ABB ACS880 Firmware Manual page 249

No. Name/Value
28.21 Constant frequency
function
Bit Name
0 Constant freq
mode
1 Direction
enable
0000b...0011b
28.22 Constant frequency
sel1
Source defined
by par.
0
1
0
1
0
1
0
1
Not selected
Selected
DI1
DI2
DI3
DI4
DI5
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Description
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 28.22,
0 = Separate: Constant frequencies 1, 2 and 3 are separately activated
by the sources defined by parameters 28.22,
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
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 (parameters
28.26...28.32).
Constant frequency configuration word.
When bit 0 of parameter
0 (Separate), selects a source that activates constant
frequency 1.
When bit 0 of parameter
1 (Packed), this parameter and parameters
frequency sel2 and 28.24 Constant frequency sel3
three sources whose states activate constant frequencies as
follows:
Source defined
28.22 by par. 28.23
0
0
1
1
0
0
1
1
0.
1.
Digital input DI1 (10.02 DI delayed
Digital input DI2 (10.02 DI delayed
Digital input DI3 (10.02 DI delayed
Digital input DI4 (10.02 DI delayed
Digital input DI5 (10.02 DI delayed
28.23 and 28.24.
28.26...28.32 are positive.
28.21 Constant frequency function
28.21 Constant frequency function
28.23 Constant
Source defined Constant frequency
by par. 28.24
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
status, bit 0).
status, bit 1).
status, bit 2).
status, bit 3).
status, bit 4).
Parameters 249
Def/FbEq16
0000b
28.23 and 28.24
1 = 1
is Not selected
is
select
active
None
0
1
2
3
4
5
6