Fuji Electric Frenic Mega Series - Page 171

4.1 Test Run
4-20
 Tuning procedure
(1) Selection of tuning type
Check the situation of the machinery and select "Tuning with the motor stopped (P04
*
= 1)" or "Tuning with
the motor running (P04
*
= 2)." For the latter tuning, adjust the acceleration and deceleration times (F07 and
F08) and specify the rotation direction that matches the actual rotation direction of the machinery.
Table 4.1-17
P04
*
data
Tuning type
Motor parameters subject
to tuning
Tuning
Select under the
following conditions
1
Tune while the
motor stops
Primary resistance (%R1) (P07
*
)
Leakage reactance (%X) (P08
*
)
Rated slip frequency (P12
*
)
%X correction factor 1 and 2
(P53
*
and P54
*
)
Tuning with the motor
stopped.
Cannot rotate the
motor.
2
Tune while the
motor is rotating
under V/f
control
No-load current (P06
*
)
Primary resistance (%R1) (P07
*
)
Leakage reactance (%X) (P08
*
)
Rated slip frequency (P12
*
)
Magnetic saturation factor 1 - 5
Extended magnetic saturation
factor a - c
(P16
*
- P23
*)
%X correction factor 1 and 2
(P53
*
and P54
*
)
Tuning the %R1 and %X,
with the motor stopped
.
Tuning the no-load
current and magnetic
saturation factor, with
the motor running at
50% of the base
frequency.
Tuning again the
rated slip frequency,
with the motor
stopped.
Can rotate the motor,
provided that it is
safe.
Note that little load
should be applied
during tuning. Tuning
with load applied
decreases the tuning
accuracy.
The tuning results of motor parameters will be automatically saved into their respective function codes.
If P04
*
tuning is performed, for instance, the tuning results will be saved into P
*
codes (Motor 1
*
parameters).
(2) Preparation of machinery
Perform appropriate preparations on the motor and its load, such as disengaging the coupling from the
motor and deactivating the safety devices.
(3) Tuning procedure
1) Set function code P04
*
to "1" or "2" and press the
key. (The blinking of 1 or 2 on the LED
monitor will slow down.)
2) Enter a run command. (The factory default is
key on the keypad for forward rotation. To switch to
reverse rotation or to select the terminal signal FWD or REV as a run command, change the data of
function code F02.)
3) The moment a run command is entered, the display of
1 or 2 lights up, and tuning starts with the
motor stopped.
(Maximum tuning time: Approx. 40 to 80 s.)
4) If P04
*
= 2, after the tuning in 3) above, the motor is accelerated to approximately 50% of the base
frequency and then tuning starts. Upon completion of measurements, the motor decelerates to a
stop.
(Estimated tuning time: Acceleration time + 20 to 75 s + Deceleration time)
5) If P04
*
= 2, after the motor decelerates to a stop in 4) above, tuning continues with the motor
stopped.
(Maximum tuning time: Approx. 40 to 80 s.)