328 Parameters
90.41
Motor feedback
selection
Selects the motor speed feedback value used during
motor control.
Note:
With a permanent magnet motor, make sure an
autophasing routine (see page
57
) is performed using the
selected encoder. If necessary, set parameter
99.13
ID
run requested
requested to
Autophasing
to request a
fresh autophasing routine.
Estimate
Estimate
A calculated speed estimate generated from the vector
control is used.
0
Encoder 1
Actual speed measured by encoder 1. The encoder is set
up by the parameters in group
92 Encoder 1 configuration
.
1
90.42
Motor speed filter time
Defines a filter time for motor speed feedback used for
control (
90.01
Motor speed for control
).
3 ms
0 … 10000 ms
Motor speed filter time.
1=1
90.45
Motor feedback fault
Selects how the drive reacts to loss of measured motor
feedback.
Fault
Fault
Drive trips on a
7301
Motor speed feedback
. or
7381
Encoder
fault.
0
Warning
Drive generates a
A7B0
Motor speed feedback
or
A7E1
Encoder
warning and continues operation using estimated
feedbacks.
Note:
Before using this setting, test the stability of the
speed control loop with estimated feedback by running the
drive on estimated feedback (see
90.41
Motor feedback
selection
).
1
90.46
Force open loop
Defines the speed feedback used by the vector motor
model.
No
No
The motor model uses the feedback selected by
90.41
Motor feedback selection
.
0
Yes
The motor model uses the calculated speed estimate
(regardless of the setting of
90.41
Motor feedback
selection
, which in this case only selects the source of the
feedback for the speed controller).
1
90.47
Enable motor encoder
drift detection
Enables/disables the motor encoder drift detection. When
drift is detected, fault
7301
Motor speed feedback
and
AUX code 4 Drift detected are set.
Yes
No
Drift detection is disabled.
0
Yes
Drift detection is enabled.
1
91
91 Encoder adapter
settings
Configuration of encoder interface modules.
91.10
Encoder parameter
refresh
Validates any changed encoder interface module
parameters. This is needed for any parameter changes in
groups 90…93 to take effect.
After refreshing, the value reverts automatically to
Done
.
Notes:
• Permanent magnet motors only: The drive will perform
a fresh autophasing routine (see page
57
) at next start
if the motor feedback encoder settings have been
changed.
• The parameter cannot be changed while the drive is
running.
Done
No.
Name/Value
Description
Default
FbEq 16
ACS380 FW.book Page 328 Friday, May 4, 2018 4:18 PM
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