WEG CFW-11 Programming Manual page 125

Note: When using another brand of motor P0410 must be adjusted with the adequate value (no load motor
current) before initiating the self-tuning.
P0408=2 Run for I
m
coupled to the motor. P0409, P0411 to P0413 are estimated with the motor standing still.
atteNtioN!
If the option P0408=2 (Run for I
of P0410 (I ) may be estimated. This will implicate in estimation error for P0412 (rotor time constant
m
- T ) and for P0413 (mechanic time constant – T
r
the inverter operation.
Note: The term "load" includes everything that might be coupled to the motor shaft, for instance,
gearbox, inertia disk, etc.
P0408=3 Run for T
rotating. It must be done, preferably, with the load coupled to the motor. P0409 to P0412 are estimated
with the motor standing still and P0410 is estimated in the same manner as with P0408=1.
P0408=4 – Estimate T
motor rotating. It must be done, preferably, with the load coupled to the motor.
NoteS!
 Every time that P0408=1 or 2:
The parameter P0413 (Mechanic time constant – Tm) will be adjusted to a value close to the motor
mechanic time constant. Therefore, the motor rotor inertia (table data valid for WEG motors), the
inverter rated voltage and current are taken into consideration.
 Vector mode with encoder (P0202=4):
When using P0408=2 (Run for I
to the motor and set P0408=4 (Estimate T
P0413 will also consider the driven load.
 VVW mode – Voltage Vector WEG (P0202=5):
In the VVW control self-tuning routine only the value of the stator resistance (P0409) will be obtained.
Therefore, the self-tuning will always be performed without rotating the motor.
 Better self-tuning results are obtained with the motor warm.
P0409 – Motor Stator Resistance (Rs)
Adjustable 0.000 to 9.999 ohm
Range:
Proprieties: CFG, Vector and VVW
Access groups 01 PARAMETER GROUPS
via HMI:
: The P0410 value is estimated with the motor rotating. It must be executed without load
) is performed with the load coupled to the motor, an incorrect value
m
: The value of P0413 (Mechanic time constant – T
m
: it estimates only the P0413 (Mechanic time constant – T
m
), one must, after finishing the self-tuning routine, couple the load
m
29 Vector Control
94 Self-tuning
). Overcurrent fault (F071) may also occur during
m
) is estimated, with the motor
m
) in order to estimate the value of P0413. In this case
m
05 SELF-TUNING
or
Vector Control
) value, with the
m
Factory 0.000 ohm
Setting:
11-23
11