WEG CFW-09 User Manual page 218

[Factory Setting]
Parameter
P413 (1)
Tm Constant
(Mechanical Time
Constant)
This parame-
ter is shown on the
display(s) only when
P202 = 3 or 4
(Vector Control)
Range
Unit Description / Notes
Typical T
Motor Power
0.00 to 99.99
The setting of P413 determines the gains of the speed regulator (P161
[ 0.00 ] and P162).
0.01 s
When P408 = 1 or 2, observe the following:
- If P413 = 0, then the Tm constant will be obtained as a function of the
motor inertia (memory stored value).
- If P413 > 0, then the value of P413 will not be changed during the self-
tuning routine.
Sensorless Vector Control (P202 = 3):
When the value of P413 (obtained from the self-tuning routine) provides
unsuitable gains for the speed regulator, modify this parameter to better
adjust the speed regulator gains.
The value of P161, provided by the self-tuning routine or through the
changing of P413, will be limited in the range: 6.0  P161  9.0.
The value of P162 varies according to the value of P161.
In case it is needed to increase more these gains, set them directly at
P161 and P162.
Note: Values of P161 > 12.0 may cause oscillations in the torque current
(iq) and in the speed.
Vector with Encoder Control (P202 = 4):
The value of P413 is estimated by the self-tuning routine when P408 = 3
or 4. In case it is not possible to estimate it, the setting shall be performed
manually. (Refer to P161/P162).
CHAPTER 6 - DETAILED PARAMETER DESCRIPTION
values for WEG standard motors:
R
CV-hp / kW
2
(50 Hz/60 Hz)
0.19 / 0.14
2 / 1.5
0.29 / 0.29
5 / 3.7
- / 0.38
10 / 7.5
0.52 / 0.36
15 / 11
0.49 / 0.51
20 / 15
0.70 / 0.55
30 / 22
- / 0.84
50 / 37
1.64 / 1.08
100 / 75
1.33 / 1.74
150 / 110
- / 1.92
200 / 150
- / 2.97
300 / 220
- / -
350 / 250
- / -
500 / 375
Table 6.63 - Typical T values for some WEG standard motors
R
T (s):
R
Number of poles
4 6
(50 Hz/60 Hz) (50 Hz/60 Hz) (50 Hz/60 Hz)
0.13 / 0.14 0.1 / 0.1 0.07 / 0.07
0.18 / 0.12 - / 0.14
0.32 / 0.25 0.21 / 0.15 0.13 / 0.14
0.30 / 0.25 0.20 / 0.22 0.28 / 0.22
0.27 / 0.29 0.38 / 0.2 0.21 / 0.24
0.37 / 0.34 0.35 / 0.37
0.55 / 0.54 0.62 / 0.57 0.31 / 0.32
1.32 / 0.69 0.84 / 0.64 0.70 / 0.56
1.05 / 1.01 0.71 / 0.67
- / 0.95 - / 0.65
1.96 / 2.97 1.33 / 1.30
1.86 / 1.85 - / 1.53
- / 1.87 - / -
8
0.14 / 0.11
- / 0.38
- / 0.67
- / 1.03
- / -
- / -
- / -
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