Mitsubishi Electric 800 Series Instruction Manual page 430

Settings
• To perform tuning, set the following parameters about the motor.
First Second
motor Pr. motor Pr.
80 453 Motor capacity
81 454 Number of motor poles
800 451 Control method selection 20
Electronic thermal O/L
9 51
relay
83 456 Rated motor voltage
84 457 Rated motor frequency
71 450 Applied motor
Auto tuning setting/
96 463
status

According to the Pr.71 setting, the range of the motor constant parameter setting values and units can be changed. Set the Pr.71 Applied motor
setting according to the motor to be used and the motor constant setting range. (For other setting values of Pr.71, refer to
Motor
parameter mH, % and
Standard motor 0 (initial value)
Constant-torque motor 1
Vector control dedicated
30
motor
Other manufacturer's
0 (initial value)
standard motor
Other manufacturer's
1
constant-torque motor
NOTE
• 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 Second
motor Pr. motor Pr.
707 744 Motor inertia (integer)
724 745 Motor inertia (exponent)

The setting is valid only when a value other than "9999" is set in both Pr.707 (Pr.744) and Pr.724 (Pr.745).
Name Initial value
9999 (V/F control)
9999 (V/F control)
Inverter rated
current
575 V
9999
0 (standard motor)
0
Pr.71 setting
Motor constant Motor constant
parameter Internal data
A unit setting
3 (4)
13 (14)
33 (34)
3 (4)
13 (14)
Name
dedicated motor
9999 (initial value)
(C) Motor constant parameters
Set the motor capacity (kW).
Set the number of motor poles (2 to 12).
Set this parameter when using vector control or Real
sensorless vector control.
Set the rated motor current (A).
Set the rated motor voltage (V) printed on the motor's
rating plate.
Set the rated motor frequency (Hz).
When the setting is "9999", the Pr.3 Base frequency
setting is used.
Set this parameter according to the motor.
Three types of motor constant setting ranges, units and
tuning data can be stored according to settings.
Set "1" or "101".
1: Performs tuning without rotating the motor. (Excitation
noise occurs at this point.)
101: Performs tuning by rotating the motor. The motor can
rotate up to the speed near the rated motor frequency.
Motor constant
parameter Ω, mΩ and
setting A unit setting
―
―
―
5 (star connection motor)
6 (delta connection motor)
15 (star connection motor)
16 (delta connection motor)
Standard motor,
vector control
Motor inertia
Jm=Pr.707  10^(- Pr.724) (kg/m
Description

page 423.)
Other motors

2
)
PARAMETERS
5
GROUP
C
429