Mitsubishi Electric FR-F800 Series Instruction Manual page 387

*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 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 is not
performed properly.
• For tuning accuracy improvement, set the following parameters when the motor constants are known in advance.
First motor
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 or parameter unit 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
For External operation, turn ON the start command (STF signal or STR signal). Tuning starts.
386
5. PARAMETERS
5.10 (C) Motor constant parameters
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Motor
SF-JR, SF-TH
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P, SF-TH (constant-
torque)
SF-HRCA
Others (SF-JRC, etc.)
SF-PR
—
—
Second
Name
Motor inertia (integer)
Motor inertia (exponent)
/
search engine
Motor constant
parameter mH, %, and A parameter internal
unit setting
0 (initial value) 3 (4)
20 23 (24)
40 43 (44)
0 (initial value) 3 (4)
1 13 (14)
50 53 (54)
1 13 (14)
70 73 (74)
0 (initial value) 3 (4)
1 13 (14)
Mitsubishi Electric
motor (SF-JR, SF-HR,
SF-JRCA, or SF-
HRCA)
9999 (initial value)
on the operation panel.
page 379.)
Pr.71 setting
Motor constant Motor constant
parameter Ω, mΩ, and
data setting 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) (kg·m
2
)