ABB ACS880 Series, Supplement Manual

Page: 34 / 50

30 Signals and parameters
Terms and abbreviations
Summary of parameter groups
Term Definition
Actual signal Type of parameter that is the result of a measurement or calculation by the drive, or
contains status information. Most actual signals are read-only, but some (especially
counter-type actual signals) can be reset.
Bit pointer
setting A parameter setting that points to the value of a bit in another parameter (usually an actual
signal), or that can be fixed to 0 (FALSE) or 1 (TRUE).
When adjusting a bit pointer setting on the optional control panel, “Const” is selected in
order to fix the value to 0 (displayed as “C.False”) or 1 (“C.True”). “Pointer” is selected to
define a source from another parameter.
A pointer value is given in the format
P.xx.yy.zz , where xx = parameter group, yy =
parameter index, zz = bit number.
Pointing to a non existing bit will be interpreted as 0 (FALSE).
In addition to the “Const” and “Pointer” selections, bit pointer settings may also have other
pre-selected settings.
Def (In the following table, shown on the same row as the parameter name)
The default value of a
parameter .
FbEq16 (In the following table, shown on the same row as the parameter range, or for each
selection)
16-bit fieldbus equivalent: The scaling between the value shown on the panel and the
integer used in communication when a 16-bit value is selected for transmission to an
external system.
A dash (-) indicates that the parameter is not accessible in 16-bit format.
Other The value is taken from another parameter.
Choosing “Other” displays a parameter list in which the user can specify the source
parameter.
Note: The source parameter must be a 32-bit real (floating point) number. To use a 16-bit
integer (for example, received from an external device in data sets) as the source, use
data storage parameters
47.01 … 47.08 .
Other [bit] The value is taken from a specific bit in another parameter.
Choosing “Other” displays a parameter list in which the user can specify the source
parameter and bit.
Parameter Either a user-adjustable operating instruction for the drive, or an actual signal .
p.u. Per unit
Parameter group Description See page
09 Centrifuge Centrifuge and Decanter actual signals. 31
74 Centrifuge Decanter
control Selecting Centrifuge or Decanter control. 34
75 Centrifuge function Settings for Centrifuge operation sequence control. 34
77 Centrifuge pattern Settings for controlling speed, acceleration and time
behavior of Centrifuge. 35
78 Decanter control Decanter operation parameters. 36
79 Decanter jogging Decanter jogging control parameters. 40