Mitsubishi Electric 800 Series Instruction Manual page 357

 Settings
• To perform tuning, set the following parameters about the motor.
First Second
motor Pr. motor Pr.
80 453
81 454
9 51
83 456
84 457
71 450
96 463
*1 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
Standard motor
Constant-torque motor
Other manufacturer's standard
motor
Other manufacturer's 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 "star connection" or "delta connection" is incorrectly selected in Pr.71, Advanced magnetic flux vector control is not
performed normally.
• 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
*2 The setting is valid only when a value other than "9999" is set in both Pr.707 (Pr.744) and Pr.724 (Pr.745).
356
5. PARAMETERS
5.10 (C) Motor constant parameters
Name
Motor capacity 9999 (V/F control)
Number of motor poles 9999 (V/F control)
Electronic thermal O/L Inverter rated
relay current
Rated motor voltage 575 V
Rated motor frequency 9999
Applied motor 0 (standard motor)
Auto tuning setting/ 0
status
Motor constant parameter
mH, % and A unit setting
0 (initial value)
1
0 (initial value)
1
Name
Motor inertia (integer)
Motor inertia (exponent)
Initial value
Set the motor capacity (kW).
Set the number of motor poles (2 to 12).
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 without rotating the motor. The motor
can rotate up to the speed near the rated motor frequency.
Pr.71 setting
Motor constant parameter
Internal data setting
3 (4)
13 (14)
3 (4)
13 (14)
Standard motor
9999 (initial value)
Motor inertia
Jm=Pr.707  10^(- Pr.724) (kg/m
Description
*1
page 351.)
Motor constant parameter Ω,
mΩ and A unit setting
―
―
5 (star connection motor)
6 (delta connection motor)
15 (star connection motor)
16 (delta connection motor)
Other motors
*2
2
)