WEG CFW501 V1.8X, Programming Manual, Page: 160 / 192

HVAC Functions
18-2 | CFW501
18
P0407 – Motor Rated Power Factor
Adjustable
Range:
0.50 to 0.99 Factory
Setting:
0.80
Properties: cfg, V/f, V VW
Access groups
via HMI:
MOTOR, STARTUP
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 P0407 in the V VW control mode, refer to chapter 10 V VW VECTOR
CONTROL on page 10-1 .
P0588 – Energy Saving Maximum Torque
Adjustable
Range:
0 to 85 % Factory
Setting:
60 %
Properties: cfg, V/f
Access groups
via HMI:
HVAC
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.
P0589 – Level of Minimum Applied Voltage
Adjustable
Range:
40 to 80 % Factory
Setting:
40 %
Properties:
cfg, V/f
Access groups
via HMI:
HVAC
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.