Mitsubishi Electric FR-D720-0.2K-G Instruction Manual page 110

 Setting
 To perform tuning, set the following parameters about the motor.
Pr.
80 Motor capacity
81 Number of motor poles
9 Electronic thermal O/L relay
84 Rated motor speed
83 Rated motor voltage
71  Applied motor
96 Auto tuning setting/status

Set Pr.71 Applied motor according to the applied motor. (For other setting values of Pr.71, Refer to page 105.)
 For the tuning accuracy improvement, set the following parameter when the motor constant is known in advance.
Pr.
702 Maximum motor speed
707 Motor inertia (integer)
724 Motor inertia (exponent)
725 Motor protection current level

The setting is valid only when both of the Pr.707 and Pr.724 settings are other than "9999".
NOTE
 The motor constant parameters are valid for other than auto tuning.
Do not set the motor constant parameters when the S-PM geared motor is used. Doing so may cause abnormal
operation or damage the drive unit and/or the motor.
 Performing tuning
POINT
 Before performing tuning, check the monitor display of the operation panel or parameter unit if the drive unit is
in the state ready for tuning. Turning ON the start command while tuning is unavailable starts the motor.
 In the PU operation mode, press
For External operation, turn ON the start command (STF or STR signal). Tuning will start.
NOTE
 Satisfy the required drive unit start conditions to start offline auto tuning. For example, stop the input of MRS signal.
 To force tuning to end, use the MRS or RES signal or press
(STF or STR) OFF also ends tuning.)
 During offline auto tuning, only the following I/O signals are valid.
Input terminals <effective signals>: STOP, OH, MRS, RES, STF, STR, X10, and X12
Output terminals: RUN, RBP, THP, RY, Y12, MBR, FAN, FIN, Y90, Y95, REM, and LF
 When the rotation speed or the output frequency is selected for terminal FM, the progress status of offline auto
tuning is output in fifteen steps from terminal FM.
 During execution of offline auto tuning, do not switch the second function selection (RT) signal between ON and OFF.
Auto tuning is not executed properly.
 A motor with 12-pole or more cannot be tuned.
 Since the drive unit running (RUN) signal turns ON when tuning is started, pay close attention especially when a
sequence which releases a mechanical brake by the RUN signal has been designed.
 While Pr.79 Operation mode selection = "7", turn the PU operation external interlock (X12) signal ON to tune in the PU
operation mode.
Name
Motor capacity (kW)
The number of motor poles (2 to 10)
Rated motor current (A)
Rated motor speed (r/min)
Rated motor voltage (V)
8090 (IPM motor)
9090 (SPM motor)
1
Name
Maximum motor speed (r/min)
Motor inertia
Jm = Pr.707  10^(- Pr.724) (kgm
Maximum current level of the motor (%)
on the operation panel.
Selection and protection of a motor
Setting
Setting
2
)
on the operation panel. (Turning the start signal
4
107