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394 Parameters
Warning
or
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
1
Forces the DTC motor model to use estimated motor speed
as feedback. This parameter can be activated when the
encoder data is obviously unreliable because of slippage, for
example.
Note:
This parameter only affects the selection of feedback
for the motor model, not for the speed controller.
No
The motor model uses the feedback selected by
0
Yes
The motor model uses the calculated speed estimate
(regardless of the setting of
,
which in this case only selects the source of feedback for the
speed controller).
1
Selects the axis type for motor position measurement.
Linear
Linear.
0
Rollover
The value is between 0 and 1 revolutions, and rolls over at
360 degrees.
1
Defines how many bits are used for motor position count
within one revolution. For example, with the setting of 24, the
position value is multiplied by 16777216 for display in
parameter
(or for fieldbus).
24
0…31
Motor position resolution.
-
Selects the source of load speed and position feedbacks used
in control.
None
No load feedback selected.
0
Encoder 1
Load feedbacks are updated based on the speed and position
values read from encoder 1.
The values are scaled by the load gear function (
).
The encoder is set up by the parameters in group
.
1
Encoder 2
Load feedbacks are updated based on the speed and position
values read from encoder 2.
The values are scaled by the load gear function (
).
The encoder is set up by the parameters in group
.
2
Estimate
Calculated speed and position estimates are used. The
values are scaled from the motor side to the load side using
the inverted ratio between
and
divided by
3
Motor feedback
The source selected by parameter
for motor feedback is also used for load feedback.
Any difference between the motor and load speeds (and
positions) can be compensated by using the inverted ratio
between
(ie.
divided by
4
No.
Name/Value
Description
Def
/
FbEq16
Содержание ACS880-x04
Страница 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Страница 4: ......
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 111: ...Application macros 111 Fieldbus control macro This application macro is not supported by the current firmware version ...
Страница 112: ...112 Application macros ...
Страница 496: ...496 Additional parameter data ...
Страница 544: ...544 Fault tracing ...
Страница 602: ...602 Control chain diagrams ...