Rockwell Automation GV3000/SE AC Gen. Purpose and Vector Drive Software Start-Up and Ref. Manual - Manual (Page 160)

4-74 GV3000/SE AC Drive Software Reference, Version 6.06
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For FVC operation (U.001 ≠ SE), this procedure determines the encoder PPR
selection for parameter U.001 (Encoder PPR). Determining the encoder PPR may be
necessary since the PPR is not always listed on the motor or encoder nameplate.
Determining the magnetizing current ratio is necessary in vector regulation so that the
proper no-load current, or magnetizing current, is set. The proper magnetizing current
is required to develop rated motor torque, speed, and horsepower in vector regulation.
For FVC and SVC operation, this procedure also determines the value for parameter
U.006 (Magnetizing Current).
This parameter will be set to OFF when self-tuning is completed or aborted. This
parameter only enables self-tuning. It does not start the procedure. Parameters U.002,
U.003, U.004, U.005, and U.007 must be programmed before enabling self-tuning in
U.008. Then the START key can be pressed to start the procedure. During the test,
the motor will accelerate up to 90% of U.005 (Motor Nameplate RPM) even if this
value is greater than the value set in P.004 (Maximum Speed).
U.008 Torque Self-Tune Enable
This parameter
enables the
self-tuning
procedure.
Parameter Range: ON = Enable self-tuning
OFF = Disable self-tuning
Default Setting: OFF
Parameter Type: Configurable
Refer also to parameters: U.001 Encoder PPR (FVC only)
U.006 Magnetizing Current
!
ATTENTION: The motor must be uncoupled from the drive load during
self-tuning operation or incorrect parameter values will result. This
includes any shaft-coupled devices such as reducers, belts, or brakes.
Failure to observe this precaution could result in damage to, or
destruction of, the equipment.