WEG CFW300 V1.3X, Programming Manual

Page: 70 / 157

V/f Scalar Control
9-8 | CFW300
9
P401 - Motor Rated Current
Adjustable
Range:
0.0 to 40.0 A
Factory
Setting:
1.0 x I
nom
Properties: cfg
Description:
In order to obtain the proper operation of the energy saving function, the motor current value must be correctly
set, according to the information on the motor nameplate.
P407 – Motor Rated Power Factor
Adjustable
Range:
0.50 to 0.99 Factory
Setting:
0.80
Properties: cfg, V/f, V VW
Description:
Setting of the motor rated power factor. In order to obtain the proper operation of the energy saving function,
the motor power factor must be correctly set, according to the information on the motor nameplate.
NOTE!
With the motor nameplate data and for applications with constant torque, the motor optimum efficiency
is normally obtained with the energy saving function active. In some cases, the output current may
increase, and then it is necessary to gradually reduce the value of this parameter to the point in which
the current value remains equal to or below the current value obtained with the function disabled.
For information regarding the actuation of P407 in the VVW control mode, refer to Chapter 10 VVW VECTOR
CONTROL on page 10-1 .
P588 – Energy Saving Maximum Torque Adjustable
Adjustable
Range:
0 to 85 % Factory
Setting:
0 %
Properties: cfg, V/f
Description:
This parameter defines the torque value to activate the operation of the energy saving function.
Setting this parameter to 0 % disables the function.
It is recommended to set this parameter to 60 %, but it has to be set according the application requirements.
P589 – Level of Minimum Applied Voltage
Adjustable
Range:
40 to 80 % Factory
Setting:
40 %
Properties: cfg, V/f
Description:
This parameter defines the minimum voltage value that will be applied to the motor when the energy saving
function is active. This minimum value is relative to the voltage imposed by the V/f curve for a certain speed.