ABB ACS280 Firmware Manual page 174

174 Parameters
No. Name/Value
Min (ref1, ref2)
Max (ref1, ref2)
28.21 Constant frequency
function
Bit Name
0 Const freq
mode
1 Direction
enable
2...15 Reserved
0b0000...0b1111
28.22 Constant frequency
sel1
Source defined
by par.
Always off
Description
The smaller of the reference sources is used as
frequency reference 1.
The greater of the reference sources is used as
frequency reference 1.
Determines how constant frequencies are selected,
and whether the rotation direction signal is
considered or not when applying a constant
frequency.
Information
1 = Packed: 7 constant frequencies are selectable using the three
sources defined by parameters
0 = Separate: Constant frequencies 1, 2 and 3 are separately
activated by the sources defined by parameters
28.24
respectively. In case of conflict, the constant frequency with
the smaller number takes priority.
1 = Start dir: To determine running direction for a constant
frequency, the sign of the constant frequency setting (parameters
28.26 28.32
... ) is multiplied by the direction signal (forward: +1,
reverse: -1). This effectively allows the drive to have 14 (7 forward, 7
reverse) constant frequencies if all values in
positive.
WARNING! If the direction signal is reverse and the active
constant frequency is negative, the drive will run in the
forward direction.
0 = According to Par: The running direction for the constant
frequency is determined by the sign of the constant speed setting
28.26
(parameters
Constant frequency configuration word.
When bit 0 of parameter
function
is 0 (Separate), selects a source that
activates constant frequency 1.
When bit 0 of parameter
function
is 1 (Packed), this parameter and parameters
28.23 Constant frequency sel2
frequency sel3
activate constant frequencies as follows:
Source defined
28.22 28.23
by par.
0 0
0 0
0 0
1 1
0 0
1 0
0 1
1 1
0 (always off).
28.22 28.23
,
28.32
... ).
28.21 Constant frequency
28.21 Constant frequency
28.24 Constant
and
select three sources whose states
Source defined Constant frequency
28.24
by par.
0
0 Constant frequency 1
0 Constant frequency 2
0 Constant frequency 3
1 Constant frequency 4
1 Constant frequency 5
1 Constant frequency 6
1 Constant frequency 7
Default
FbEq 16
4
5
0b00001
28.24
and .
28.22 28.23
, and
28.26 28.32
... are
1 = 1
Always off
active
None
0