V VW Vector Control
CFW501 | 10-7
10
P0407 – Motor Rated Power Factor
Adjustable
Range:
0.50 to 0.99 Factory
Setting:
0.80
Properties: cfg
Access groups
via HMI:
MOTOR, STARTUP
Description:
The setting of parameters P0398, P0399, P0401, P0402, P0403, P0404 and P0407 must be according to the
nameplate data of the used motor, taking into account the motor voltage.
P0408 – Self-tuning
Adjustable
Range:
0 = Inactive
1 = No Rotation
Factory
Setting:
0
Properties: cfg, V V W
Access groups
via HMI:
STARTUP
Description:
Parameter P0408 in 1 activates the self-tuning of the V V W mode, where the motor stator resistance is
measured. The self-tuning can only be activated via HMI, and it can be interrupted at any time with the key.
During the self-tuning, the motor remains still, because a direct current signal is sent to measure the stator
resistance.
If the estimated value of the motor stator resistance is too high for the inverter used (for example: motor not
connected or motor too small for the inverter) the inverter indicates fault F0033.
At the end of the self-tuning process, the measured motor stator resistance is saved in P0409.
P0409 – Stator Resistance
Adjustable
Range:
0.01 to 99.99 Ω Factory
Setting:
According
to inverter
model
Properties: cfg, V V W
Access groups
via HMI:
MOTOR, STARTUP
Description:
Motor phase stator resistance in ohms (Ω), assuming a star (Y) motor connection.
If the value adjusted in P0409 is too high or too low for the inverter used, the inverter indicates fault F0033. In
order to exit this condition, just perform a reset by using the key. In this case, P0409 will be loaded with the
factory default value which is equivalent to WEG IV pole standard motor stator resistance with power matched
to the inverter, as per Table 10.1: Characteristics of IV pole WEG standard motors on page 10-3.
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