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Program features 51
Position counter
The control program contains a position counter feature that can be used to indicate
the position of the load. The output of the counter function, parameter
, indicates the scaled number of revolutions read from the selected
source (see section
on page
The relation between revolutions of the motor shaft and the translatory movement of
the load (in any given unit of distance) is defined by parameters
and
. This gear function can be changed
without the need of a parameter refresh or position counter reinitialization – however,
the counter output is only updated after new position input data is received.
For detailed parameter connections of the load feedback function, see the block
diagram on page
.
The position counter is initialized by setting a known physical position of the load into
the control program. The initial position (for example, the home/zero position, or the
distance from it) can be entered manually in a parameter (
), or taken from another parameter. This position is set as the value of the
position counter (
) when the source selected by
, such as a proximity switch connected to a digital input, is
activated. A successful initialization is indicated by bit 4 of
-2147483
8
+2147483
(Proximity switch) Source set by
1
0
1
0
1
0
1
0
1
0
1
0
(Initialization inhibit) Source set by
bit 4,
(Re-init request) Source set by
Drive fault
(by default,
)
bit 5,
Position counter re-init disabled
0
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 ...