Mitsubishi Electric FR-A820-00046 (0.4K), Instruction Manual

Page: 664 / 1218

(C) Motor constant parameters Parameters
5 - 462
●
For tuning accuracy improvement, set the following parameters when the motor constants are
known in advance.
The setting is valid only when a value other than "9999" is set in both Pr. 707 (Pr. 744) and Pr. 724
(Pr. 745).
Motor
Pr. 71 setting
Motor constant
parameter mH, %
and A unit
setting
Motor constant
parameter
Internal data
setting
Motor constant
parameter Ω, mΩ
and A unit setting
Mitsubishi standard
motor
Mitsubishi high-
efficiency motor
SF-JR and SF-TH 0 (initial value) 3 (4)
⎯
SF-JR 4P 1.5 kW or lower 20 23 (24)
⎯
SF-HR 40 43 (44)
⎯
Others 0 (initial value) 3 (4)
⎯
Mitsubishi constant-
torque motor
SF-JRCA 4P
and SF-TH (constant-torque)
1 13 (14)
⎯
SF-HRCA 50 53 (54)
⎯
Other (SF-JRC, etc.) 1 13 (14)
⎯
Mitsubishi high-
performance
energy-saving
motor
SF-PR 70 73(74)
⎯
Vector control
dedicated motor
SF-V5RU (1500 r/min series)
SF-THY
30 33 (34)
⎯
SF-V5RU (other than the 1500 r/min
series)
1 13 (14)
⎯
Other
manufacturer's
standard motor
⎯
0 (initial value) 3 (4)
5 (star connection
motor)
6 (delta connection
motor)
Other
manufacturer's
constant-torque
motor
⎯
1 13 (14)
15 (star connection
motor)
16 (delta connection
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.
First
motor Pr.
Second
motor Pr.
Name
Mitsubishi motor
(SF-JR, SF-HR,
SF-JRCA, SF-HRCA,
SF-V5RU)
Other motors
707 744 Motor inertia (integer)
9999 (initial value)
Motor inertia
Jm = Pr. 707 × 10^(– Pr. 724) [kg/m
2
] 724 745 Motor inertia (exponent)
Tab. 5-180: Parameter settings to improve the tuning accuracy