107
Selection and protection of a motor
Setting
To perform tuning, set the following parameters about the motor.
For the tuning accuracy improvement, set the following parameter when the motor constant is known in advance.
Performing tuning
In the PU operation mode, press
on the operation panel.
For External operation, turn ON the start command (STF or STR signal). Tuning will start.
Pr
.
Name
Setting
80
Motor capacity
Motor capacity (kW)
81
Number of motor poles
The number of motor poles (2 to 10)
9
Electronic thermal O/L relay
Rated motor current (A)
84
Rated motor speed
Rated motor speed (r/min)
83
Rated motor voltage
Rated motor voltage (V)
71
Applied motor
8090 (IPM motor)
9090 (SPM motor)
96
Auto tuning setting/status
1
Set
Pr.71 Applied motor
according to the applied motor. (For other setting values of
Pr.71
,
.)
Pr.
Name
Setting
702
Maximum motor speed
Maximum motor speed (r/min)
707
Motor inertia (integer)
Motor inertia
Jm =
Pr.707
10^(-
Pr.724
) (kg
m
2
)
724
Motor inertia (exponent)
725
Motor protection current level
Maximum current level of the motor (%)
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.
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.
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
on the operation panel. (Turning the start signal
(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.
Summary of Contents for FR-D720-0.2K-G
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