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208 Parameters
28.16
Ext2 frequency ref2
Selects Ext2 frequency reference source 2.
For the selections, and a diagram of reference source
selection, see parameter
28.15 Ext2 frequency ref1
.
Zero
28.17
Ext2 frequency
function
Selects a mathematical function between the reference
sources selected by parameters
28.15 Ext2 frequency
ref1
and
28.16 Ext2 frequency ref2
. See diagram at
28.15
Ext2 frequency ref1
.
Ref1
Ref1
Signal selected by
28.15 Ext2 frequency ref1
is used as
frequency reference 1 as such (no function applied).
0
Add (ref1 + ref2)
The sum of the reference sources is used as frequency
reference 1.
1
Sub (ref1 - ref2)
The subtraction ([
28.15 Ext2 frequency ref1
] - [
28.16 Ext2
frequency ref2
]) of the reference sources is used as
frequency reference 1.
2
Mul (ref1 × ref2)
The multiplication of the reference sources is used as
frequency reference 1.
3
Min (ref1, ref2)
The smaller of the reference sources is used as frequency
reference 1.
4
Max (ref1, ref2)
The greater of the reference sources is used as frequency
reference 1.
5
Abs (ref1)
Selects a mathematical function between the frequency
reference sources.
6
28.21
Constant frequency
function
Determines how constant frequencies are selected, and
whether the rotation direction signal is considered or not
when applying a constant frequency.
0b00001
0b0000...0b1111
Constant frequency configuration word.
1 = 1
No.
Name/Value
Description
Default
FbEq 16
Bit
Name
Information
0
Const freq
mode
1 = Packed: 7 constant frequencies are selectable using the three
sources defined by parameters
28.22
,
28.23
and
28.24
.
0 = Separate: Constant frequencies 1, 2 and 3 are separately activated
by the sources defined by parameters
28.22
,
28.23
and
28.24
respectively. In case of conflict, the constant frequency with the smaller
number takes priority.
1
Direction
enable
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
28.26
…
28.32
are 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 (parameters
28.26
…
28.32
).
2
Frequency step Frequency step: 1 = Freq step enable; 0 = Freq step disable
3...15
Reserved
ACS380 FW.book Page 208 Friday, May 4, 2018 4:18 PM
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