Fuji Electric FRENIC MEGA G2 Series - Page 156

4.8 Configuring Function Codes for Drive Controls
4-22
[ 5 ] Induction motor tuning method
If performing tuning, do so using the following procedure after specifying settings based on the control method
indicated previously (4.7.1 [1] to [4].)
■ Selecting the tuning method
Check the situation of the machine 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 machine.
When selecting rotation tuning” (P04* = 2), the motor will rotate at a speed 50% of the base frequency,
allowing tuning to be performed safely.
Table 4.8-8
P04*
data
Tuning type
Motor parameters subjected 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, 2 (P53*,
P54*)
Tuning with the motor
stopped
Cannot rotate the
motor.
2
Tune while the
motor is
rotating
No-load current (P06*)
Primary resistance (%R1) (P07*)
Leakage reactance (%X) (P08*)
Rated slip frequency (P12*)
Magnetic saturation factor 1 to 5,
a, b, c (P16* to P23*)
%X correction factor 1, 2 (P53*,
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.
5
Tune while the
motor stops.
Primary resistance (%R1) (P07*)
Leakage reactance (%X) (P08*)
%X correction factor 1, 2 (P53*,
P54*)
Tuning with the motor
stopped
Cannot rotate the
motor.
The tuning results of
motor parameters will
be automatically stored
into their respective
function codes. If tuning
by P04* is performed,
the tuning results will be
stored into P* codes
(Motor 1* parameters).
The tuning results of motor parameters will be automatically stored into their respective function codes.
If tuning by P04* is performed, the tuning results will be stored into P* codes (Motor 1* parameters).
In the case of tuning by A18*, the tuning data is set to the function code (A* code) of motor 2*.
■ Mechanical system preparation
In preparation for tuning, remove the motor coupling with the load and deactivate the safety devices before rotation
tuning.