Mitsubishi Electric FR-A820-00046 Instruction Manual page 664

(C) Motor constant parameters
Motor
Mitsubishi standard
motor
Mitsubishi high-
efficiency motor
Mitsubishi constant-
torque motor
Mitsubishi high-
performance
energy-saving
motor
Vector control
dedicated motor
Other
manufacturer's
standard motor
Other
manufacturer's
constant-torque
motor
Tab. 5-179: Motor selection
NOTES If the SF-V5RU (other than the 1500 r/min series) is used, be sure to perform auto tuning after set-
ting "1, 13, or 14" in Pr. 71 and setting Pr. 83 and Pr. 84.
If Pr. 11 "DC injection brake operation time" = "0" or Pr. 12 "DC injection brake operation voltage" =
"0", offline auto tuning is performed considering Pr. 11 or Pr. 12 is set to the initial value.
If position control is selected (Pr. 800 = "3 or 5" (when the MC signal is OFF)), offline auto tuning is
not performed.
If "star connection" or "delta connection" is incorrectly selected in Pr. 71, Advanced magnetic flux
vector control, Real sensorless vector control and vector control are not performed normally.
● For tuning accuracy improvement, set the following parameters when the motor constants are
known in advance.
First
motor Pr.
707
724
Tab. 5-180: Parameter settings to improve the tuning accuracy
The setting is valid only when a value other than "9999" is set in both Pr. 707 (Pr. 744) and Pr. 724
(Pr. 745).
5 - 462
SF-JR and SF-TH
SF-JR 4P 1.5 kW or lower
SF-HR
Others
SF-JRCA 4P
and SF-TH (constant-torque)
SF-HRCA
Other (SF-JRC, etc.)
SF-PR
SF-V5RU (1500 r/min series)
SF-THY
SF-V5RU (other than the 1500 r/min
series)
⎯
⎯
Second
Name
motor Pr.
744 Motor inertia (integer)
745 Motor inertia (exponent)
Pr. 71 setting
Motor constant Motor constant
parameter mH, % parameter
and A unit Internal data
setting
0 (initial value)
20
40
0 (initial value)
1
50
1
70
30
1
0 (initial value)
1
Mitsubishi motor
(SF-JR, SF-HR,
Other motors
SF-JRCA, SF-HRCA,
SF-V5RU)
Motor inertia
9999 (initial value)
Jm = Pr. 707 × 10^(– Pr. 724) [kg/m
Parameters
Motor constant
parameter Ω, mΩ
and A unit setting
setting
⎯
3 (4)
⎯
23 (24)
⎯
43 (44)
⎯
3 (4)
⎯
13 (14)
⎯
53 (54)
⎯
13 (14)
⎯
73(74)
⎯
33 (34)
⎯
13 (14)
5 (star connection
motor)
3 (4)
6 (delta connection
motor)
15 (star connection
motor)
13 (14)
16 (delta connection
motor)
2
]