440 Parameters
Autophasing The autophasing routine determines the start angle of a
permanent magnet or synchronous reluctance motor (see
page 59). Autophasing does not update the other motor model
values.
Autophasing is automatically performed as part of the Normal,
Reduced, Standstill, Advanced or Advanced Standstill ID
runs. Using this setting, it is possible to perform autophasing
alone. This is useful after changes in the feedback
configuration, such as the replacement or addition of an
absolute encoder, resolver, or pulse encoder with
commutation signals.
Notes:
• This setting can only be used after a Normal, Reduced,
Standstill, Advanced or Advanced Standstill ID run has
already been performed.
• Depending on the selected autophasing mode, the shaft
can rotate during autophasing. See parameter 21.13
Autophasing mode.
4
Current
measurement
calibration
Requests current measurement calibration, ie. identification of
current measurement offset and gain errors.
The calibration will be performed at next start.
5
Advanced Advanced ID run. Guarantees the best possible control
accuracy. The ID run can take a couple of minutes. This mode
should be selected when top performance is needed across
the whole operating area.
Note: The driven machinery must be de-coupled from the
motor because of high torque and speed transients that are
applied.
WARNING! The motor will run at up to approximately
50…100% of the nominal speed during the ID run.
Several accelerations and decelerations are done.
ENSURE THAT IT IS SAFE TO RUN THE MOTOR BEFORE
PERFORMING THE ID RUN!
6
Advanced Standstill Advanced Standstill ID run.
This selection is recommended with AC induction motors up
to 75 kW instead of the Standstill ID run if
• the exact nominal ratings of the motor are not known, or
• the control performance of the motor is not satisfactory
after a Standstill ID run.
Note: The time it takes for the Advanced Standstill ID run to
complete varies according to motor size. With a small motor,
the ID run typically completes within 5 minutes; with a large
motor, the ID run may take up to an hour.
7
99.14 Last ID run
performed
Shows the type of ID run that was performed last. For more
information about the different modes, see the selections of
parameter 99.13 ID run requested.
None
None No ID run has been performed. 0
Normal Normal ID run. 1
Reduced Reduced ID run. 2
Standstill Standstill ID run. 3
Autophasing Autophasing.4
Current
measurement
calibration
Current measurement calibration.5
No. Name/Value Description Def/FbEq16
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