9. How to enable Sensorless Vector Mode
Page 9
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The standard operating mode of the CFW-08
Inverter is VxF. This is the simplest form of
operation and controls Volts and Frequency to
vary the speed of a standard Induction Motor.
The CFW-08 can also operate in Sensorless
Vector mode. This can improve motor
performance without requiring a separate
feedback device.
In order to improve performance, Sensorless
Vector builds a “model” of the motor it is
controlling. This is achieved by a “tuning” run
during which the Inverter operates for approx.
2 minutes to gather the necessary motor data.
Note: Sensorless Vector is not suitable
where the motor rating is significantly
lower than the Inverter rating or where
more than one motor is being controlled.
Invoking a “tuning” run in these cases will
not be successful and return an E14 error.
Parameter
Description
How to set
P000
Parameter Access
Set to
to allow parameters to be changed
5
P202
Control Mode
Default is 0 (linear). Set to
to enable Sensorless Vector Control.
2
P408
Run Self-Tuning
Default is 0. Ensure motor is off-load before changing to
to begin self-tuning.
1
The display will flash “auto” whilst
the CFW-08 performs it’s tuning run.
Easy Start Guide
WEG CFW-08 Series Inverter
9.1 Parameters to check and values to set
