WEG CFW-09 - Page 215

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CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
Range
[Factory Setting]
Parameter
Unit
Description / Notes
This parame-
ter is shown on the
display(s)onlywhen
P202 = 3 or 4
(VectorControl)
This parameter controls theself-tuning routine,whichestimatesthe value
of parameters related to the motor under use. When P408 is set to
options 1,2,or 3,theself-tuningroutineestimates the value ofparameters
P409 to P413
.
When this parameter is set to option 4, the self-tuning
routine onlyestimates the value of parameter P413.
Note:
Best results for the self-tuning routine are obtained with a hot
motor.
P408
(1)
0 to 2
RunSelf-Tuning
(P202= 3)
[
0
]
1
0 to 4
(P202= 4)
[
0
]
1
0 or 1
(P202= 5)
[
0
]
1
This parame-
ter is shown on the
display(s)onlywhen
P202 = 5 (VVW)
This parameter sets the motor power factor;
This parameter is important to the correctoperation of the VVW Control.
The incorrect setting of this parameter results in the incorrect calculation
of the slip compensation;
The default value of this parameter is automaticallyset when parameter
P404 is modified. The suggested value is valid onlyfor IV pole standard
three-phase WEG motors. The user shall set this parameter manually
for other motor types.
P407
(1) (2)
0.50 to 0.99
Rated Motor Power
[
According to the
Factor
motorrated power
(P404) ]
-
The Self-tuning
Routine can be
cancelled by
pressing the
key, only
when P409 to P413
are different from
zero.
Self-tuning
can
be realized only
with
P309
=
Inactive (0)
Table 6.62
- Self-tuning options
- Norotation
-Themotorremains stationaryduringtheself-tuningroutine.
Thevalue ofP410is obtained from a table, which is valid for WEG motors
up to 12 poles.
Thus, P410 must be set to zero before starting the self-tuning routine. If
P410

0, the self-tuning routine will keep the existing value.
Note:
When using a non-WEG motor, set P410 to the proper value (no
load current) before running the self-tuning routine.
-
Run for Imr
- The value of P410 is estimated with the motor rotating.
This option shall be executed without load coupled to the motor.
ATTENTION!
If the self-tuning routine is executed with a load coupled to the
motor and with P408 setto option2 (RunforImr), a wrong value of
P410(Imr) maybe obtained. This will resultin a wrong estimation
of P412 (Lr/Tr Constant) and P413 (Mechanical Time Constant -
Tm).An overcurrent fault (E00) mayalso occur during the inverter
operation.
Note:
The word “load” represents anything coupled to the motor
shaft such as a gearbox, an inertia wheel, etc.
P408
Self
-
tuning
Type of Control
P202
0
No
-
-
1
No rotation
Sensorless Vector, Vector with
Encoder or VVW
3,
4 or 5
2
Run for Imr
Sensorless Vector or Vector
with Encoder
3 or 4
3
Run for Tm
Vector with Encoder
4
4
Measure Tm
Vector with Encoder
4