Parameters 165
Sub (ref1 - ref2) The subtraction ([22.11 Ext1 speed ref1] - [22.12 Ext1
speed ref2]) of the reference sources is used as speed
reference 1.
2
Mul (ref1 × ref2) The multiplication of the reference sources is used as
speed reference 1.
3
Min (ref1, ref2) The smaller of the reference sources is used as speed
reference 1.
4
Max (ref1, ref2) The greater of the reference sources is used as speed
reference 1.
5
22.21 Constant speed
function
Determines how constant speeds are selected, and
whether the rotation direction signal is considered or not
when applying a constant speed.
0b0001
0b0000...ob1111 Constant speed configuration word. 1 = 1
No. Name/Value Description Default
FbEq 16
Bit Name Information
0 Constant speed
mode
1 = Packed: 7 constant speeds are selectable using the three sources
defined by parameters 22.22, 22.23 and 22.24.
0 = Separate: Constant speeds 1, 2 and 3 are separately activated by
the sources defined by parameters 22.22, 22.23 and 22.24 respectively.
In case of conflict, the constant speed with the smaller number takes
priority.
1 Direction
enable
1 = Start dir: To determine running direction for a constant speed, the
sign of the constant speed setting (parameters 22.26…22.32) is
multiplied by the direction signal (forward: +1, reverse: -1). This
effectively allows the drive to have 14 (7 forward, 7 reverse) constant
speeds if all values in 22.26…22.32 are positive.
WARNING! If the direction signal is reverse and the active
constant speed 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 Speed step 1 = Speed step enable; 0 = Speed step disable
3…15 Reserved
ACS180 FW.book Page 165 Tuesday, March 9, 2021 2:25 PM
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