(kg·m )