Vvw Vector Control Parameterization - WEG CFW100 Programming Manual

10.1 VVW VECTOR CONTROL PARAMETERIZATION

The V V W control mode is selected by parameter P202, control mode selection, as described in
AVAILABLE MOTOR CONTROL TYPES on page
Opposite to the V/f scalar control, the V V W control requires a series of data from the motor nameplate and a
self-tuning for its proper operation. Besides, it is recommended that the driven motor match the inverter, that is,
the motor and inverter power be as close as possible.
Below are described the parameters to configure the V V W vector control setting. This data is easily obtained on
WEG standard motor nameplates, however in older motors or motors made by other manufacturers, the data
may not be readily available. In those cases, it is recommended first contact the motor manufacturer, measure or
calculate the desired parameter. As a last resort, the user always can make a relationship with
10-3 and use the equivalent or approximate WEG standard motor parameter.
NOTE!
The correct setting of the parameters directly contributes to the V V W control performance.
Power [P404]
Frame
size
(CV) (kW)
0.16 0.12 63
0.25 0.18 63
0.33 0.25 63
0.50 0.37 71
0.75 0.55 71
1 0.75 80
0.16 0.12 63
0.25 0.18 63
0.33 0.25 71
0.50 0.37 71
0.75 0.55 80
1 0.75 80
P178 – Rated Flux
Adjustable 50.0 to 150.0 %
Range:
Properties: V V W
Description:
It defines the desired flux in the motor air gap in percentage (%) of the rated flux. In general, it is not necessary
to modify the value of P178 of the standard value of 100 %. However, some specific situations may use values
slightly above to increase the torque, or below to reduce the energy consumption.
P399 – Motor Rated Efficiency
Adjustable 50.0 to 99.9 %
Range:
Properties: cfg, V V W
Description:
This parameter is important for the precise operation of the V V W control. A misconfiguration will cause incorrect
calculation of the slip compensation, reducing the performance of the speed control.
8-1.
Table 10.1: Characteristics of IV pole WEG standard motors
Voltage Current Frequency
[P400] [P401] [P403]
(V) (A) (Hz)
0.85
1.12
1.42
220 60
2.07
2.90
3.08
0.73
1.05
1.40
230 50
1.97
2.48
3.23
Return Advance
V V W Vector Control
Speed Efficiency Power
[P402] [P399] Factor
(rpm) (%) [P407]
1720 56 0.66
1720 64 0.66
1720 67 0.69
1720 68 0.69
1720 71 0.70
1720 78 0.82
1375 57 0.72
1360 58 0.74
1310 59 0.76
1320 62 0.76
1410 68 0.82
1395 72 0.81
Factory
Setting:
Factory
Setting:
chapter 8
Table 10.1 on page
Stator Resistance
[P409]
(Ω)
21.77
14.87
10.63
7.37
3.97
4.13
30.62
20.31
14.32
7.27
5.78
4.28
10
100.0 %
67.0 %
CFW100 | 10-3