ABB ACS880 Firmware Manual page 434

434 Parameters
No. Name/Value
Reduced
Standstill
Autophasing
Current
measurement
calibration
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Description
Reduced ID run. This mode should be selected instead of the
Normal or Advanced ID Run if
• mechanical losses are higher than 20% (i.e. the motor
cannot be de-coupled from the driven equipment), or if
• flux reduction is not allowed while the motor is running (i.e.
in case of a motor with an integrated brake supplied from
the motor terminals).
With this ID run mode, the resultant motor control in the field
weakening area or at high torques is not necessarily as
accurate as motor control following a Normal ID run. Reduced
ID run is completed faster than the Normal ID Run (< 90
seconds).
Note: Check the direction of rotation of the motor before
starting the ID run. During the run, the motor will rotate in the
forward direction.
WARNING! The motor will run at up to approximately
50...100% of the nominal speed during the ID run.
ENSURE THAT IT IS SAFE TO RUN THE MOTOR
BEFORE PERFORMING THE ID RUN!
Standstill ID run. The motor is injected with DC current. With
an AC induction (asynchronous) motor, the motor shaft is not
rotated. With a permanent magnet motor or synchronous
reluctance motor, the shaft can rotate up to half a revolution.
Note: A standstill ID run should be selected only if the Normal,
Reduced or Advanced ID run is not possible due to the
restrictions caused by the connected mechanics (eg. with lift
or crane applications).
See also selection Advanced
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
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
already been performed.
• Depending on the selected autophasing mode, the shaft
can rotate during autophasing. See parameter
Autophasing mode.
Requests current measurement calibration, ie. identification of
current measurement offset and gain errors.
The calibration will be performed at next start.
Standstill.
or Advanced Standstill
Advanced Standstill ID run has
21.13
Def/FbEq16
2
3
4
ID
5