Bulletin 284G Programmable Parameters for Sensorless Vector Controllers 4-51
Important: Used when motor is uncoupled from the load. Results
may not be valid if a load is coupled to the motor during
this procedure.
If the Autotune routine fails, an F80 SVC Autotune fault is displayed.
Autotune
Provides an automatic method for setting Parameter 228 (IR Voltage Drop) and
Parameter 229 (Flux Current Ref), which affect sensorless vector performance.
Parameter 226 (Motor NP FLA) must be set to the motor nameplate full load amps
before running the Autotune procedure.
Provides an automatic method for setting A128 (IR Voltage Drop) and A129 (Flux
Current Ref), which affect sensorless vector performance. Parameter A126 (Motor
NP FLA) must be set to the motor nameplate full load amps before running the
Autotune procedure.
0 = Ready/Idle (Default)
1 = Static Tune
2 = Rotate Tune
Ready (0) — Parameter returns to this setting following a Static Tune or Rotate
Tune.
Static Tune (1) — A temporary command that initiates a non-rotational motor
stator resistance test for the best possible automatic setting of A128 (IR Voltage
Drop). A start command is required following initiation of this setting. The parameter
returns to Ready (0) following the test, at which time another start transition is
required to operate the drive in normal mode. Used when motor cannot be
uncoupled from the load.
Rotate Tune (2) — A temporary command that initiates a Static Tune followed by a
rotational test for the best possible automatic setting of A129 (Flux Current Ref). A
start command is required following initiation of this setting. The parameter returns
to Ready (0) following the test, at which time another start transition is required to
operate the drive in normal mode.
Parameter Number 227
Related Parameters 225, 226, 228, 229
Access Rule GET/SET
Data Type UINT
Group Advanced Program Group
Units —
Minimum Value 0
Maximum Value 3
Default Value 0
Stop drive before changing this parameter.
Rotation of the motor in an undesired direction can occur
during this procedure. To guard against possible injury and/
or equipment damage, it is recommended that the motor be
disconnected from the load before proceeding.
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